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| Time UTC | DSCOVR | ACE | ||||
|---|---|---|---|---|---|---|
| Solar Wind | GSM | Solar Wind | GSM | |||
| Proton Density | Bulk Speed | Bz | Proton Density | Bulk Speed | Bz | |
| 01:33 | - | - | - | - | - | - |
| 01:32 | - | - | - | - | - | - |
| 01:31 | 3.50 | 965.0 | - | - | - | - |
| 01:30 | 3.93 | 968.7 | - | - | - | - |
| 01:29 | 3.60 | 968.0 | -2.11 | - | - | - |
| 01:28 | 3.54 | 975.7 | -1.17 | - | - | - |
| 01:27 | 3.34 | 967.4 | -1.12 | - | - | -1.1 |
| 01:26 | 3.51 | 968.9 | -1.13 | 3.5 | 968.9 | -1.1 |
| 01:25 | 3.63 | 972.0 | -1.39 | 3.6 | 972.0 | -1.4 |
| 01:24 | 4.03 | 975.5 | -2.19 | 4.0 | 975.5 | -2.2 |
| 01:23 | 4.01 | 975.6 | -2.51 | 4.0 | 975.6 | -2.5 |
| 01:22 | 4.42 | 979.7 | -2.31 | 4.4 | 979.7 | -2.3 |
| 01:21 | 4.87 | 978.6 | -3.19 | 4.9 | 978.6 | -3.2 |
| 01:20 | 5.16 | 976.5 | -2.83 | 5.2 | 976.5 | -2.8 |
| 01:19 | 5.25 | 978.4 | -2.97 | 5.2 | 978.4 | -3.0 |
| 01:18 | 4.71 | 974.9 | -2.43 | 4.7 | 974.9 | -2.4 |
| 01:17 | 4.62 | 974.0 | -3.62 | 4.6 | 974.0 | -3.6 |
| 01:16 | 3.67 | 962.3 | -3.18 | 3.7 | 962.3 | -3.2 |
| 01:15 | 2.85 | 968.2 | -2.79 | 2.9 | 968.2 | -2.8 |
| 01:14 | 2.98 | 967.7 | -2.85 | 3.0 | 967.7 | -2.8 |
| 01:13 | 2.72 | 969.2 | -2.46 | 2.7 | 969.2 | -2.5 |
| 01:12 | 2.07 | 967.6 | -2.56 | 2.1 | 967.6 | -2.6 |
| 01:11 | 4.10 | 988.0 | -3.31 | 4.1 | 988.0 | -3.3 |
| 01:10 | 3.99 | 983.7 | -4.36 | 4.0 | 983.7 | -4.4 |
| 01:09 | 4.10 | 987.8 | -4.61 | 4.1 | 987.8 | -4.6 |
| 01:08 | 3.73 | 980.1 | -5.10 | 3.7 | 980.1 | -5.1 |
| 01:07 | 3.81 | 981.8 | -5.08 | 3.8 | 981.8 | -5.1 |
| 01:06 | 4.47 | 977.6 | -5.58 | 4.5 | 977.6 | -5.6 |
| 01:05 | 4.38 | 974.4 | -5.23 | 4.4 | 974.4 | -5.2 |
| 01:04 | 3.87 | 978.0 | -5.74 | 3.9 | 978.0 | -5.7 |
| 01:03 | 4.35 | 953.3 | -5.45 | 4.3 | 953.3 | -5.4 |
| 01:02 | 4.04 | 961.4 | -3.64 | 4.0 | 961.4 | -3.6 |
| 01:01 | 3.02 | 984.7 | -1.68 | 3.0 | 984.7 | -1.7 |
| 01:00 | 2.01 | 995.8 | -5.21 | 2.0 | 995.8 | -5.2 |
| 00:59 | 1.34 | 998.7 | -5.53 | 1.3 | 998.7 | -5.5 |
| 00:58 | 1.55 | 994.2 | -5.38 | 1.6 | 994.2 | -5.4 |
| 00:57 | 1.49 | 992.0 | -5.55 | 1.5 | 992.0 | -5.5 |
| 00:56 | 1.84 | 992.6 | -5.92 | 1.8 | 992.6 | -5.9 |
| 00:55 | 1.65 | 1005.0 | -5.47 | 1.7 | 1005.0 | -5.5 |
| 00:54 | 1.75 | 989.9 | -5.95 | 1.7 | 989.9 | -6.0 |
| 00:53 | 1.96 | 990.5 | -6.08 | 2.0 | 990.5 | -6.1 |
| 00:52 | 1.97 | 988.5 | -5.53 | 2.0 | 988.5 | -5.5 |
| 00:51 | 2.16 | 988.6 | -5.61 | 2.2 | 988.6 | -5.6 |
| 00:50 | 2.19 | 986.3 | -5.69 | 2.2 | 986.3 | -5.7 |
| 00:49 | 2.27 | 989.2 | -5.61 | 2.3 | 989.2 | -5.6 |
| 00:48 | 2.19 | 992.2 | -5.71 | 2.2 | 992.2 | -5.7 |
| 00:47 | 1.64 | 986.2 | -5.83 | 1.6 | 986.2 | -5.8 |
| 00:46 | 1.39 | 982.8 | -5.91 | 1.4 | 982.8 | -5.9 |
| 00:45 | 1.72 | 983.7 | -5.77 | 1.7 | 983.7 | -5.8 |
| 00:44 | 2.01 | 988.4 | -4.88 | 2.0 | 988.4 | -4.9 |
| 00:43 | 2.12 | 989.1 | -5.37 | 2.1 | 989.1 | -5.4 |
| 00:42 | 1.69 | 990.1 | -5.48 | 1.7 | 990.1 | -5.5 |
| 00:41 | 1.60 | 983.7 | -5.53 | 1.6 | 983.7 | -5.5 |
| 00:40 | 1.35 | 978.4 | -5.20 | 1.3 | 978.4 | -5.2 |
| 00:39 | 0.97 | 980.9 | -5.49 | 1.0 | 980.9 | -5.5 |
| 00:38 | 1.07 | 987.8 | -4.27 | 1.1 | 987.8 | -4.3 |
| 00:37 | 1.09 | 973.5 | -5.13 | 1.1 | 973.5 | -5.1 |
| 00:36 | 1.17 | 981.1 | -5.50 | 1.2 | 981.1 | -5.5 |
| 00:35 | 1.26 | 983.2 | -5.06 | 1.3 | 983.2 | -5.1 |
| 00:34 | 1.19 | 984.7 | -5.01 | 1.2 | 984.7 | -5.0 |
| 00:33 | 0.97 | 984.5 | -4.95 | 1.0 | 984.5 | -5.0 |
| 00:32 | 0.89 | 978.0 | -4.63 | 0.9 | 978.0 | -4.6 |
| 00:31 | 0.96 | 974.1 | -4.38 | 1.0 | 974.1 | -4.4 |
| 00:30 | 0.88 | 975.0 | -4.01 | 0.9 | 975.0 | -4.0 |
| 00:29 | 1.03 | 977.1 | -3.75 | 1.0 | 977.1 | -3.7 |
| 00:28 | 1.58 | 984.3 | -4.53 | 1.6 | 984.3 | -4.5 |
| 00:27 | 1.68 | 981.3 | -4.19 | 1.7 | 981.3 | -4.2 |
| 00:26 | 1.39 | 967.1 | -2.56 | 1.4 | 967.1 | -2.6 |
| 00:25 | 1.83 | 972.7 | -3.67 | 1.8 | 972.7 | -3.7 |
