SettingsLast update:
| Time UTC | DSCOVR | ACE | ||||
|---|---|---|---|---|---|---|
| Solar Wind | GSM | Solar Wind | GSM | |||
| Proton Density | Bulk Speed | Bz | Proton Density | Bulk Speed | Bz | |
| 13:15 | - | - | - | - | - | - |
| 13:14 | - | - | - | - | - | - |
| 13:13 | - | - | - | - | - | - |
| 13:12 | 10.14 | 428.6 | 0.28 | - | - | - |
| 13:11 | 9.60 | 428.2 | 0.29 | - | - | - |
| 13:10 | 9.95 | 427.7 | 0.23 | - | - | - |
| 13:09 | 10.17 | 429.1 | -0.08 | - | - | - |
| 13:08 | 9.96 | 431.9 | -0.15 | - | - | - |
| 13:07 | 9.83 | 431.4 | 0.17 | - | - | -0.3 |
| 13:06 | 9.98 | 430.0 | -0.10 | 0.8 | 399.3 | -0.3 |
| 13:05 | 10.15 | 431.3 | -0.50 | 0.9 | 403.0 | -0.1 |
| 13:04 | 10.00 | 431.2 | -0.64 | 1.0 | 401.7 | 0.0 |
| 13:03 | 9.87 | 430.8 | -0.66 | 1.0 | 403.7 | 0.2 |
| 13:02 | 9.88 | 429.7 | -0.39 | 1.0 | 407.0 | 0.1 |
| 13:01 | 9.71 | 430.5 | -0.28 | 0.9 | 407.6 | 0.3 |
| 13:00 | 9.76 | 430.4 | -0.09 | 0.8 | 403.1 | 0.1 |
| 12:59 | 9.52 | 428.3 | -0.60 | 0.8 | 400.9 | - |
| 12:58 | 9.93 | 430.9 | -1.12 | 0.9 | 403.4 | -0.4 |
| 12:57 | 9.71 | 426.5 | -1.14 | 0.8 | 406.5 | -0.4 |
| 12:56 | 9.67 | 425.3 | -0.38 | 0.8 | 405.4 | -0.2 |
| 12:55 | 9.63 | 427.6 | 0.00 | 0.8 | 398.0 | -0.5 |
| 12:54 | 9.41 | 426.9 | 0.13 | 0.6 | 398.5 | -0.3 |
| 12:53 | 9.46 | 426.7 | -0.16 | 0.8 | 403.0 | 0.2 |
| 12:52 | 9.52 | 428.9 | -0.50 | 0.8 | 403.4 | 0.1 |
| 12:51 | 9.20 | 427.9 | 0.54 | 0.7 | 400.0 | 0.1 |
| 12:50 | 9.36 | 429.2 | 0.40 | 0.7 | 403.5 | 0.2 |
| 12:49 | 9.60 | 428.8 | 0.22 | 0.5 | 395.9 | 0.3 |
| 12:48 | 9.67 | 429.4 | 0.19 | 0.4 | 388.5 | 0.3 |
| 12:47 | 9.53 | 430.2 | 0.31 | 0.4 | 395.6 | 0.1 |
| 12:46 | 9.51 | 431.2 | 0.31 | 0.4 | 394.1 | -0.0 |
| 12:45 | 9.82 | 430.4 | 0.11 | 0.2 | 383.5 | -0.3 |
| 12:44 | 9.56 | 429.5 | 0.07 | 0.3 | 401.3 | -0.2 |
| 12:43 | 9.62 | 429.0 | 0.06 | 0.9 | 422.5 | -0.2 |
| 12:42 | 9.79 | 432.4 | -0.16 | 1.3 | 410.9 | -0.3 |
| 12:41 | 9.80 | 432.8 | -0.05 | 1.2 | 409.4 | -0.3 |
| 12:40 | 9.95 | 431.8 | -0.27 | 0.4 | 388.8 | -0.3 |
| 12:39 | 9.60 | 433.1 | -0.25 | 0.3 | 383.7 | -0.5 |
| 12:38 | 10.11 | 435.7 | -0.04 | 0.4 | 387.6 | -0.5 |
| 12:37 | 9.83 | 433.1 | 0.02 | 0.3 | 390.3 | -0.6 |
| 12:36 | 10.01 | 436.9 | -0.03 | 0.4 | 392.6 | -0.5 |
| 12:35 | 9.54 | 438.5 | -0.61 | 0.3 | 382.7 | -0.4 |
| 12:34 | 9.57 | 431.6 | -0.20 | 0.7 | 401.9 | -0.4 |
| 12:33 | 9.37 | 440.0 | -0.53 | 1.4 | 407.7 | -0.6 |
| 12:32 | 9.72 | 440.9 | 0.52 | 1.0 | 394.9 | -0.5 |
| 12:31 | 10.50 | 446.4 | -0.04 | 0.3 | 385.1 | -0.5 |
| 12:30 | 12.15 | 462.0 | 0.13 | 0.4 | 393.7 | -0.3 |
| 12:29 | 10.95 | 452.8 | -0.25 | 0.6 | 407.5 | -0.2 |
| 12:28 | 9.31 | 445.9 | 0.25 | 0.5 | 400.6 | 0.0 |
| 12:27 | 10.07 | 437.1 | 0.40 | 0.6 | 392.5 | 0.3 |
| 12:26 | 10.17 | 436.0 | 0.36 | 0.5 | 389.9 | 0.6 |
| 12:25 | 9.85 | 438.3 | 0.27 | 0.6 | 395.2 | 0.6 |
| 12:24 | 9.85 | 445.4 | 0.30 | 0.8 | 404.6 | 0.6 |
| 12:23 | 9.96 | 444.9 | 0.42 | 0.5 | 407.9 | 0.2 |
| 12:22 | 9.60 | 441.9 | 0.55 | 0.6 | 400.0 | 0.3 |
| 12:21 | 9.71 | 444.4 | 0.28 | 0.8 | 408.3 | 0.2 |
| 12:20 | 9.77 | 441.8 | 0.26 | 0.9 | 408.6 | -0.0 |
