SeadedLast update:
| Time UTC | DSCOVR | ACE | ||||
|---|---|---|---|---|---|---|
| Solar Wind | GSM | Solar Wind | GSM | |||
| Proton Density | Bulk Speed | Bz | Proton Density | Bulk Speed | Bz | |
| 10:16 | - | - | - | - | - | - |
| 10:15 | - | - | - | - | - | - |
| 10:14 | - | - | 4.55 | - | - | - |
| 10:13 | - | - | 5.34 | - | - | - |
| 10:12 | 0.53 | 634.8 | 4.54 | - | - | - |
| 10:11 | 0.52 | 636.8 | 4.32 | - | - | - |
| 10:10 | 0.62 | 624.2 | 2.89 | - | - | - |
| 10:09 | 0.56 | 607.1 | 2.40 | - | - | - |
| 10:08 | 0.69 | 605.5 | 2.87 | - | - | - |
| 10:07 | 1.55 | 633.1 | 0.65 | 1.5 | 633.1 | 0.6 |
| 10:06 | 1.40 | 642.0 | -4.12 | 1.4 | 642.0 | -4.1 |
| 10:05 | 1.55 | 629.8 | -4.19 | 1.6 | 629.8 | -4.2 |
| 10:04 | 1.46 | 644.1 | -3.99 | 1.5 | 644.1 | -4.0 |
| 10:03 | 1.17 | 620.7 | -3.19 | 1.2 | 620.7 | -3.2 |
| 10:02 | 1.14 | 618.1 | 1.24 | 1.1 | 618.1 | 1.2 |
| 10:01 | - | - | - | - | - | - |
| 10:00 | - | - | 0.80 | - | - | 0.8 |
| 09:59 | - | - | - | - | - | - |
| 09:58 | 1.54 | 638.1 | -4.45 | 1.5 | 638.1 | -4.4 |
| 09:57 | 1.66 | 633.3 | -3.30 | 1.7 | 633.3 | -3.3 |
| 09:56 | 1.69 | 627.4 | -3.63 | 1.7 | 627.4 | -3.6 |
| 09:55 | 1.41 | 615.0 | -1.41 | 1.4 | 615.0 | -1.4 |
| 09:54 | 1.23 | 612.7 | -0.31 | 1.2 | 612.7 | -0.3 |
| 09:53 | 1.60 | 619.7 | 0.32 | 1.6 | 619.7 | 0.3 |
| 09:52 | 1.23 | 616.5 | -1.14 | 1.2 | 616.5 | -1.1 |
| 09:51 | 1.14 | 619.3 | 0.48 | 1.1 | 619.3 | 0.5 |
| 09:50 | 1.11 | 613.0 | 0.85 | 1.1 | 613.0 | 0.9 |
| 09:49 | 1.45 | 625.4 | 0.13 | 1.4 | 625.4 | 0.1 |
| 09:48 | 1.57 | 621.4 | -0.40 | 1.6 | 621.4 | -0.4 |
| 09:47 | 1.58 | 621.3 | -0.41 | 1.6 | 621.3 | -0.4 |
| 09:46 | - | - | -0.01 | - | - | -0.0 |
| 09:45 | 1.13 | 611.8 | 1.28 | 1.1 | 611.8 | 1.3 |
| 09:44 | 0.93 | 618.5 | 1.63 | 0.9 | 618.5 | 1.6 |
| 09:43 | 0.63 | 629.2 | 1.68 | 0.6 | 629.2 | 1.7 |
| 09:42 | 1.09 | 626.4 | 3.18 | 1.1 | 626.4 | 3.2 |
| 09:41 | 1.39 | 621.8 | 0.73 | 1.4 | 621.8 | 0.7 |
| 09:40 | 1.37 | 624.3 | -0.70 | 1.4 | 624.3 | -0.7 |
| 09:39 | 1.54 | 628.9 | -1.24 | 1.5 | 628.9 | -1.2 |
| 09:38 | 1.51 | 633.3 | -1.99 | 1.5 | 633.3 | -2.0 |
| 09:37 | - | - | - | - | - | - |
| 09:36 | - | - | - | - | - | - |
| 09:35 | - | - | - | - | - | - |
| 09:34 | 1.86 | - | -5.00 | 1.9 | - | -5.0 |
| 09:33 | 1.86 | 663.9 | -4.55 | 1.9 | 663.9 | -4.5 |
| 09:32 | 1.34 | 664.9 | -4.77 | 1.3 | 664.9 | -4.8 |
| 09:31 | 1.26 | 647.7 | -4.14 | 1.3 | 647.7 | -4.1 |
| 09:30 | 1.61 | 646.8 | -4.45 | 1.6 | 646.8 | -4.5 |
| 09:29 | 1.54 | 645.2 | -4.91 | 1.5 | 645.2 | -4.9 |