| 00:24 | 1.93 | 970.3 | -5.17 | 1.9 | 970.3 | -5.2 |
| 00:23 | 1.63 | 916.3 | 1.24 | 1.6 | 916.3 | 1.2 |
| 00:22 | 1.92 | 948.7 | 0.06 | 1.9 | 948.7 | 0.1 |
| 00:21 | 1.56 | 943.2 | -3.80 | 1.6 | 943.2 | -3.8 |
| 00:20 | 1.37 | 944.2 | -3.00 | 1.4 | 944.2 | -3.0 |
| 00:19 | 1.53 | 940.0 | -2.17 | 1.5 | 940.0 | -2.2 |
| 00:18 | 1.70 | 940.9 | -1.29 | 1.7 | 940.9 | -1.3 |
| 00:17 | 1.89 | 941.3 | -0.32 | 1.9 | 941.3 | -0.3 |
| 00:16 | 1.55 | 931.6 | 0.80 | 1.6 | 931.6 | 0.8 |
| 00:15 | 1.04 | 927.6 | -2.87 | 1.0 | 927.6 | -2.9 |
| 00:14 | 1.35 | 933.0 | -4.21 | 1.4 | 933.0 | -4.2 |
| 00:13 | 1.37 | 929.5 | -2.95 | 1.4 | 929.5 | -2.9 |
| 00:12 | 1.52 | 929.8 | -2.28 | 1.5 | 929.8 | -2.3 |
| 00:11 | 1.31 | 908.1 | -0.32 | 1.3 | 908.1 | -0.3 |
| 00:10 | 1.34 | 916.0 | 0.66 | 1.3 | 916.0 | 0.7 |
| 00:09 | 1.20 | 925.3 | 1.41 | 1.2 | 925.3 | 1.4 |
| 00:08 | 1.26 | 912.5 | 1.80 | 1.3 | 912.5 | 1.8 |
| 00:07 | 1.31 | 918.8 | 0.08 | 1.3 | 918.8 | 0.1 |
| 00:06 | 1.47 | 915.7 | -0.96 | 1.5 | 915.7 | -1.0 |
| 00:05 | 1.36 | 921.4 | -1.14 | 1.4 | 921.4 | -1.1 |
| 00:04 | 1.45 | 914.6 | -1.24 | 1.4 | 914.6 | -1.2 |
| 00:03 | 1.45 | 905.0 | 0.72 | 1.5 | 905.0 | 0.7 |
| 00:02 | 1.38 | 904.2 | 0.16 | 1.4 | 904.2 | 0.2 |
| 00:01 | 1.32 | 908.6 | 0.82 | 1.3 | 908.6 | 0.8 |
| 00:00 | 1.36 | 913.3 | 0.96 | 1.4 | 913.3 | 1.0 |
| 23:59 | 1.31 | 922.5 | -0.85 | 1.3 | 922.5 | -0.8 |
| 23:58 | 1.08 | 933.4 | -2.47 | 1.1 | 933.4 | -2.5 |
| 23:57 | 1.37 | 931.1 | -2.81 | 1.4 | 931.1 | -2.8 |
| 23:56 | 1.32 | 929.1 | -2.40 | 1.3 | 929.1 | -2.4 |
| 23:55 | 1.09 | 919.1 | -4.28 | 1.1 | 919.1 | -4.3 |
| 23:54 | 1.28 | 933.0 | -2.28 | 1.3 | 933.0 | -2.3 |
| 23:53 | 1.03 | 930.8 | -1.96 | 1.0 | 930.8 | -2.0 |
| 23:52 | 1.35 | 924.1 | -1.25 | 1.3 | 924.1 | -1.3 |
| 23:51 | 1.12 | 925.7 | -3.27 | 1.1 | 925.7 | -3.3 |
| 23:50 | 1.83 | 879.3 | -1.45 | 1.8 | 879.3 | -1.4 |
| 23:49 | 1.31 | 886.9 | 6.29 | 1.3 | 886.9 | 6.3 |
| 23:48 | 1.20 | 899.7 | 5.01 | 1.2 | 899.7 | 5.0 |
| 23:47 | 1.09 | 907.2 | 4.40 | 1.1 | 907.2 | 4.4 |
| 23:46 | 1.09 | 910.3 | 3.93 | 1.1 | 910.3 | 3.9 |
| 23:45 | 1.11 | 911.3 | 3.16 | 1.1 | 911.3 | 3.2 |
| 23:44 | 1.30 | 913.7 | 2.61 | 1.3 | 913.7 | 2.6 |
| 23:43 | 1.49 | 917.1 | 0.60 | 1.5 | 917.1 | 0.6 |
| 23:42 | 1.24 | 919.2 | 1.34 | 1.2 | 919.2 | 1.3 |
| 23:41 | 1.41 | 923.2 | 1.67 | 1.4 | 923.2 | 1.7 |
| 23:40 | 1.20 | 941.7 | 1.53 | 1.2 | 941.7 | 1.5 |
| 23:39 | 1.16 | 948.6 | 0.60 | 1.2 | 948.6 | 0.6 |
| 23:38 | 0.81 | 950.3 | -0.15 | 0.8 | 950.3 | -0.1 |
| 23:37 | 1.51 | 949.3 | -1.08 | 1.5 | 949.3 | -1.1 |
| 23:36 | 1.58 | 944.8 | 0.38 | 1.6 | 944.8 | 0.4 |
| 23:35 | 1.19 | 928.3 | 1.43 | 1.2 | 928.3 | 1.4 |
| 23:34 | 1.19 | 941.8 | -0.30 | 1.2 | 941.8 | -0.3 |
Built 2024-05-12 01:34 from source
| Solar wind parameters of the latest hour by NOAA | |||
|---|---|---|---|
| parameter | min | max | mean |
| IMF Bz [nT] | -6.1 | -1.1 | -4.4 |
| velocity [km/s] | 953.3 | 1005.0 | 981.2 |
| density [cm-3] | 0.9 | 5.2 | 2.6 |
| Geomagnetic activity (RX [nT]) | ||
|---|---|---|
| site | latest hour | next hour (RXmin, RXmax) |
| Kevo (KEV) | 997 | 161 | 410 |
| Maasi (MAS) | 993 | 84 | 435 |
| Kilpisjärvi (KIL) | 1012 | 140 | 387 |
| Ivalo (IVA) | 1146 | 222 | 603 |
| Muonio (MUO) | 1193 | 44 | 558 |
| Sodankylä (SOD) | 1038 | 177 | 641 |
| Pello (PEL) | 1115 | 146 | 620 |
| Oulujärvi (OUJ) | 602 | 69 | 381 |
| Mekrijärvi (MEK) | 326 | 16 | 103 |
| Hankasalmi (HAN) | 282 | 26 | 174 |
| Nurmijärvi (NUR) | 172 | 23 | 94 |
| Tartu (TAR) | 65 | 13 | 42 |
| low | increased | moderate | high | very high |
Short explanation of the method
AurorasNow! (Finnish Meteorological Institute)Built 2024-05-12 01:32 from source
Issue Time: 2024-05-12 01:17 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024-05-12 01:10 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024-05-12 01:10 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