| 12:19 | 9.74 | 434.0 | 0.10 | 0.9 | 404.3 | -0.1 |
| 12:18 | 9.73 | 431.9 | 0.03 | 0.9 | 398.4 | -0.4 |
| 12:17 | 9.57 | 431.0 | 0.00 | 0.7 | 398.2 | -0.3 |
| 12:16 | 9.65 | 431.9 | 0.06 | 0.8 | 409.4 | -0.2 |
| 12:15 | 9.89 | 430.4 | 0.21 | 0.8 | 412.3 | 0.3 |
| 12:14 | 9.54 | 433.0 | 0.09 | 0.7 | 403.7 | 0.8 |
| 12:13 | 9.72 | 433.0 | 0.12 | 0.6 | 401.6 | 1.2 |
| 12:12 | 9.64 | 432.0 | -0.14 | 0.9 | 406.2 | 1.0 |
| 12:11 | 9.80 | 430.3 | -0.12 | 1.2 | 414.8 | 1.5 |
| 12:10 | 9.84 | 428.9 | -0.50 | - | - | -0.7 |
| 12:09 | 10.01 | 430.1 | -0.92 | 4.1 | 424.4 | -1.7 |
| 12:08 | 10.23 | 430.5 | -0.74 | 4.1 | 424.4 | -1.9 |
| 12:07 | 10.16 | 430.2 | -0.80 | 4.2 | 427.6 | -2.2 |
| 12:06 | 10.18 | 431.0 | -0.89 | 2.0 | 406.3 | -2.5 |
| 12:05 | 10.25 | 430.8 | -0.79 | 2.9 | 411.8 | -2.8 |
| 12:04 | 10.10 | 429.7 | -0.48 | 3.0 | 410.7 | -2.1 |
| 12:03 | 10.10 | 430.0 | -0.87 | 4.5 | 418.7 | -1.3 |
| 12:02 | 10.08 | 429.6 | -1.86 | 4.0 | 416.1 | -1.1 |
| 12:01 | 10.15 | 430.3 | -1.44 | 2.8 | 406.0 | -1.5 |
| 12:00 | 10.40 | 432.4 | -1.11 | 3.4 | 410.0 | -1.4 |
| 11:59 | 10.03 | 431.8 | -1.64 | 4.2 | 417.8 | -1.5 |
| 11:58 | 10.12 | 430.5 | -1.84 | 3.8 | 416.0 | -1.6 |
| 11:57 | 10.11 | 428.4 | -2.01 | 2.6 | 406.0 | -1.6 |
| 11:56 | 9.66 | 429.7 | -0.97 | 2.3 | 400.7 | -1.3 |
| 11:55 | 9.40 | 431.7 | -1.58 | 5.0 | 425.4 | -1.2 |
| 11:54 | 9.26 | 432.6 | -1.40 | 3.5 | 422.3 | -1.6 |
| 11:53 | 8.91 | 432.1 | -1.33 | 3.3 | 411.7 | -1.7 |
| 11:52 | 9.07 | 430.8 | -1.73 | 3.6 | 414.6 | -0.9 |
| 11:51 | 9.40 | 428.0 | -0.82 | 2.6 | 410.7 | -1.9 |
| 11:50 | 9.79 | 427.0 | -0.92 | 3.4 | 410.9 | -1.6 |
| 11:49 | 9.61 | 427.6 | -0.52 | 3.3 | 412.8 | -1.7 |
| 11:48 | 9.15 | 428.1 | -0.73 | 3.6 | 414.8 | -1.6 |
| 11:47 | 9.04 | 426.7 | -0.58 | 3.1 | 412.9 | -1.6 |
| 11:46 | 9.13 | 427.9 | -0.58 | 3.0 | 414.9 | -1.4 |
| 11:45 | 9.33 | 428.1 | -0.53 | 2.9 | 416.3 | -1.6 |
| 11:44 | 8.76 | 428.3 | -0.33 | 2.9 | 415.8 | -1.7 |
| 11:43 | 9.06 | 430.9 | -0.62 | 3.0 | 416.0 | -1.5 |
| 11:42 | 9.06 | 427.8 | 0.20 | 2.9 | 414.3 | -1.5 |
| 11:41 | 8.97 | 428.1 | -1.06 | 2.7 | 409.1 | -0.6 |
| 11:40 | 8.75 | 428.0 | 0.02 | 3.1 | 406.7 | -1.7 |
| 11:39 | 8.85 | 428.8 | -0.22 | 3.5 | 408.1 | -1.2 |
| 11:38 | 9.06 | 427.8 | -1.11 | 3.1 | 405.2 | -1.1 |
| 11:37 | 8.55 | 425.8 | -1.44 | 2.8 | 407.0 | -1.0 |
| 11:36 | 8.92 | 427.8 | -1.36 | - | - | -0.9 |
| 11:35 | 9.01 | 426.5 | -1.61 | 3.2 | 407.4 | -1.1 |
| 11:34 | 8.58 | 428.3 | -1.56 | 3.1 | 407.0 | -1.0 |
| 11:33 | 9.48 | 427.0 | -1.41 | 2.5 | 406.2 | -0.9 |
| 11:32 | 9.57 | 425.4 | -1.06 | 2.9 | 408.9 | -1.0 |
| 11:31 | 9.33 | 425.7 | -0.16 | 2.6 | 408.0 | -0.7 |
| 11:30 | 8.79 | 428.3 | -0.95 | 2.2 | 406.8 | -1.7 |
| 11:29 | 8.55 | 427.8 | -2.16 | 2.0 | 410.9 | -1.9 |
| 11:28 | 8.61 | 430.0 | -1.99 | 2.0 | 416.5 | -1.5 |
| 11:27 | 8.83 | 428.3 | -2.01 | 2.1 | 418.7 | -1.4 |
| 11:26 | 9.18 | 428.4 | -1.89 | 2.1 | 417.9 | -1.7 |
| 11:25 | 9.26 | 426.4 | -1.87 | 2.1 | 417.2 | -1.3 |
| 11:24 | 9.14 | 426.4 | -1.25 | 2.0 | 418.0 | -1.3 |
| 11:23 | 8.77 | 425.7 | -1.60 | 2.1 | 417.8 | -1.3 |