| 09:28 | 1.70 | 636.9 | -5.08 | 1.7 | 636.9 | -5.1 |
| 09:27 | 1.78 | 629.3 | -4.43 | 1.8 | 629.3 | -4.4 |
| 09:26 | 1.64 | 640.9 | -4.01 | 1.6 | 640.9 | -4.0 |
| 09:25 | 1.49 | 652.7 | -5.19 | 1.5 | 652.7 | -5.2 |
| 09:24 | 1.41 | 652.7 | -5.59 | 1.4 | 652.7 | -5.6 |
| 09:23 | 1.34 | 650.3 | -5.61 | 1.3 | 650.3 | -5.6 |
| 09:22 | 1.29 | 649.9 | -5.59 | 1.3 | 649.9 | -5.6 |
| 09:21 | 1.38 | 656.7 | -5.64 | 1.4 | 656.7 | -5.6 |
| 09:20 | 1.49 | 670.7 | -5.61 | 1.5 | 670.7 | -5.6 |
| 09:19 | 1.54 | 671.1 | -5.36 | 1.5 | 671.1 | -5.4 |
| 09:18 | 1.39 | 657.0 | -5.40 | 1.4 | 657.0 | -5.4 |
| 09:17 | 0.91 | 583.3 | -5.01 | 0.9 | 583.3 | -5.0 |
| 09:16 | 1.56 | 639.6 | -4.86 | 1.6 | 639.6 | -4.9 |
| 09:15 | 1.64 | 657.1 | -5.14 | 1.6 | 657.1 | -5.1 |
| 09:14 | 1.64 | 658.8 | -5.11 | 1.6 | 658.8 | -5.1 |
| 09:13 | 0.94 | 628.1 | -5.29 | 0.9 | 628.1 | -5.3 |
| 09:12 | 1.35 | 665.6 | -5.42 | 1.3 | 665.6 | -5.4 |
| 09:11 | 1.46 | 689.3 | -5.31 | 1.5 | 689.3 | -5.3 |
| 09:10 | 1.41 | 670.8 | -5.31 | 1.4 | 670.8 | -5.3 |
| 09:09 | 1.42 | 638.4 | -5.27 | 1.4 | 638.4 | -5.3 |
| 09:08 | 1.56 | 620.4 | -3.34 | 1.6 | 620.4 | -3.3 |
| 09:07 | 1.87 | 631.6 | -0.60 | 1.9 | 631.6 | -0.6 |
| 09:06 | 2.04 | 649.4 | -1.38 | 2.0 | 649.4 | -1.4 |
| 09:05 | 1.94 | 631.6 | -1.29 | 1.9 | 631.6 | -1.3 |
| 09:04 | 2.18 | 640.4 | -2.94 | 2.2 | 640.4 | -2.9 |
| 09:03 | 1.52 | 638.2 | -2.64 | 1.5 | 638.2 | -2.6 |
| 09:02 | 1.43 | 624.9 | -3.51 | 1.4 | 624.9 | -3.5 |
| 09:01 | 2.10 | 632.6 | -2.52 | 2.1 | 632.6 | -2.5 |
| 09:00 | 2.07 | 640.1 | -2.85 | 2.1 | 640.1 | -2.9 |
| 08:59 | 0.35 | 568.2 | -2.92 | 0.3 | 568.2 | -2.9 |
| 08:58 | 1.23 | 642.2 | -3.18 | 1.2 | 642.2 | -3.2 |
| 08:57 | 1.79 | 630.5 | -4.96 | 1.8 | 630.5 | -5.0 |
| 08:56 | 1.49 | 611.1 | -2.47 | 1.5 | 611.1 | -2.5 |
| 08:55 | 1.75 | 615.7 | 0.04 | 1.8 | 615.7 | 0.0 |
| 08:54 | 1.71 | 615.4 | -0.02 | 1.7 | 615.4 | -0.0 |
| 08:53 | 1.56 | 613.9 | 0.75 | 1.6 | 613.9 | 0.8 |
| 08:52 | 1.77 | 630.0 | 0.93 | 1.8 | 630.0 | 0.9 |
| 08:51 | 1.55 | 619.4 | 0.85 | 1.6 | 619.4 | 0.9 |
| 08:50 | 1.01 | 583.8 | 1.05 | 1.0 | 583.8 | 1.1 |
| 08:49 | 1.39 | 612.6 | 0.17 | 1.4 | 612.6 | 0.2 |
| 08:48 | 1.30 | 615.0 | -0.31 | 1.3 | 615.0 | -0.3 |
| 08:47 | 1.51 | 636.2 | 0.75 | 1.5 | 636.2 | 0.8 |
| 08:46 | 0.92 | 586.9 | 1.19 | 0.9 | 586.9 | 1.2 |
| 08:45 | 1.92 | 631.8 | -0.41 | 1.9 | 631.8 | -0.4 |
| 08:44 | 1.80 | 636.0 | -0.19 | 1.8 | 636.0 | -0.2 |
| 08:43 | 0.89 | 599.0 | -0.22 | 0.9 | 599.0 | -0.2 |
| 08:42 | 1.32 | 616.2 | 0.17 | 1.3 | 616.2 | 0.2 |
| 08:41 | 1.42 | 620.5 | 0.17 | 1.4 | 620.5 | 0.2 |