Issue Time: 2024-05-11 21:44 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024-05-11 21:44 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024-05-11 21:44 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
Issue Time: 2024-05-11 21:16 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024-05-11 21:16 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024-05-11 21:16 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
Issue Time: 2024-05-11 21:14 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024-05-11 21:11 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024-05-11 21:11 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
Issue Time: 2024-05-11 19:42 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024-05-11 19:37 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024-05-11 19:37 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
Issue Time: 2024-05-11 18:31 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024-05-11 18:28 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024-05-11 18:28 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
Issue Time: 2024-05-11 18:25 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024-05-11 18:21 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024-05-11 18:21 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
Issue Time: 2024-05-11 18:03 UTC
ALERT: Type IV Radio Emission
Begin Time: 2024-05-11 17:06 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
ALERT: Type IV Radio Emission
Begin Time: 2024-05-11 17:06 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
Issue Time: 2024-05-11 17:53 UTC
WATCH: Geomagnetic Storm Category G4 or Greater Predicted
Highest Storm Level Predicted by Day
May 12: G5 (Extreme) May 13: G3 (Strong) May 14: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
WATCH: Geomagnetic Storm Category G4 or Greater Predicted
Highest Storm Level Predicted by Day
May 12: G5 (Extreme) May 13: G3 (Strong) May 14: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
Issue Time: 2024-05-11 17:53 UTC
EXTENDED WARNING: Geomagnetic K-index of 7 or greater expected
Extension to Serial Number: 105
Valid From: 2024-05-10 17:15 UTC
Now Valid Until: 2024-05-12 23:59 UTC
Warning Condition: Persistence
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
EXTENDED WARNING: Geomagnetic K-index of 7 or greater expected
Extension to Serial Number: 105
Valid From: 2024-05-10 17:15 UTC
Now Valid Until: 2024-05-12 23:59 UTC
Warning Condition: Persistence
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
Issue Time: 2024-05-11 17:53 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1876
Valid From: 2024-05-10 17:00 UTC
Now Valid Until: 2024-05-13 15:00 UTC
Warning Condition: Persistence
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1876
Valid From: 2024-05-10 17:00 UTC
Now Valid Until: 2024-05-13 15:00 UTC
Warning Condition: Persistence
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
Issue Time: 2024-05-11 17:53 UTC
EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 521
Valid From: 2024-05-10 17:14 UTC
Now Valid Until: 2024-05-13 12:00 UTC
Warning Condition: Persistence
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 521
Valid From: 2024-05-10 17:14 UTC
Now Valid Until: 2024-05-13 12:00 UTC
Warning Condition: Persistence
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
Issue Time: 2024-05-11 16:58 UTC
SUMMARY: X-ray Event exceeded M5
Begin Time: 2024-05-11 14:46 UTC
Maximum Time: 2024-05-11 15:25 UTC
End Time: 2024-05-11 15:52 UTC
X-ray Class: M8.8
Optical Class: 2b
Location: S19W56
NOAA Scale: R2 - Moderate
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.
SUMMARY: X-ray Event exceeded M5
Begin Time: 2024-05-11 14:46 UTC
Maximum Time: 2024-05-11 15:25 UTC
End Time: 2024-05-11 15:52 UTC
X-ray Class: M8.8
Optical Class: 2b
Location: S19W56
NOAA Scale: R2 - Moderate
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.