| 11:22 | 8.42 | 428.8 | -1.95 | 2.1 | 417.4 | -1.0 |
| 11:21 | 8.59 | 430.8 | -2.03 | 2.1 | 417.4 | -0.8 |
| 11:20 | 8.55 | 429.6 | -1.91 | 1.9 | 416.6 | -0.5 |
| 11:19 | 8.44 | 428.3 | -1.87 | 2.2 | 413.9 | -0.4 |
| 11:18 | 8.47 | 426.4 | -1.40 | 2.0 | 413.3 | -0.3 |
| 11:17 | 8.53 | 427.2 | -1.54 | 2.1 | 412.7 | -0.5 |
| 11:16 | 8.53 | 428.8 | -1.51 | 1.8 | 410.4 | -0.8 |
Built 2025-03-23 13:16 from source
| Solar wind parameters of the latest hour by NOAA | |||
|---|---|---|---|
| parameter | min | max | mean |
| IMF Bz [nT] | -2.0 | 0.6 | -0.2 |
| velocity [km/s] | 425.3 | 462.0 | 433.9 |
| density [cm-3] | 9.2 | 12.2 | 9.9 |
| Geomagnetic activity (RX [nT]) | ||
|---|---|---|
| site | latest hour | next hour (RXmin, RXmax) |
| Kevo (KEV) | 40 | 5 | 86 |
| Maasi (MAS) | 39 | 6 | 88 |
| Kilpisjärvi (KIL) | 37 | 6 | 83 |
| Ivalo (IVA) | 33 | 5 | 67 |
| Muonio (MUO) | 34 | 5 | 67 |
| Sodankylä (SOD) | 33 | 5 | 63 |
| Pello (PEL) | 32 | 5 | 61 |
| Oulujärvi (OUJ) | 29 | 4 | 45 |
| Mekrijärvi (MEK) | 23 | 3 | 28 |
| Hankasalmi (HAN) | 19 | 3 | 35 |
| Nurmijärvi (NUR) | - | 3 | 34 |
| Tartu (TAR) | 15 | 2 | 26 |
| low | increased | moderate | high | very high |
Short explanation of the method
AurorasNow! (Finnish Meteorological Institute)Built 2025-03-23 13:02 from source
Issue Time: 2025-03-22 23:37 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025-03-22 23:37 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: 2025-03-22 23:37 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: 2025-03-22 23:05 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4884
Valid From: 2025-03-21 17:15 UTC
Now Valid Until: 2025-03-23 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: 4884
Valid From: 2025-03-21 17:15 UTC
Now Valid Until: 2025-03-23 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: 2025-03-22 23:05 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1997
Valid From: 2025-03-22 16:48 UTC
Now Valid Until: 2025-03-23 23:59 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: 1997
Valid From: 2025-03-22 16:48 UTC
Now Valid Until: 2025-03-23 23:59 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: 2025-03-22 16:49 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4883
Valid From: 2025-03-21 17:15 UTC
Now Valid Until: 2025-03-22 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: 4883
Valid From: 2025-03-21 17:15 UTC
Now Valid Until: 2025-03-22 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: 2025-03-22 16:48 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025-03-22 16:48 UTC
Valid To: 2025-03-22 23:59 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: 2025-03-22 16:48 UTC
Valid To: 2025-03-22 23:59 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: 2025-03-22 11:21 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4882
Valid From: 2025-03-21 17:15 UTC
Now Valid Until: 2025-03-22 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.
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4882
Valid From: 2025-03-21 17:15 UTC