| 08:40 | 1.70 | 644.0 | 0.11 | 1.7 | 644.0 | 0.1 |
| 08:39 | 0.90 | 608.8 | 1.18 | 0.9 | 608.8 | 1.2 |
| 08:38 | 0.82 | 604.6 | 1.95 | 0.8 | 604.6 | 2.0 |
| 08:37 | 1.42 | 654.2 | 2.28 | 1.4 | 654.2 | 2.3 |
| 08:36 | 1.45 | 660.3 | 2.36 | 1.4 | 660.3 | 2.4 |
| 08:35 | 0.82 | 602.9 | 3.21 | 0.8 | 602.9 | 3.2 |
| 08:34 | 0.54 | 589.3 | 3.09 | 0.5 | 589.3 | 3.1 |
| 08:33 | 0.99 | 627.4 | 3.21 | 1.0 | 627.4 | 3.2 |
| 08:32 | 1.04 | 624.4 | 3.02 | 1.0 | 624.4 | 3.0 |
| 08:31 | 0.89 | 580.5 | 3.42 | 0.9 | 580.5 | 3.4 |
| 08:30 | 0.97 | 630.2 | 3.24 | 1.0 | 630.2 | 3.2 |
| 08:29 | 0.25 | 568.9 | 3.47 | 0.3 | 568.9 | 3.5 |
| 08:28 | 5.32 | 667.5 | 3.48 | 5.3 | 667.5 | 3.5 |
| 08:27 | 6.42 | 651.3 | 2.88 | 6.4 | 651.3 | 2.9 |
| 08:26 | 2.04 | 635.0 | 2.90 | 2.0 | 635.0 | 2.9 |
| 08:25 | 1.47 | 647.7 | 0.18 | 1.5 | 647.7 | 0.2 |
| 08:24 | 1.46 | 636.8 | 0.22 | 1.5 | 636.8 | 0.2 |
| 08:23 | 1.08 | 641.9 | 0.66 | 1.1 | 641.9 | 0.7 |
| 08:22 | 1.12 | 647.2 | 2.19 | 1.1 | 647.2 | 2.2 |
| 08:21 | 1.22 | 646.8 | 1.00 | 1.2 | 646.8 | 1.0 |
| 08:20 | 1.00 | 625.2 | 1.23 | 1.0 | 625.2 | 1.2 |
| 08:19 | 6.35 | 564.3 | 1.59 | 6.4 | 564.3 | 1.6 |
| 08:18 | 11.51 | 540.9 | 1.74 | 11.5 | 540.9 | 1.7 |
| 08:17 | 1.11 | 614.0 | 2.08 | 1.1 | 614.0 | 2.1 |
Built 2025-07-24 10:17 from source
| Solar wind parameters of the latest hour by NOAA | |||
|---|---|---|---|
| parameter | min | max | mean |
| IMF Bz [nT] | -5.6 | 4.3 | -2.4 |
| velocity [km/s] | 583.3 | 689.3 | 635.9 |
| density [cm-3] | 0.5 | 2.0 | 1.4 |
| Geomagnetic activity (RX [nT]) | ||
|---|---|---|
| site | latest hour | next hour (RXmin, RXmax) |
| Kevo (KEV) | 134 | 26 | 153 |
| Maasi (MAS) | 127 | 25 | 154 |
| Kilpisjärvi (KIL) | 106 | 26 | 148 |
| Ivalo (IVA) | 123 | 24 | 131 |
| Muonio (MUO) | 98 | 23 | 138 |
| Sodankylä (SOD) | 95 | 21 | 132 |
| Pello (PEL) | 90 | 20 | 121 |
| Oulujärvi (OUJ) | 75 | 14 | 102 |
| Mekrijärvi (MEK) | 67 | 9 | 47 |
| Hankasalmi (HAN) | 55 | 10 | 69 |
| Nurmijärvi (NUR) | 53 | 11 | 59 |
| Tartu (TAR) | 48 | 9 | 41 |
| low | increased | moderate | high | very high |
Short explanation of the method
AurorasNow! (Finnish Meteorological Institute)Built 2025-07-24 10:17 from source
Issue Time: 2025-07-23 19:05 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day
Jul 24: G1 (Minor) Jul 25: None (Below G1) Jul 26: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment: Isolated periods of G1 (Minor) geomagnetic storming are likely primarily early on 24 July under sustained CH HSS effects.