Issue Time: 2024-05-11 16:50 UTC
ALERT: Geomagnetic K-index of 8, 9-
Threshold Reached: 2024-05-11 16:47 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
ALERT: Geomagnetic K-index of 8, 9-
Threshold Reached: 2024-05-11 16:47 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
Issue Time: 2024-05-11 15:48 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024-05-11 15:45 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024-05-11 15:45 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
Issue Time: 2024-05-11 15:22 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024-05-11 15:20 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024-05-11 15:20 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
Issue Time: 2024-05-11 15:15 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024-05-11 15:11 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024-05-11 15:11 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
Issue Time: 2024-05-11 12:40 UTC
ALERT: Geomagnetic K-index of 8, 9-
Threshold Reached: 2024-05-11 12:37 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
ALERT: Geomagnetic K-index of 8, 9-
Threshold Reached: 2024-05-11 12:37 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
Issue Time: 2024-05-11 12:36 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024-05-11 12:28 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024-05-11 12:28 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
Issue Time: 2024-05-11 12:30 UTC
SUMMARY: X-ray Event exceeded X1
Begin Time: 2024-05-11 11:15 UTC
Maximum Time: 2024-05-11 11:44 UTC
End Time: 2024-05-11 12:05 UTC
X-ray Class: X1.5
Optical Class: 2b
Location: S22W44
NOAA Scale: R3 - Strong
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
SUMMARY: X-ray Event exceeded X1
Begin Time: 2024-05-11 11:15 UTC
Maximum Time: 2024-05-11 11:44 UTC
End Time: 2024-05-11 12:05 UTC
X-ray Class: X1.5
Optical Class: 2b
Location: S22W44
NOAA Scale: R3 - Strong
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
Issue Time: 2024-05-11 12:21 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024-05-11 12:12 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024-05-11 12:12 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
Issue Time: 2024-05-11 12:15 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024-05-11 12:06 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024-05-11 12:06 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
Issue Time: 2024-05-11 11:39 UTC
ALERT: Geomagnetic K-index of 9o
Threshold Reached: 2024-05-11 11:28 UTC
Synoptic Period: 0900-1200 UTC
Active Warning: Yes
NOAA Scale: G5 - Extreme
Induced Currents - Widespread voltage control problems and protective system problems may occur; some power grid systems may experience component failures or protective device trips resulting in blackouts or disruption of service. Pipeline currents can reach hundreds of amps.
Spacecraft - Systems may experience anomalies to include: extensive surface charging, unexpected orientation and attitude changes, uplink/downlink errors, and satellite orbit degradation.
Navigation - Satellite navigation (GPS) may be degraded or unavailable for days.
Radio - HF (high frequency) radio propagation may be impossible in many areas for one to two days.
Aurora - Aurora may be seen as low as Florida to southern Texas and southern California.
ALERT: Geomagnetic K-index of 9o
Threshold Reached: 2024-05-11 11:28 UTC
Synoptic Period: 0900-1200 UTC
Active Warning: Yes
NOAA Scale: G5 - Extreme
Induced Currents - Widespread voltage control problems and protective system problems may occur; some power grid systems may experience component failures or protective device trips resulting in blackouts or disruption of service. Pipeline currents can reach hundreds of amps.
Spacecraft - Systems may experience anomalies to include: extensive surface charging, unexpected orientation and attitude changes, uplink/downlink errors, and satellite orbit degradation.
Navigation - Satellite navigation (GPS) may be degraded or unavailable for days.
Radio - HF (high frequency) radio propagation may be impossible in many areas for one to two days.
Aurora - Aurora may be seen as low as Florida to southern Texas and southern California.
Issue Time: 2024-05-11 11:38 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024-05-11 11:31 UTC
NOAA Scale: R2 - Moderate
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024-05-11 11:31 UTC
NOAA Scale: R2 - Moderate
Issue Time: 2024-05-11 11:20 UTC
EXTENDED WARNING: Proton 100MeV Integral Flux above 1pfu expected
Extension to Serial Number: 101
Valid From: 2024-05-11 02:05 UTC
Now Valid Until: 2024-05-12 12:00 UTC
Warning Condition: Persistence
EXTENDED WARNING: Proton 100MeV Integral Flux above 1pfu expected
Extension to Serial Number: 101
Valid From: 2024-05-11 02:05 UTC
Now Valid Until: 2024-05-12 12:00 UTC
Warning Condition: Persistence
Issue Time: 2024-05-11 11:20 UTC
EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 556
Valid From: 2024-05-10 13:05 UTC
Now Valid Until: 2024-05-12 23:59 UTC
Warning Condition: Persistence
Predicted NOAA Scale: S1 - Minor
EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 556
Valid From: 2024-05-10 13:05 UTC
Now Valid Until: 2024-05-12 23:59 UTC
Warning Condition: Persistence
Predicted NOAA Scale: S1 - Minor
Issue Time: 2024-05-11 11:20 UTC
EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 520
Valid From: 2024-05-10 17:14 UTC
Now Valid Until: 2024-05-12 09:00 UTC
Warning Condition: Persistence
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 520
Valid From: 2024-05-10 17:14 UTC
Now Valid Until: 2024-05-12 09:00 UTC
Warning Condition: Persistence
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
Issue Time: 2024-05-11 11:20 UTC
EXTENDED WARNING: Geomagnetic K-index of 7 or greater expected
Extension to Serial Number: 104
Valid From: 2024-05-10 17:15 UTC
Now Valid Until: 2024-05-11 23:59 UTC
Warning Condition: Persistence
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
EXTENDED WARNING: Geomagnetic K-index of 7 or greater expected
Extension to Serial Number: 104
Valid From: 2024-05-10 17:15 UTC
Now Valid Until: 2024-05-11 23:59 UTC
Warning Condition: Persistence
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
Issue Time: 2024-05-11 11:20 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1875
Valid From: 2024-05-10 17:00 UTC
Now Valid Until: 2024-05-12 15:00 UTC
Warning Condition: Persistence
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1875
