SettingsLast update:
| Time UTC | DSCOVR | ACE | ||||
|---|---|---|---|---|---|---|
| Solar Wind | GSM | Solar Wind | GSM | |||
| Proton Density | Bulk Speed | Bz | Proton Density | Bulk Speed | Bz | |
| 04:02 | - | - | - | - | - | - |
| 04:01 | - | - | - | - | - | - |
| 04:00 | - | - | - | 0.0 | 390.8 | -0.0 |
| 03:59 | - | - | -2.43 | 0.0 | 391.1 | 0.5 |
| 03:58 | 5.09 | 406.1 | -3.15 | 0.0 | 386.4 | 0.3 |
| 03:57 | 4.85 | 405.9 | -2.55 | 0.0 | 379.8 | -0.2 |
| 03:56 | 4.68 | 404.0 | -2.43 | 0.0 | 376.1 | -0.1 |
| 03:55 | 4.77 | 400.2 | -2.81 | 0.0 | 389.7 | 0.8 |
| 03:54 | 4.78 | 398.0 | -3.21 | 0.0 | 388.4 | 0.9 |
| 03:53 | 4.95 | 398.6 | -2.74 | 0.0 | 407.5 | 0.8 |
| 03:52 | 4.77 | 394.1 | -1.15 | 0.0 | 390.1 | 0.9 |
| 03:51 | 4.62 | 393.7 | -0.13 | 0.0 | 393.0 | 0.9 |
| 03:50 | 4.71 | 396.5 | 0.65 | 0.0 | 390.2 | 0.7 |
| 03:49 | 4.34 | 394.0 | -0.50 | 0.0 | 388.6 | 1.3 |
| 03:48 | 4.18 | 394.5 | -0.53 | 0.0 | 392.4 | 1.2 |
| 03:47 | 4.12 | 395.2 | -0.27 | 0.0 | 391.5 | 1.2 |
| 03:46 | 4.08 | 395.4 | -0.11 | 0.0 | 384.4 | 1.3 |
| 03:45 | 4.09 | 395.4 | -0.01 | 0.0 | 390.6 | 1.3 |
| 03:44 | 4.23 | 394.7 | 0.11 | 0.0 | 395.2 | 1.3 |
| 03:43 | 4.31 | 395.0 | 0.14 | 0.0 | 385.9 | 1.5 |
| 03:42 | 4.50 | 395.3 | 0.27 | 0.0 | 378.2 | 2.3 |
| 03:41 | 4.57 | 395.9 | 0.54 | 0.0 | 387.6 | 3.0 |
| 03:40 | 4.72 | 396.1 | 0.74 | 0.0 | 387.6 | 2.9 |
| 03:39 | 4.71 | 394.3 | 0.63 | 0.0 | 385.0 | 2.7 |
| 03:38 | 4.70 | 394.9 | 0.62 | 0.0 | 384.8 | 2.7 |
| 03:37 | 4.28 | 396.1 | 0.51 | 0.0 | 383.3 | 2.5 |
| 03:36 | 4.25 | 396.2 | 0.55 | 0.0 | 389.4 | 2.4 |
| 03:35 | 4.12 | 396.7 | 0.74 | 0.0 | 387.1 | 2.2 |
| 03:34 | 4.04 | 396.9 | 0.76 | 0.0 | 384.1 | 2.3 |
| 03:33 | 4.04 | 396.3 | 0.77 | 0.0 | 397.7 | 2.1 |
| 03:32 | 4.06 | 396.3 | 0.80 | 0.0 | 392.5 | 2.1 |
| 03:31 | 4.05 | 396.6 | 0.87 | 0.0 | 389.7 | 2.0 |
| 03:30 | 4.08 | 396.5 | 1.09 | 0.0 | 394.2 | 1.7 |
| 03:29 | 3.97 | 397.1 | 1.22 | 0.0 | 409.0 | 1.6 |
| 03:28 | 3.96 | 397.5 | 1.12 | 0.0 | 404.4 | 1.6 |
| 03:27 | 4.15 | 403.1 | 1.40 | 0.0 | 396.1 | 1.6 |
| 03:26 | 3.94 | 398.9 | 1.47 | 0.0 | 395.8 | 1.8 |
| 03:25 | 3.84 | 399.9 | 1.39 | 0.0 | 379.1 | 1.9 |
| 03:24 | 3.88 | 399.6 | 1.54 | 0.0 | 387.8 | 2.1 |
| 03:23 | 3.99 | 398.7 | 1.71 | 0.0 | 400.0 | 2.2 |
| 03:22 | 3.89 | 400.0 | 1.46 | 0.0 | 392.1 | 2.2 |
| 03:21 | 3.73 | 399.7 | 1.62 | 0.0 | 403.2 | 1.6 |
| 03:20 | 3.78 | 399.6 | 1.70 | 0.0 | 396.1 | 1.4 |
| 03:19 | 3.72 | 399.9 | 1.90 | 0.0 | 395.4 | 1.4 |
| 03:18 | 3.88 | 400.5 | 2.01 | 0.0 | 402.4 | 1.6 |
| 03:17 | 3.85 | 400.7 | 1.80 | 0.0 | 414.6 | 1.7 |
| 03:16 | 4.08 | 398.2 | 1.15 | 0.0 | 405.1 | 1.7 |
