SeadedLast update:
| Time UTC | DSCOVR | ACE | ||||
|---|---|---|---|---|---|---|
| Solar Wind | GSM | Solar Wind | GSM | |||
| Proton Density | Bulk Speed | Bz | Proton Density | Bulk Speed | Bz | |
| 11:53 | - | - | - | - | - | - |
| 11:52 | - | - | - | - | - | - |
| 11:51 | 4.98 | 387.9 | 1.22 | - | - | - |
| 11:50 | 6.53 | 392.1 | 0.49 | - | - | - |
| 11:49 | 7.23 | 400.0 | -1.35 | - | - | - |
| 11:48 | 4.97 | 377.8 | -0.49 | - | - | - |
| 11:47 | 4.26 | 380.2 | -0.14 | - | - | - |
| 11:46 | 5.36 | 388.3 | -0.08 | 5.4 | 388.3 | -0.1 |
| 11:45 | 5.96 | 389.5 | -0.09 | 6.0 | 389.5 | -0.1 |
| 11:44 | 4.91 | 380.4 | 0.55 | 4.9 | 380.4 | 0.6 |
| 11:43 | 4.09 | 378.2 | 0.37 | 4.1 | 378.2 | 0.4 |
| 11:42 | 3.95 | 395.4 | 0.64 | 3.9 | 395.4 | 0.6 |
| 11:41 | 3.37 | 397.7 | 1.29 | 3.4 | 397.7 | 1.3 |
| 11:40 | 6.02 | 385.6 | -2.01 | 6.0 | 385.6 | -2.0 |
| 11:39 | 5.26 | 383.3 | -0.15 | 5.3 | 383.3 | -0.2 |
| 11:38 | 4.78 | 385.2 | -0.84 | 4.8 | 385.2 | -0.8 |
| 11:37 | 5.51 | 382.0 | 0.15 | 5.5 | 382.0 | 0.2 |
| 11:36 | 6.53 | 381.7 | -2.21 | 6.5 | 381.7 | -2.2 |
| 11:35 | 6.47 | 384.3 | -2.43 | 6.5 | 384.3 | -2.4 |
| 11:34 | 4.96 | 379.6 | -1.34 | 5.0 | 379.6 | -1.3 |
| 11:33 | 4.69 | 378.8 | -1.19 | 4.7 | 378.8 | -1.2 |
| 11:32 | 5.48 | 387.1 | -0.17 | 5.5 | 387.1 | -0.2 |
| 11:31 | 5.37 | 383.0 | -0.21 | 5.4 | 383.0 | -0.2 |
| 11:30 | 5.16 | 384.6 | -0.37 | 5.2 | 384.6 | -0.4 |
| 11:29 | 4.96 | 390.5 | -0.48 | 5.0 | 390.5 | -0.5 |
| 11:28 | 5.54 | 390.5 | 0.19 | 5.5 | 390.5 | 0.2 |
| 11:27 | 5.78 | 392.4 | -2.54 | 5.8 | 392.4 | -2.5 |
| 11:26 | 4.28 | 401.0 | 1.10 | 4.3 | 401.0 | 1.1 |
| 11:25 | 3.01 | 400.7 | 2.00 | 3.0 | 400.7 | 2.0 |
| 11:24 | 3.05 | 399.5 | 3.12 | 3.0 | 399.5 | 3.1 |
| 11:23 | 3.12 | 396.9 | 3.57 | 3.1 | 396.9 | 3.6 |
| 11:22 | 2.53 | 405.3 | 4.03 | 2.5 | 405.3 | 4.0 |
| 11:21 | 2.31 | 407.6 | 4.80 | 2.3 | 407.6 | 4.8 |
| 11:20 | 6.82 | 390.7 | 3.42 | 6.8 | 390.7 | 3.4 |
| 11:19 | 5.48 | 394.5 | -1.45 | 5.5 | 394.5 | -1.4 |
| 11:18 | 5.44 | 395.3 | -0.22 | 5.4 | 395.3 | -0.2 |
| 11:17 | 6.73 | 385.4 | -0.35 | 6.7 | 385.4 | -0.4 |
| 11:16 | 6.22 | 390.0 | -2.06 | 6.2 | 390.0 | -2.1 |
| 11:15 | 5.38 | 393.0 | -1.08 | 5.4 | 393.0 | -1.1 |
| 11:14 | 5.37 | 388.8 | -0.36 | 5.4 | 388.8 | -0.4 |
| 11:13 | 5.52 | 388.2 | -1.75 | 5.5 | 388.2 | -1.7 |
| 11:12 | 5.83 | 390.9 | -1.69 | 5.8 | 390.9 | -1.7 |
| 11:11 | 6.07 | 392.6 | -2.15 | 6.1 | 392.6 | -2.2 |
| 11:10 | 5.68 | 393.1 | -1.46 | 5.7 | 393.1 | -1.5 |
| 11:09 | 5.61 | 389.1 | -0.91 | 5.6 | 389.1 | -0.9 |
| 11:08 | 6.10 | 384.0 | -2.19 | 6.1 | 384.0 | -2.2 |
| 11:07 | 6.59 | 381.9 | -3.05 | 6.6 | 381.9 | -3.1 |
| 11:06 | 6.23 | 382.7 | -2.58 | 6.2 | 382.7 | -2.6 |
| 11:05 | 5.52 | 386.0 | -2.39 | 5.5 | 386.0 | -2.4 |
| 11:04 | 6.04 | 385.3 | -1.66 | 6.0 | 385.3 | -1.7 |