Valid From: 2024-05-10 17:00 UTC
Now Valid Until: 2024-05-12 15:00 UTC
Warning Condition: Persistence
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
Issue Time: 2024-05-11 11:20 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4606
Valid From: 2024-05-10 17:00 UTC
Now Valid Until: 2024-05-13 23:59 UTC
Warning Condition: Persistence
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4606
Valid From: 2024-05-10 17:00 UTC
Now Valid Until: 2024-05-13 23:59 UTC
Warning Condition: Persistence
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
Issue Time: 2024-05-11 11:20 UTC
WATCH: Geomagnetic Storm Category G3 Predicted
Highest Storm Level Predicted by Day
May 11: G4 (Severe) May 12: G3 (Strong) May 13: G3 (Strong)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
WATCH: Geomagnetic Storm Category G3 Predicted
Highest Storm Level Predicted by Day
May 11: G4 (Severe) May 12: G3 (Strong) May 13: G3 (Strong)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
Issue Time: 2024-05-11 11:13 UTC
EXTENDED WARNING: Proton 100MeV Integral Flux above 1pfu expected
Extension to Serial Number: 100
Valid From: 2024-05-11 02:05 UTC
Now Valid Until: 2024-05-12 12:00 UTC
Warning Condition: Persistence
EXTENDED WARNING: Proton 100MeV Integral Flux above 1pfu expected
Extension to Serial Number: 100
Valid From: 2024-05-11 02:05 UTC
Now Valid Until: 2024-05-12 12:00 UTC
Warning Condition: Persistence
Issue Time: 2024-05-11 09:44 UTC
ALERT: Geomagnetic K-index of 8, 9-
Threshold Reached: 2024-05-11 09:40 UTC
Synoptic Period: 0900-1200 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
ALERT: Geomagnetic K-index of 8, 9-
Threshold Reached: 2024-05-11 09:40 UTC
Synoptic Period: 0900-1200 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
Issue Time: 2024-05-11 09:41 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024-05-11 09:37 UTC
Synoptic Period: 0900-1200 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024-05-11 09:37 UTC
Synoptic Period: 0900-1200 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
Issue Time: 2024-05-11 09:28 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024-05-11 09:26 UTC
Synoptic Period: 0900-1200 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024-05-11 09:26 UTC
Synoptic Period: 0900-1200 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
Issue Time: 2024-05-11 09:16 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024-05-11 09:08 UTC
Synoptic Period: 0900-1200 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024-05-11 09:08 UTC
Synoptic Period: 0900-1200 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
Issue Time: 2024-05-11 07:09 UTC
ALERT: Geomagnetic K-index of 8, 9-
Threshold Reached: 2024-05-11 07:03 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
ALERT: Geomagnetic K-index of 8, 9-
Threshold Reached: 2024-05-11 07:03 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
Issue Time: 2024-05-11 06:49 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024-05-11 06:44 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024-05-11 06:44 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
Issue Time: 2024-05-11 06:33 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024-05-11 06:26 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024-05-11 06:26 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
Issue Time: 2024-05-11 06:19 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024-05-11 06:15 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024-05-11 06:15 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
Issue Time: 2024-05-11 05:19 UTC
ALERT: Type IV Radio Emission
Begin Time: 2024-05-11 04:20 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
ALERT: Type IV Radio Emission
Begin Time: 2024-05-11 04:20 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
Issue Time: 2024-05-11 03:38 UTC
ALERT: Geomagnetic K-index of 8, 9-
Threshold Reached: 2024-05-11 03:27 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
ALERT: Geomagnetic K-index of 8, 9-
Threshold Reached: 2024-05-11 03:27 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
Issue Time: 2024-05-11 03:22 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024-05-11 03:14 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024-05-11 03:14 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
Issue Time: 2024-05-11 03:16 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024-05-11 03:08 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024-05-11 03:08 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
Issue Time: 2024-05-11 03:12 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024-05-10 03:03 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024-05-10 03:03 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
Issue Time: 2024-05-11 02:46 UTC
ALERT: Geomagnetic K-index of 9o
Threshold Reached: 2024-05-11 02:40 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G5 - Extreme
Induced Currents - Widespread voltage control problems and protective system problems may occur; some power grid systems may experience component failures or protective device trips resulting in blackouts or disruption of service. Pipeline currents can reach hundreds of amps.
Spacecraft - Systems may experience anomalies to include: extensive surface charging, unexpected orientation and attitude changes, uplink/downlink errors, and satellite orbit degradation.
Navigation - Satellite navigation (GPS) may be degraded or unavailable for days.
Radio - HF (high frequency) radio propagation may be impossible in many areas for one to two days.
Aurora - Aurora may be seen as low as Florida to southern Texas and southern California.
ALERT: Geomagnetic K-index of 9o
Threshold Reached: 2024-05-11 02:40 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G5 - Extreme
Induced Currents - Widespread voltage control problems and protective system problems may occur; some power grid systems may experience component failures or protective device trips resulting in blackouts or disruption of service. Pipeline currents can reach hundreds of amps.
Spacecraft - Systems may experience anomalies to include: extensive surface charging, unexpected orientation and attitude changes, uplink/downlink errors, and satellite orbit degradation.
Navigation - Satellite navigation (GPS) may be degraded or unavailable for days.
Radio - HF (high frequency) radio propagation may be impossible in many areas for one to two days.
Aurora - Aurora may be seen as low as Florida to southern Texas and southern California.