| 03:15 | 3.79 | 399.6 | 1.52 | 0.0 | 394.5 | 1.7 |
| 03:14 | 3.92 | 399.8 | 1.34 | 0.0 | 389.7 | 1.8 |
| 03:13 | 4.01 | 400.6 | 1.23 | 0.0 | 395.7 | 1.7 |
| 03:12 | 4.08 | 399.9 | 1.13 | 0.0 | 399.9 | 1.3 |
| 03:11 | 4.10 | 399.6 | 1.14 | 0.0 | 394.1 | 1.0 |
| 03:10 | 4.24 | 397.8 | 1.23 | 0.0 | 390.8 | 0.5 |
| 03:09 | 4.26 | 398.2 | 1.22 | 0.0 | 396.9 | 0.8 |
| 03:08 | 4.16 | 399.7 | 1.18 | 0.0 | 401.0 | 2.1 |
| 03:07 | 3.95 | 398.6 | 1.31 | - | - | 1.9 |
| 03:06 | 4.23 | 400.7 | 1.30 | 0.0 | 393.8 | 1.8 |
| 03:05 | 4.35 | 401.2 | 1.37 | 0.0 | 394.0 | 1.9 |
| 03:04 | 4.09 | 400.4 | 1.45 | 0.0 | 409.2 | 2.0 |
| 03:03 | 4.06 | 401.1 | 0.41 | 0.0 | 381.0 | 1.9 |
| 03:02 | 4.04 | 401.3 | 0.11 | 0.0 | 387.5 | 1.7 |
| 03:01 | 3.97 | 400.8 | 0.69 | 0.0 | 406.0 | 1.8 |
| 03:00 | 3.92 | 400.6 | 1.20 | 0.0 | 401.0 | 1.7 |
| 02:59 | 3.96 | 401.1 | 1.13 | - | - | 1.9 |
| 02:58 | 4.02 | 402.5 | 1.55 | 0.0 | 398.7 | 2.0 |
| 02:57 | 3.83 | 401.7 | 1.41 | 0.0 | 393.3 | 2.4 |
| 02:56 | 3.80 | 401.4 | 1.37 | 0.0 | 393.3 | 2.2 |
| 02:55 | 3.74 | 402.7 | 1.34 | 0.0 | 398.7 | 1.6 |
| 02:54 | 3.76 | 402.7 | 1.32 | 0.0 | 395.5 | 1.5 |
| 02:53 | 3.88 | 401.7 | 1.17 | 0.0 | 390.7 | 1.6 |
| 02:52 | 3.86 | 404.1 | 1.39 | 0.0 | 392.4 | 1.8 |
| 02:51 | 3.87 | 402.8 | 1.29 | 0.0 | 400.8 | 1.8 |
| 02:50 | 3.88 | 404.9 | 1.23 | 0.0 | 402.8 | 1.9 |
| 02:49 | 3.90 | 405.3 | 0.96 | 0.0 | 403.5 | 2.0 |
| 02:48 | 3.87 | 403.7 | 0.94 | 0.0 | 426.4 | 1.8 |
| 02:47 | 3.99 | 406.9 | 1.02 | 0.0 | 392.0 | 1.5 |
| 02:46 | 3.98 | 402.4 | 0.76 | 0.0 | 395.4 | 1.5 |
| 02:45 | 3.80 | 401.4 | 1.17 | 0.0 | 392.4 | 1.6 |
| 02:44 | 3.74 | 400.5 | 1.38 | 0.0 | 391.3 | 1.8 |
| 02:43 | 3.74 | 399.4 | 1.39 | 0.0 | 400.3 | 1.3 |
| 02:42 | 3.61 | 397.7 | 1.48 | 0.0 | 398.3 | 0.8 |
| 02:41 | 3.83 | 398.8 | 1.64 | 0.0 | 396.3 | 1.4 |
| 02:40 | 3.87 | 401.0 | 1.25 | 0.0 | 398.4 | 1.2 |
| 02:39 | 3.89 | 402.2 | 0.90 | 0.0 | 398.2 | 0.6 |
| 02:38 | 3.94 | 408.7 | 0.29 | 0.0 | 400.1 | 0.2 |
| 02:37 | 3.98 | 407.0 | 0.01 | 0.0 | 403.7 | -0.0 |
| 02:36 | 4.05 | 406.6 | -0.11 | 0.0 | 399.2 | 0.2 |
| 02:35 | 4.02 | 406.3 | -0.06 | 0.0 | 400.0 | 0.1 |
| 02:34 | 4.00 | 407.0 | 0.06 | 0.0 | 415.0 | 0.3 |
| 02:33 | 3.94 | 407.1 | -0.01 | 0.0 | - | 0.1 |
| 02:32 | 3.92 | 408.3 | -0.08 | 0.0 | 400.2 | 0.9 |
| 02:31 | 3.89 | 403.7 | -0.06 | 0.0 | 394.4 | 1.0 |
| 02:30 | 3.86 | 403.1 | 0.32 | 0.0 | 388.8 | 0.8 |
| 02:29 | 3.49 | 400.1 | 1.30 | 0.0 | 394.8 | 0.9 |
| 02:28 | 3.69 | 400.1 | 1.13 | 0.0 | 388.7 | 1.3 |
| 02:27 | 3.75 | 400.1 | 0.68 | 0.0 | 392.3 | 1.0 |
| 02:26 | 4.00 | 400.8 | 0.59 | 0.0 | 390.6 | 0.3 |