| 11:03 | 6.45 | 387.0 | -1.68 | 6.5 | 387.0 | -1.7 |
| 11:02 | 6.99 | 387.4 | -1.81 | 7.0 | 387.4 | -1.8 |
| 11:01 | 6.51 | 388.5 | -3.93 | 6.5 | 388.5 | -3.9 |
| 11:00 | 6.35 | 388.8 | -4.03 | 6.4 | 388.8 | -4.0 |
| 10:59 | 6.79 | 392.5 | -3.58 | - | - | -3.6 |
| 10:58 | 6.37 | 392.7 | -3.19 | 6.4 | 392.7 | -3.2 |
| 10:57 | 5.94 | 390.0 | -2.84 | 5.9 | 390.0 | -2.8 |
| 10:56 | 5.72 | 388.8 | -3.18 | 5.7 | 388.8 | -3.2 |
| 10:55 | 5.18 | 388.3 | -1.86 | 5.2 | 388.3 | -1.9 |
| 10:54 | 5.28 | 384.6 | 0.58 | 5.3 | 384.6 | 0.6 |
| 10:53 | 6.88 | 383.9 | -3.25 | 6.9 | 383.9 | -3.2 |
| 10:52 | 6.73 | 383.8 | -3.08 | 6.7 | 383.8 | -3.1 |
| 10:51 | 6.45 | 384.8 | -2.39 | 6.5 | 384.8 | -2.4 |
| 10:50 | 6.43 | - | -1.77 | 6.4 | - | -1.8 |
| 10:49 | 6.43 | 382.0 | -2.35 | 6.4 | 382.0 | -2.3 |
| 10:48 | 5.84 | 379.7 | -1.92 | 5.8 | 379.7 | -1.9 |
| 10:47 | 5.85 | 380.5 | -1.28 | 5.9 | 380.5 | -1.3 |
| 10:46 | 5.91 | 380.6 | -0.53 | 5.9 | 380.6 | -0.5 |
| 10:45 | 5.46 | 384.7 | -0.61 | 5.5 | 384.7 | -0.6 |
| 10:44 | 5.43 | 382.5 | 0.48 | 5.4 | 382.5 | 0.5 |
| 10:43 | 5.85 | 383.2 | -0.50 | 5.9 | 383.2 | -0.5 |
| 10:42 | 6.22 | 382.6 | -1.66 | 6.2 | 382.6 | -1.7 |
| 10:41 | 6.07 | 383.0 | -2.47 | 6.1 | 383.0 | -2.5 |
| 10:40 | 5.71 | 383.4 | -1.85 | 5.7 | 383.4 | -1.9 |
| 10:39 | 5.55 | 382.7 | -0.99 | 5.5 | 382.7 | -1.0 |
| 10:38 | 5.45 | 385.0 | -1.37 | 5.4 | 385.0 | -1.4 |
| 10:37 | 5.47 | 387.9 | -0.59 | 5.5 | 387.9 | -0.6 |
| 10:36 | 5.60 | 388.9 | -0.41 | 5.6 | 388.9 | -0.4 |
| 10:35 | 5.00 | 387.1 | 0.57 | 5.0 | 387.1 | 0.6 |
| 10:34 | 6.50 | 391.8 | 0.01 | 6.5 | 391.8 | 0.0 |
| 10:33 | 7.01 | 384.8 | -0.81 | 7.0 | 384.8 | -0.8 |
| 10:32 | 6.00 | 386.2 | -0.64 | 6.0 | 386.2 | -0.6 |
| 10:31 | 4.95 | 386.3 | 0.02 | 5.0 | 386.3 | 0.0 |
| 10:30 | 5.54 | 384.1 | 0.34 | 5.5 | 384.1 | 0.3 |
| 10:29 | 6.22 | 383.3 | -0.65 | 6.2 | 383.3 | -0.6 |
| 10:28 | 6.33 | 382.2 | -1.60 | 6.3 | 382.2 | -1.6 |
| 10:27 | 6.30 | 381.9 | -1.46 | 6.3 | 381.9 | -1.5 |
| 10:26 | 6.07 | 382.4 | -1.50 | 6.1 | 382.4 | -1.5 |
| 10:25 | 5.77 | 383.4 | -2.16 | 5.8 | 383.4 | -2.2 |
| 10:24 | 5.93 | 382.2 | -3.32 | 5.9 | 382.2 | -3.3 |
| 10:23 | 6.43 | 379.5 | -2.31 | 6.4 | 379.5 | -2.3 |
| 10:22 | 6.55 | 379.1 | -1.84 | 6.6 | 379.1 | -1.8 |
| 10:21 | 6.65 | 379.8 | -2.60 | 6.7 | 379.8 | -2.6 |
| 10:20 | 5.74 | 384.0 | -2.75 | 5.7 | 384.0 | -2.7 |
| 10:19 | 5.27 | 385.4 | 0.17 | 5.3 | 385.4 | 0.2 |
| 10:18 | 3.91 | 393.4 | 0.45 | 3.9 | 393.4 | 0.5 |
| 10:17 | 3.76 | 392.8 | 1.87 | 3.8 | 392.8 | 1.9 |
| 10:16 | 3.67 | 396.2 | 2.42 | 3.7 | 396.2 | 2.4 |
| 10:15 | 3.75 | 397.2 | 2.03 | 3.8 | 397.2 | 2.0 |
| 10:14 | 3.21 | 402.2 | 1.77 | 3.2 | 402.2 | 1.8 |
| 10:13 | 2.86 | 405.7 | 2.16 | 2.9 | 405.7 | 2.2 |
| 10:12 | 2.70 | 406.6 | 4.27 | 2.7 | 406.6 | 4.3 |
| 10:11 | 3.49 | 407.6 | 3.37 | 3.5 | 407.6 | 3.4 |