Issue Time: 2024-05-11 02:27 UTC
ALERT: Proton Event 100MeV Integral Flux exceeded 1pfu
Begin Time: 2024-05-11 02:10 UTC
ALERT: Proton Event 100MeV Integral Flux exceeded 1pfu
Begin Time: 2024-05-11 02:10 UTC
Issue Time: 2024-05-11 02:06 UTC
WARNING: Proton 100MeV Integral Flux above 1pfu expected
Valid From: 2024-05-11 02:05 UTC
Valid To: 2024-05-11 12:00 UTC
Warning Condition: Onset
WARNING: Proton 100MeV Integral Flux above 1pfu expected
Valid From: 2024-05-11 02:05 UTC
Valid To: 2024-05-11 12:00 UTC
Warning Condition: Onset
Issue Time: 2024-05-11 02:02 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2024-05-11 01:14 UTC
Maximum Time: 2024-05-11 01:24 UTC
End Time: 2024-05-11 01:37 UTC
Duration: 23 minutes
Peak Flux: 800 sfu
Latest Penticton Noon Flux: 223 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
SUMMARY: 10cm Radio Burst
Begin Time: 2024-05-11 01:14 UTC
Maximum Time: 2024-05-11 01:24 UTC
End Time: 2024-05-11 01:37 UTC
Duration: 23 minutes
Peak Flux: 800 sfu
Latest Penticton Noon Flux: 223 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
Issue Time: 2024-05-11 01:52 UTC
ALERT: Type II Radio Emission
Begin Time: 2024-05-11 01:13 UTC
Estimated Velocity: 564 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
ALERT: Type II Radio Emission
Begin Time: 2024-05-11 01:13 UTC
Estimated Velocity: 564 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
Issue Time: 2024-05-11 01:44 UTC
SUMMARY: X-ray Event exceeded X1
Begin Time: 2024-05-11 01:10 UTC
Maximum Time: 2024-05-11 01:23 UTC
End Time: 2024-05-11 01:39 UTC
X-ray Class: X5.8
Optical Class: 2b
Location: S19W45
NOAA Scale: R3 - Strong
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
SUMMARY: X-ray Event exceeded X1
Begin Time: 2024-05-11 01:10 UTC
Maximum Time: 2024-05-11 01:23 UTC
End Time: 2024-05-11 01:39 UTC
X-ray Class: X5.8
Optical Class: 2b
Location: S19W45
NOAA Scale: R3 - Strong
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
Issue Time: 2024-05-11 01:34 UTC
ALERT: Type IV Radio Emission
Begin Time: 2024-05-11 01:24 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
ALERT: Type IV Radio Emission
Begin Time: 2024-05-11 01:24 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
Issue Time: 2024-05-11 01:20 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024-05-11 01:15 UTC
NOAA Scale: R2 - Moderate
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024-05-11 01:15 UTC
NOAA Scale: R2 - Moderate
Issue Time: 2024-05-11 01:02 UTC
ALERT: Geomagnetic K-index of 8, 9-
Threshold Reached: 2024-05-11 00:53 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
ALERT: Geomagnetic K-index of 8, 9-
Threshold Reached: 2024-05-11 00:53 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
Issue Time: 2024-05-11 00:36 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024-05-11 00:36 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024-05-11 00:36 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
Issue Time: 2024-05-11 00:31 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024-05-10 00:20 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024-05-10 00:20 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
Issue Time: 2024-05-11 00:21 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024-05-11 00:20 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024-05-11 00:20 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
Issue Time: 2024-05-10 23:57 UTC
EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 519
Valid From: 2024-05-10 17:14 UTC
Now Valid Until: 2024-05-11 18:00 UTC
Warning Condition: Onset
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 519
Valid From: 2024-05-10 17:14 UTC
Now Valid Until: 2024-05-11 18:00 UTC
Warning Condition: Onset
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
Issue Time: 2024-05-10 23:57 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1874
Valid From: 2024-05-10 17:00 UTC
Now Valid Until: 2024-05-11 21:00 UTC
Warning Condition: Persistence
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1874
Valid From: 2024-05-10 17:00 UTC
Now Valid Until: 2024-05-11 21:00 UTC
Warning Condition: Persistence
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
Issue Time: 2024-05-10 23:57 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4605
Valid From: 2024-05-10 17:00 UTC
Now Valid Until: 2024-05-12 00:00 UTC
Warning Condition: Persistence
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4605
Valid From: 2024-05-10 17:00 UTC
Now Valid Until: 2024-05-12 00:00 UTC
Warning Condition: Persistence
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
Issue Time: 2024-05-10 23:48 UTC
EXTENDED WARNING: Geomagnetic K-index of 7 or greater expected
Extension to Serial Number: 103
Valid From: 2024-05-10 17:15 UTC
Now Valid Until: 2024-05-11 12:00 UTC
Warning Condition: Persistence
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
EXTENDED WARNING: Geomagnetic K-index of 7 or greater expected
Extension to Serial Number: 103
Valid From: 2024-05-10 17:15 UTC
Now Valid Until: 2024-05-11 12:00 UTC
Warning Condition: Persistence
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
Issue Time: 2024-05-10 23:34 UTC
ALERT: Geomagnetic K-index of 9o
Threshold Reached: 2024-05-10 22:54 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G5 - Extreme
Induced Currents - Widespread voltage control problems and protective system problems may occur; some power grid systems may experience component failures or protective device trips resulting in blackouts or disruption of service. Pipeline currents can reach hundreds of amps.
Spacecraft - Systems may experience anomalies to include: extensive surface charging, unexpected orientation and attitude changes, uplink/downlink errors, and satellite orbit degradation.
Navigation - Satellite navigation (GPS) may be degraded or unavailable for days.
Radio - HF (high frequency) radio propagation may be impossible in many areas for one to two days.
Aurora - Aurora may be seen as low as Florida to southern Texas and southern California.
ALERT: Geomagnetic K-index of 9o
Threshold Reached: 2024-05-10 22:54 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G5 - Extreme
Induced Currents - Widespread voltage control problems and protective system problems may occur; some power grid systems may experience component failures or protective device trips resulting in blackouts or disruption of service. Pipeline currents can reach hundreds of amps.
Spacecraft - Systems may experience anomalies to include: extensive surface charging, unexpected orientation and attitude changes, uplink/downlink errors, and satellite orbit degradation.
Navigation - Satellite navigation (GPS) may be degraded or unavailable for days.
Radio - HF (high frequency) radio propagation may be impossible in many areas for one to two days.
Aurora - Aurora may be seen as low as Florida to southern Texas and southern California.
Issue Time: 2024-05-10 23:30 UTC
EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 555
Valid From: 2024-05-10 13:05 UTC
Now Valid Until: 2024-05-11 12:00 UTC
Warning Condition: Persistence
Predicted NOAA Scale: S1 - Minor
EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 555
Valid From: 2024-05-10 13:05 UTC
Now Valid Until: 2024-05-11 12:00 UTC
Warning Condition: Persistence
Predicted NOAA Scale: S1 - Minor
Issue Time: 2024-05-10 21:45 UTC
ALERT: Geomagnetic K-index of 8, 9-
Threshold Reached: 2024-05-10 21:39 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
ALERT: Geomagnetic K-index of 8, 9-
Threshold Reached: 2024-05-10 21:39 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
Issue Time: 2024-05-10 21:26 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024-05-10 21:22 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024-05-10 21:22 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
Issue Time: 2024-05-10 21:15 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024-05-10 21:10 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024-05-10 21:10 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
Issue Time: 2024-05-10 21:15 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024-05-10 21:10 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024-05-10 21:10 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
Issue Time: 2024-05-10 19:04 UTC
ALERT: Geomagnetic K-index of 8, 9-
Threshold Reached: 2024-05-10 19:01 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
ALERT: Geomagnetic K-index of 8, 9-
Threshold Reached: 2024-05-10 19:01 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
Issue Time: 2024-05-10 18:31 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024-05-10 18:29 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024-05-10 18:29 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
Issue Time: 2024-05-10 18:22 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024-05-10 18:19 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024-05-10 18:19 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
Issue Time: 2024-05-10 18:14 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024-05-10 18:09 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024-05-10 18:09 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
Issue Time: 2024-05-10 17:54 UTC
ALERT: Proton Event 10MeV Integral Flux exceeded 100pfu
Begin Time: 2024-05-10 17:45 UTC
NOAA Scale: S2 - Moderate
Spacecraft - Infrequent single-event upsets to satellites are possible.