| 02:25 | 3.71 | 400.7 | 1.01 | 0.0 | 395.6 | 0.4 |
| 02:24 | 3.61 | 400.1 | 0.74 | 0.0 | 393.2 | 0.5 |
| 02:23 | 3.59 | 400.4 | 0.61 | 0.0 | 386.0 | 0.8 |
| 02:22 | 3.41 | 399.5 | 0.60 | 0.0 | 386.5 | 0.8 |
| 02:21 | 3.46 | 399.5 | 0.43 | 0.0 | 383.7 | 1.0 |
| 02:20 | 3.70 | 399.2 | 0.33 | 0.0 | 393.1 | 1.5 |
| 02:19 | 3.40 | 399.0 | 0.25 | 0.0 | 406.1 | 1.2 |
| 02:18 | 3.48 | 399.3 | 0.62 | 0.0 | 391.1 | 1.2 |
| 02:17 | 3.46 | 399.7 | 0.18 | 0.0 | 386.1 | 2.4 |
| 02:16 | 3.62 | 401.3 | 0.45 | 0.0 | 437.4 | 2.6 |
| 02:15 | 3.87 | 402.5 | 0.11 | 0.0 | 398.1 | 2.1 |
| 02:14 | 3.77 | 401.8 | 0.03 | 0.0 | 387.2 | 1.9 |
| 02:13 | 3.50 | 399.5 | 0.75 | 0.0 | 374.7 | 1.7 |
| 02:12 | 3.60 | 400.2 | 0.48 | 0.0 | 462.7 | 1.8 |
| 02:11 | 3.64 | 399.8 | 0.28 | 0.0 | 416.6 | 1.9 |
| 02:10 | 3.45 | 400.3 | 0.74 | 0.0 | 392.9 | 1.7 |
| 02:09 | 3.55 | 399.2 | 0.71 | 0.0 | 391.3 | 1.6 |
| 02:08 | 3.27 | 398.5 | 0.99 | 0.0 | 389.0 | 1.7 |
| 02:07 | 3.40 | 398.6 | 1.25 | 0.0 | 392.5 | 1.8 |
| 02:06 | 3.33 | 399.2 | 1.34 | 0.0 | 391.4 | 2.2 |
| 02:05 | 3.45 | 399.8 | 1.44 | 0.0 | 391.6 | 2.1 |
| 02:04 | 3.51 | 394.6 | 1.63 | 0.0 | 383.7 | 1.5 |
| 02:03 | 3.49 | 396.9 | 1.59 | 0.0 | 378.6 | 1.5 |
Built 2021-05-14 04:03 from source
| Solar wind parameters of the latest hour by NOAA | |||
|---|---|---|---|
| parameter | min | max | mean |
| IMF Bz [nT] | -3.2 | 2.0 | 0.7 |
| velocity [km/s] | 393.7 | 404.0 | 398.3 |
| density [cm-3] | 3.7 | 5.0 | 4.2 |
| Geomagnetic activity (RX [nT]) | ||
|---|---|---|
| site | latest hour | next hour (RXmin, RXmax) |
| Kevo (KEV) | 15 | 4 | 66 |
| Maasi (MAS) | 15 | 4 | 72 |
| Kilpisjärvi (KIL) | 16 | 4 | 72 |
| Ivalo (IVA) | 14 | 3 | 45 |
| Muonio (MUO) | 14 | 3 | 43 |
| Sodankylä (SOD) | 14 | 3 | 38 |
| Pello (PEL) | 13 | 3 | 35 |
| Oulujärvi (OUJ) | 11 | 2 | 21 |
| Mekrijärvi (MEK) | 7 | 2 | 12 |
| Hankasalmi (HAN) | 6 | 2 | 15 |
| Nurmijärvi (NUR) | 5 | 2 | 16 |
| Tartu (TAR) | 3 | 2 | 11 |
| low | increased | moderate | high | very high |
Short explanation of the method
AurorasNow! (Finnish Meteorological Institute)Built 2021-05-14 04:02 from source
Issue Time: 2021-05-13 05:31 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3898
Valid From: 2021-05-12 06:00 UTC
Now Valid Until: 2021-05-13 15:00 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: 3898
Valid From: 2021-05-12 06:00 UTC
Now Valid Until: 2021-05-13 15:00 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: 2021-05-12 17:59 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3897
Valid From: 2021-05-12 06:00 UTC
Now Valid Until: 2021-05-13 06:00 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: 3897