| 10:10 | 5.35 | 411.1 | -0.16 | 5.4 | 411.1 | -0.2 |
| 10:09 | 5.85 | 409.6 | -3.27 | 5.9 | 409.6 | -3.3 |
| 10:08 | 5.18 | 408.2 | -2.42 | 5.2 | 408.2 | -2.4 |
| 10:07 | 5.83 | 408.4 | -0.61 | 5.8 | 408.4 | -0.6 |
| 10:06 | 5.87 | 404.6 | -2.13 | 5.9 | 404.6 | -2.1 |
| 10:05 | 3.59 | 400.6 | 0.86 | 3.6 | 400.6 | 0.9 |
| 10:04 | 5.69 | 390.8 | 0.67 | 5.7 | 390.8 | 0.7 |
| 10:03 | 6.30 | 393.9 | -2.01 | 6.3 | 393.9 | -2.0 |
| 10:02 | 6.07 | 392.1 | -2.69 | 6.1 | 392.1 | -2.7 |
| 10:01 | 6.03 | 393.9 | -2.43 | 6.0 | 393.9 | -2.4 |
| 10:00 | 6.03 | - | -2.25 | 6.0 | - | -2.3 |
| 09:59 | - | - | - | - | - | - |
| 09:58 | - | - | -1.62 | - | - | -1.6 |
| 09:57 | 5.71 | 394.5 | -1.54 | 5.7 | 394.5 | -1.5 |
| 09:56 | 5.55 | 393.4 | -0.61 | 5.6 | 393.4 | -0.6 |
| 09:55 | 5.80 | 394.5 | -0.72 | 5.8 | 394.5 | -0.7 |
| 09:54 | 5.98 | 395.2 | -0.51 | 6.0 | 395.2 | -0.5 |
Built 2025-04-20 11:54 from source
| Solar wind parameters of the latest hour by NOAA | |||
|---|---|---|---|
| parameter | min | max | mean |
| IMF Bz [nT] | -4.0 | 4.8 | -1.0 |
| velocity [km/s] | 378.2 | 407.6 | 388.4 |
| density [cm-3] | 2.3 | 7.0 | 5.5 |
| Geomagnetic activity (RX [nT]) | ||
|---|---|---|
| site | latest hour | next hour (RXmin, RXmax) |
| Kevo (KEV) | 35 | 5 | 65 |
| Maasi (MAS) | 34 | 5 | 62 |
| Kilpisjärvi (KIL) | 33 | 5 | 65 |
| Ivalo (IVA) | 32 | 4 | 54 |
| Muonio (MUO) | 30 | 4 | 56 |
| Sodankylä (SOD) | 23 | 5 | 56 |
| Pello (PEL) | 28 | 4 | 51 |
| Oulujärvi (OUJ) | 27 | 4 | 41 |
| Mekrijärvi (MEK) | 23 | 3 | 24 |
| Hankasalmi (HAN) | 15 | 4 | 32 |
| Nurmijärvi (NUR) | 17 | 4 | 31 |
| Tartu (TAR) | 14 | 3 | 23 |
| low | increased | moderate | high | very high |
Short explanation of the method
AurorasNow! (Finnish Meteorological Institute)Built 2025-04-20 11:47 from source
Issue Time: 2025-04-20 00:56 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025-04-20 00:55 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: 2025-04-20 00:55 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: 2025-04-20 00:41 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025-04-20 00:38 UTC
Synoptic Period: 0000-0300 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: 2025-04-20 00:38 UTC
Synoptic Period: 0000-0300 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: 2025-04-20 00:38 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025-04-20 00:38 UTC
Valid To: 2025-04-20 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: 2025-04-20 00:38 UTC
Valid To: 2025-04-20 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: 2025-04-20 00:06 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025-04-20 00:05 UTC
Valid To: 2025-04-20 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: 2025-04-20 00:05 UTC
Valid To: 2025-04-20 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: 2025-04-19 20:47 UTC