Radio - Small effects on polar HF (high frequency) propagation resulting in fades at lower frequencies.
ALERT: Proton Event 10MeV Integral Flux exceeded 100pfu
Begin Time: 2024-05-10 17:45 UTC
NOAA Scale: S2 - Moderate
Spacecraft - Infrequent single-event upsets to satellites are possible.
Radio - Small effects on polar HF (high frequency) propagation resulting in fades at lower frequencies.
Issue Time: 2024-05-10 17:44 UTC
ALERT: Geomagnetic K-index of 8, 9-
Threshold Reached: 2024-05-10 17:39 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
ALERT: Geomagnetic K-index of 8, 9-
Threshold Reached: 2024-05-10 17:39 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
Issue Time: 2024-05-10 17:29 UTC
SUMMARY: Geomagnetic Sudden Impulse
Observed: 2024-05-10 16:45 UTC
Deviation: 108 nT
Station: Boulder
SUMMARY: Geomagnetic Sudden Impulse
Observed: 2024-05-10 16:45 UTC
Deviation: 108 nT
Station: Boulder
Issue Time: 2024-05-10 17:18 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024-05-10 17:08 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024-05-10 17:08 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
Issue Time: 2024-05-10 17:17 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024-05-10 17:08 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024-05-10 17:08 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
Issue Time: 2024-05-10 17:16 UTC
WARNING: Geomagnetic K-index of 7 or greater expected
Valid From: 2024-05-10 17:15 UTC
Valid To: 2024-05-10 23:59 UTC
Warning Condition: Onset
NOAA Scale: G3 or greater
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
WARNING: Geomagnetic K-index of 7 or greater expected
Valid From: 2024-05-10 17:15 UTC
Valid To: 2024-05-10 23:59 UTC
Warning Condition: Onset
NOAA Scale: G3 or greater
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
Issue Time: 2024-05-10 17:15 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2024-05-10 17:14 UTC
Valid To: 2024-05-11 09:00 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2024-05-10 17:14 UTC
Valid To: 2024-05-11 09:00 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
Issue Time: 2024-05-10 17:14 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024-05-10 17:07 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024-05-10 17:07 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
Issue Time: 2024-05-10 17:11 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024-05-10 17:07 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024-05-10 17:07 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
Issue Time: 2024-05-10 16:51 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2024-05-10 17:00 UTC
Valid To: 2024-05-11 12:00 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2024-05-10 17:00 UTC
Valid To: 2024-05-11 12:00 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
Issue Time: 2024-05-10 16:50 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024-05-10 17:00 UTC
Valid To: 2024-05-11 15:00 UTC
Warning Condition: Onset
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024-05-10 17:00 UTC
Valid To: 2024-05-11 15:00 UTC
Warning Condition: Onset
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
Issue Time: 2024-05-10 16:47 UTC
WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2024-05-10 17:00 UTC
Valid To: 2024-05-10 17:30 UTC
IP Shock Passage Observed: 2024-05-10 16:39 UTC
WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2024-05-10 17:00 UTC
Valid To: 2024-05-10 17:30 UTC
IP Shock Passage Observed: 2024-05-10 16:39 UTC
Issue Time: 2024-05-10 14:11 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024-05-10 14:07 UTC
NOAA Scale: R2 - Moderate
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024-05-10 14:07 UTC
NOAA Scale: R2 - Moderate
Issue Time: 2024-05-10 13:51 UTC
ALERT: Proton Event 10MeV Integral Flux exceeded 10pfu
Begin Time: 2024-05-10 13:35 UTC
NOAA Scale: S1 - Minor
ALERT: Proton Event 10MeV Integral Flux exceeded 10pfu
Begin Time: 2024-05-10 13:35 UTC
NOAA Scale: S1 - Minor
Issue Time: 2024-05-10 13:03 UTC
WARNING: Proton 10MeV Integral Flux above 10pfu expected
Valid From: 2024-05-10 13:05 UTC
Valid To: 2024-05-10 23:59 UTC
Warning Condition: Onset
Predicted NOAA Scale: S1 - Minor
WARNING: Proton 10MeV Integral Flux above 10pfu expected
Valid From: 2024-05-10 13:05 UTC
Valid To: 2024-05-10 23:59 UTC
Warning Condition: Onset
Predicted NOAA Scale: S1 - Minor
Issue Time: 2024-05-10 07:40 UTC
SUMMARY: X-ray Event exceeded X1
Begin Time: 2024-05-10 06:27 UTC
Maximum Time: 2024-05-10 06:54 UTC
End Time: 2024-05-10 07:06 UTC
X-ray Class: X3.9
Optical Class: 3b
Location: S15W36
NOAA Scale: R3 - Strong
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
SUMMARY: X-ray Event exceeded X1
Begin Time: 2024-05-10 06:27 UTC
Maximum Time: 2024-05-10 06:54 UTC
End Time: 2024-05-10 07:06 UTC
X-ray Class: X3.9
Optical Class: 3b
Location: S15W36
NOAA Scale: R3 - Strong
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
Issue Time: 2024-05-10 07:31 UTC
ALERT: Type IV Radio Emission
Begin Time: 2024-05-10 06:51 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
ALERT: Type IV Radio Emission
Begin Time: 2024-05-10 06:51 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
Issue Time: 2024-05-10 07:30 UTC
ALERT: Type II Radio Emission
Begin Time: 2024-05-10 06:46 UTC
Estimated Velocity: 1248 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
ALERT: Type II Radio Emission
Begin Time: 2024-05-10 06:46 UTC
Estimated Velocity: 1248 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