Valid From: 2021-05-12 06:00 UTC
Now Valid Until: 2021-05-13 06:00 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: 2021-05-12 17:59 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1600
Valid From: 2021-05-12 07:00 UTC
Now Valid Until: 2021-05-13 06:00 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: 1600
Valid From: 2021-05-12 07:00 UTC
Now Valid Until: 2021-05-13 06:00 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: 2021-05-12 17:59 UTC
EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 443
Valid From: 2021-05-12 12:25 UTC
Now Valid Until: 2021-05-12 23:59 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: 443
Valid From: 2021-05-12 12:25 UTC
Now Valid Until: 2021-05-12 23:59 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: 2021-05-12 17:59 UTC
EXTENDED WARNING: Geomagnetic K-index of 7 or greater expected
Extension to Serial Number: 77
Valid From: 2021-05-12 12:50 UTC
Now Valid Until: 2021-05-12 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: 77
Valid From: 2021-05-12 12:50 UTC
Now Valid Until: 2021-05-12 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: 2021-05-12 17:59 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2021-05-12 17:59 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: 2021-05-12 17:59 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: 2021-05-12 15:42 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2021-05-12 15:42 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: 2021-05-12 15:42 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: 2021-05-12 15:29 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2021-05-12 15:28 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: 2021-05-12 15:28 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: 2021-05-12 12:59 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2021-05-12 12:58 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: 2021-05-12 12:58 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: 2021-05-12 12:52 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1599
Valid From: 2021-05-12 07:00 UTC
Now Valid Until: 2021-05-12 18:00 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: 1599
Valid From: 2021-05-12 07:00 UTC
Now Valid Until: 2021-05-12 18:00 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: 2021-05-12 12:49 UTC
WARNING: Geomagnetic K-index of 7 or greater expected
Valid From: 2021-05-12 12:50 UTC
Valid To: 2021-05-12 18:00 UTC
Warning Condition: Onset
NOAA Scale: G3 or greater - Strong to Extreme
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: 2021-05-12 12:50 UTC