WATCH: Geomagnetic Storm Category G2 Predicted
Highest Storm Level Predicted by Day
Apr 20: None (Below G1) Apr 21: None (Below G1) Apr 22: G2 (Moderate)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
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.
WATCH: Geomagnetic Storm Category G2 Predicted
Highest Storm Level Predicted by Day
Apr 20: None (Below G1) Apr 21: None (Below G1) Apr 22: G2 (Moderate)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
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: 2025-04-19 14:55 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4931
Valid From: 2025-04-19 02:18 UTC
Now Valid Until: 2025-04-19 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: 4931
Valid From: 2025-04-19 02:18 UTC
Now Valid Until: 2025-04-19 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: 2025-04-19 02:27 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025-04-19 02:27 UTC
Synoptic Period: 0000-0300 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: 2025-04-19 02:27 UTC
Synoptic Period: 0000-0300 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: 2025-04-19 02:19 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025-04-19 02:18 UTC
Valid To: 2025-04-19 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: 2025-04-19 02:18 UTC
Valid To: 2025-04-19 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: 2025-04-19 00:07 UTC
ALERT: Type II Radio Emission
Begin Time: 2025-04-18 23:45 UTC
Estimated Velocity: 349 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: 2025-04-18 23:45 UTC
Estimated Velocity: 349 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: 2025-04-18 04:48 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025-04-18 04:47 UTC
Valid To: 2025-04-18 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: 2025-04-18 04:47 UTC
Valid To: 2025-04-18 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: 2025-04-18 04:02 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025-04-18 03:57 UTC
Synoptic Period: 0300-0600 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: 2025-04-18 03:57 UTC
Synoptic Period: 0300-0600 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: 2025-04-18 01:52 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025-04-18 01:52 UTC
Valid To: 2025-04-18 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: 2025-04-18 01:52 UTC
Valid To: 2025-04-18 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: 2025-04-17 10:12 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4928
Valid From: 2025-04-15 17:05 UTC
Now Valid Until: 2025-04-17 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: 4928
Valid From: 2025-04-15 17:05 UTC
Now Valid Until: 2025-04-17 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.
Built 2025-04-20 00:58 from source