Issue Time: 2024-05-10 07:16 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2024-05-10 06:38 UTC
Maximum Time: 2024-05-10 06:43 UTC
End Time: 2024-05-10 06:54 UTC
Duration: 16 minutes
Peak Flux: 900 sfu
Latest Penticton Noon Flux: 233 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
SUMMARY: 10cm Radio Burst
Begin Time: 2024-05-10 06:38 UTC
Maximum Time: 2024-05-10 06:43 UTC
End Time: 2024-05-10 06:54 UTC
Duration: 16 minutes
Peak Flux: 900 sfu
Latest Penticton Noon Flux: 233 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
Issue Time: 2024-05-10 06:44 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024-05-10 06:41 UTC
NOAA Scale: R2 - Moderate
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024-05-10 06:41 UTC
NOAA Scale: R2 - Moderate
Issue Time: 2024-05-09 18:10 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2024-05-09 17:31 UTC
Maximum Time: 2024-05-09 17:45 UTC
End Time: 2024-05-09 17:52 UTC
Duration: 21 minutes
Peak Flux: 300 sfu
Latest Penticton Noon Flux: 227 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
SUMMARY: 10cm Radio Burst
Begin Time: 2024-05-09 17:31 UTC
Maximum Time: 2024-05-09 17:45 UTC
End Time: 2024-05-09 17:52 UTC
Duration: 21 minutes
Peak Flux: 300 sfu
Latest Penticton Noon Flux: 227 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
Issue Time: 2024-05-09 18:09 UTC
SUMMARY: X-ray Event exceeded X1
Begin Time: 2024-05-09 17:23 UTC
Maximum Time: 2024-05-09 17:44 UTC
End Time: 2024-05-09 18:00 UTC
X-ray Class: X1.1
Location: S19W30
NOAA Scale: R3 - Strong
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
SUMMARY: X-ray Event exceeded X1
Begin Time: 2024-05-09 17:23 UTC
Maximum Time: 2024-05-09 17:44 UTC
End Time: 2024-05-09 18:00 UTC
X-ray Class: X1.1
Location: S19W30
NOAA Scale: R3 - Strong
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
Issue Time: 2024-05-09 18:01 UTC
ALERT: Type IV Radio Emission
Begin Time: 2024-05-09 17:45 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
ALERT: Type IV Radio Emission
Begin Time: 2024-05-09 17:45 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
Issue Time: 2024-05-09 17:44 UTC
ALERT: Type II Radio Emission
Begin Time: 2024-05-09 17:32 UTC
Estimated Velocity: 303 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
ALERT: Type II Radio Emission
Begin Time: 2024-05-09 17:32 UTC
Estimated Velocity: 303 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
Issue Time: 2024-05-09 17:34 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024-05-09 17:33 UTC
NOAA Scale: R2 - Moderate
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024-05-09 17:33 UTC
NOAA Scale: R2 - Moderate
Issue Time: 2024-05-09 17:22 UTC
WATCH: Geomagnetic Storm Category G4 or Greater Predicted
Highest Storm Level Predicted by Day
May 10: G1 (Minor) May 11: G4 (Severe) May 12: G2 (Moderate)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
WATCH: Geomagnetic Storm Category G4 or Greater Predicted
Highest Storm Level Predicted by Day
May 10: G1 (Minor) May 11: G4 (Severe) May 12: G2 (Moderate)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
Issue Time: 2024-05-09 12:51 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2024-05-09 08:52 UTC
Maximum Time: 2024-05-09 09:39 UTC
End Time: 2024-05-09 09:42 UTC
Duration: 50 minutes
Peak Flux: 3600 sfu
Latest Penticton Noon Flux: 227 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
SUMMARY: 10cm Radio Burst
Begin Time: 2024-05-09 08:52 UTC
Maximum Time: 2024-05-09 09:39 UTC
End Time: 2024-05-09 09:42 UTC
Duration: 50 minutes
Peak Flux: 3600 sfu
Latest Penticton Noon Flux: 227 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
Issue Time: 2024-05-09 09:52 UTC
SUMMARY: X-ray Event exceeded X1
Begin Time: 2024-05-09 08:45 UTC
Maximum Time: 2024-05-09 09:13 UTC
End Time: 2024-05-09 09:36 UTC
X-ray Class: X2.2
Optical Class: 3b
Location: S20W26
NOAA Scale: R3 - Strong
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
SUMMARY: X-ray Event exceeded X1
Begin Time: 2024-05-09 08:45 UTC
Maximum Time: 2024-05-09 09:13 UTC
End Time: 2024-05-09 09:36 UTC
X-ray Class: X2.2
Optical Class: 3b
Location: S20W26
NOAA Scale: R3 - Strong
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
Issue Time: 2024-05-09 09:36 UTC
ALERT: Type IV Radio Emission
Begin Time: 2024-05-09 09:10 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
ALERT: Type IV Radio Emission
Begin Time: 2024-05-09 09:10 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
Issue Time: 2024-05-09 09:34 UTC
ALERT: Type II Radio Emission
Begin Time: 2024-05-09 09:02 UTC
Estimated Velocity: 1004 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
ALERT: Type II Radio Emission
Begin Time: 2024-05-09 09:02 UTC
Estimated Velocity: 1004 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
Issue Time: 2024-05-09 08:55 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024-05-09 08:53 UTC
NOAA Scale: R2 - Moderate
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024-05-09 08:53 UTC
NOAA Scale: R2 - Moderate
Issue Time: 2024-05-09 08:34 UTC
WATCH: Geomagnetic Storm Category G3 Predicted
Highest Storm Level Predicted by Day
May 09: None (Below G1) May 10: G1 (Minor) May 11: G3 (Strong)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
WATCH: Geomagnetic Storm Category G3 Predicted
Highest Storm Level Predicted by Day
May 09: None (Below G1) May 10: G1 (Minor) May 11: G3 (Strong)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
Built 2024-05-12 01:19 from source