Valid To: 2021-05-12 18:00 UTC
Warning Condition: Onset
NOAA Scale: G3 or greater - Strong to Extreme
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: 2021-05-12 12:32 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2021-05-12 12:32 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: 2021-05-12 12:32 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: 2021-05-12 12:30 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2021-05-12 12:30 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: 2021-05-12 12:30 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: 2021-05-12 12:28 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2021-05-12 12:25 UTC
Valid To: 2021-05-12 18:00 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: 2021-05-12 12:25 UTC
Valid To: 2021-05-12 18:00 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: 2021-05-12 11:23 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3896
Valid From: 2021-05-12 06:00 UTC
Now Valid Until: 2021-05-12 18:00 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: 3896
Valid From: 2021-05-12 06:00 UTC
Now Valid Until: 2021-05-12 18:00 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: 2021-05-12 07:11 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2021-05-12 07:11 UTC
Synoptic Period: 0600-0900 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: 2021-05-12 07:11 UTC
Synoptic Period: 0600-0900 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: 2021-05-12 06:54 UTC
SUMMARY: Geomagnetic Sudden Impulse
Observed: 2021-05-12 06:43 UTC
Deviation: 51 nT
Station: FRD
SUMMARY: Geomagnetic Sudden Impulse
Observed: 2021-05-12 06:43 UTC
Deviation: 51 nT
Station: FRD
Issue Time: 2021-05-12 06:46 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2021-05-12 07:00 UTC
Valid To: 2021-05-12 13:00 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: 2021-05-12 07:00 UTC
Valid To: 2021-05-12 13:00 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: 2021-05-12 05:58 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2021-05-12 06:00 UTC
Valid To: 2021-05-12 12:30 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: 2021-05-12 06:00 UTC
Valid To: 2021-05-12 12:30 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: 2021-05-12 05:56 UTC
WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2021-05-12 05:54 UTC
Valid To: 2021-05-12 07:00 UTC
IP Shock Passage Observed: 2021-05-12 05:47 UTC
WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2021-05-12 05:54 UTC
Valid To: 2021-05-12 07:00 UTC
IP Shock Passage Observed: 2021-05-12 05:47 UTC
Built 2021-05-13 05:34 from source