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.
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day
Jul 24: G1 (Minor) Jul 25: None (Below G1) Jul 26: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment: Isolated periods of G1 (Minor) geomagnetic storming are likely primarily early on 24 July under sustained CH HSS effects.
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: 2025-07-23 18:05 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5044
Valid From: 2025-07-23 11:37 UTC
Now Valid Until: 2025-07-24 09:00 UTC
Warning Condition: Persistence
Comment: Active conditions are expected to continue through the early periods of 24 Jul under negative polarity CH HSS effects.
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: 5044
Valid From: 2025-07-23 11:37 UTC
Now Valid Until: 2025-07-24 09:00 UTC
Warning Condition: Persistence
Comment: Active conditions are expected to continue through the early periods of 24 Jul under negative polarity CH HSS effects.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
Issue Time: 2025-07-23 15:04 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025-07-23 14:59 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Comment: Minor geomagnetic storming levels were reached due to continued negative polarity CH HSS effects.
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: 2025-07-23 14:59 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Comment: Minor geomagnetic storming levels were reached due to continued negative polarity CH HSS effects.
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: 2025-07-23 11:38 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025-07-23 11:37 UTC
Valid To: 2025-07-23 21:00 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.
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025-07-23 11:37 UTC
Valid To: 2025-07-23 21:00 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: 2025-07-23 11:36 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2083
Valid From: 2025-07-22 20:51 UTC
Now Valid Until: 2025-07-23 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: 2083
Valid From: 2025-07-22 20:51 UTC
Now Valid Until: 2025-07-23 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: 2025-07-23 05:41 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2082
Valid From: 2025-07-22 20:51 UTC
Now Valid Until: 2025-07-23 12:00 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: 2082
Valid From: 2025-07-22 20:51 UTC
Now Valid Until: 2025-07-23 12:00 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: 2025-07-22 22:52 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2025-07-22 22:52 UTC
Valid To: 2025-07-23 06:00 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: 2025-07-22 22:52 UTC
Valid To: 2025-07-23 06:00 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: 2025-07-22 22:49 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025-07-22 22:49 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: 2025-07-22 22:49 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: 2025-07-22 21:05 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025-07-22 20:59 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: 2025-07-22 20:59 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: 2025-07-22 20:51 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025-07-22 20:51 UTC
Valid To: 2025-07-23 06:00 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: 2025-07-22 20:51 UTC
Valid To: 2025-07-23 06:00 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: 2025-07-22 20:50 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025-07-22 20:46 UTC
Synoptic Period: 1800-2100 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: 2025-07-22 20:46 UTC
Synoptic Period: 1800-2100 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: 2025-07-22 19:24 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025-07-22 19:22 UTC
Valid To: 2025-07-23 12:00 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: 2025-07-22 19:22 UTC
Valid To: 2025-07-23 12:00 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: 2025-07-22 05:07 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3501
Begin Time: 2025-07-14 15:50 UTC
Yesterday Maximum 2MeV Flux: 13015 pfu
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3501
Begin Time: 2025-07-14 15:50 UTC
Yesterday Maximum 2MeV Flux: 13015 pfu
Issue Time: 2025-07-21 19:44 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day
Jul 22: None (Below G1) Jul 23: G1 (Minor) Jul 24: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment: G1 (Minor) geomagnetic storming is likely on 23 Jul due to recurrent, negative polarity coronal hole high speed stream effects.
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.
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day
Jul 22: None (Below G1) Jul 23: G1 (Minor) Jul 24: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment: G1 (Minor) geomagnetic storming is likely on 23 Jul due to recurrent, negative polarity coronal hole high speed stream effects.
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: 2025-07-21 05:00 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3500
Begin Time: 2025-07-14 15:50 UTC
Yesterday Maximum 2MeV Flux: 14495 pfu
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3500
Begin Time: 2025-07-14 15:50 UTC
Yesterday Maximum 2MeV Flux: 14495 pfu
Built 2025-07-23 19:07 from source