Now Valid Until: 2025-03-22 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: 2025-03-22 06:03 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4881
Valid From: 2025-03-21 17:15 UTC
Now Valid Until: 2025-03-22 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: 4881
Valid From: 2025-03-21 17:15 UTC
Now Valid Until: 2025-03-22 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: 2025-03-22 03:37 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025-03-22 03:35 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: 2025-03-22 03:35 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: 2025-03-22 03:13 UTC
WATCH: Geomagnetic Storm Category G3 Predicted
Highest Storm Level Predicted by Day
Mar 23: G3 (Strong) Mar 24: G1 (Minor) Mar 25: G2 (Moderate)
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
Mar 23: G3 (Strong) Mar 24: G1 (Minor) Mar 25: G2 (Moderate)
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: 2025-03-22 03:02 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2025-03-22 02:59 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: 2025-03-22 02:59 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: 2025-03-22 01:39 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025-03-22 01:36 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: 2025-03-22 01:36 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: 2025-03-21 23:35 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025-03-21 23:30 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: 2025-03-21 23:30 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: 2025-03-21 19:43 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2025-03-21 19:45 UTC
Valid To: 2025-03-22 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: 2025-03-21 19:45 UTC
Valid To: 2025-03-22 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: 2025-03-21 18:55 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025-03-21 18:55 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: 2025-03-21 18:55 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: 2025-03-21 17:33 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025-03-21 17:32 UTC
Valid To: 2025-03-22 09:00 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: 2025-03-21 17:32 UTC
Valid To: 2025-03-22 09:00 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: 2025-03-21 17:31 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025-03-21 17:30 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: 2025-03-21 17:30 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: 2025-03-21 17:12 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025-03-21 17:15 UTC
Valid To: 2025-03-22 09:00 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: 2025-03-21 17:15 UTC
Valid To: 2025-03-22 09:00 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: 2025-03-21 16:12 UTC
ALERT: Type II Radio Emission
Begin Time: 2025-03-21 15:57 UTC
Estimated Velocity: 242 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: 2025-03-21 15:57 UTC
Estimated Velocity: 242 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.
Built 2025-03-22 23:39 from source
