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| Time UTC | DSCOVR | ACE | ||||
|---|---|---|---|---|---|---|
| Solar Wind | GSM | Solar Wind | GSM | |||
| Proton Density | Bulk Speed | Bz | Proton Density | Bulk Speed | Bz | |
| 11:12 | - | - | - | - | - | - |
| 11:11 | - | - | - | - | - | - |
| 11:10 | - | - | - | - | - | - |
| 11:09 | 8.20 | 395.7 | 8.39 | - | - | 8.4 |
| 11:08 | 8.18 | 392.9 | 8.43 | 7.6 | 393.1 | 8.4 |
| 11:07 | 7.67 | 392.0 | 8.48 | 7.8 | 393.5 | 8.4 |
| 11:06 | 8.10 | 393.9 | 8.49 | 6.8 | 394.5 | 8.4 |
| 11:05 | 8.01 | 392.0 | 8.59 | 7.2 | 395.3 | 8.4 |
| 11:04 | 7.88 | 391.7 | 8.53 | 7.2 | 395.6 | 8.3 |
| 11:03 | 7.75 | 389.6 | 8.60 | 7.1 | 395.8 | 8.4 |
| 11:02 | 7.86 | 395.5 | 8.47 | 7.0 | 394.6 | 8.4 |
| 11:01 | 8.07 | 401.2 | 8.00 | 7.3 | 393.2 | 8.4 |
| 11:00 | 8.15 | 397.6 | 8.45 | 7.6 | 394.0 | 8.4 |
| 10:59 | 8.03 | 397.4 | 8.39 | 6.7 | 393.6 | 8.2 |
| 10:58 | 7.95 | 397.9 | 8.40 | 7.0 | 394.2 | 8.4 |
| 10:57 | 8.04 | 399.2 | 8.31 | 7.6 | 396.1 | 7.8 |
| 10:56 | 7.86 | 400.9 | 8.15 | 7.3 | 399.7 | 7.8 |
| 10:55 | 8.12 | 401.7 | 8.10 | 7.0 | 397.6 | 7.8 |
| 10:54 | 8.01 | 400.2 | 8.23 | 6.9 | 403.6 | 7.9 |
| 10:53 | 7.97 | 400.0 | 8.22 | 7.0 | 402.7 | 7.5 |
| 10:52 | 7.96 | 400.1 | 8.20 | 7.7 | 401.3 | 7.3 |
| 10:51 | 7.91 | 399.0 | 8.25 | 6.2 | 398.7 | 7.7 |
| 10:50 | 7.88 | 399.3 | 8.25 | 6.8 | 397.5 | 8.1 |
| 10:49 | 7.84 | 400.1 | 8.22 | 6.8 | 397.3 | 8.2 |
| 10:48 | 7.69 | 399.8 | 8.17 | 7.0 | 397.3 | 8.2 |
| 10:47 | 7.90 | 400.5 | 8.18 | 7.1 | 396.7 | 8.1 |
| 10:46 | 7.84 | 399.9 | 8.15 | 6.9 | 395.6 | 8.1 |
| 10:45 | 7.96 | 401.6 | 7.91 | 6.9 | 395.1 | 8.3 |
| 10:44 | 7.81 | 401.3 | 7.88 | 6.9 | 395.5 | 8.3 |
| 10:43 | 7.90 | 399.9 | 8.05 | 7.3 | 394.4 | 8.2 |
| 10:42 | 7.69 | 400.1 | 8.13 | 7.4 | 392.9 | 8.3 |
| 10:41 | 7.73 | 399.4 | 8.33 | 6.9 | 398.3 | 8.2 |
| 10:40 | 7.54 | 397.9 | 8.44 | 6.9 | 388.4 | 8.6 |
| 10:39 | 7.91 | 397.1 | 8.46 | 6.9 | 386.6 | 8.7 |
| 10:38 | 7.77 | 396.3 | 8.46 | 6.9 | 389.4 | 8.6 |
| 10:37 | 7.67 | 398.5 | 8.47 | 7.7 | 389.8 | 8.4 |
| 10:36 | 7.80 | 397.6 | 8.52 | 7.9 | 387.7 | 8.4 |
| 10:35 | 7.69 | 396.8 | 8.52 | 6.3 | 392.1 | 8.4 |
| 10:34 | 7.87 | 396.1 | 8.52 | 5.8 | 393.6 | 8.3 |
| 10:33 | 7.78 | 398.2 | 8.44 | 7.5 | 396.9 | 8.2 |
| 10:32 | 7.91 | 399.6 | 8.38 | 7.5 | 395.3 | 8.1 |
| 10:31 | 7.90 | 400.2 | 8.39 | 7.0 | 395.3 | 8.2 |
| 10:30 | 7.57 | 385.2 | 8.91 | 6.8 | 397.3 | 8.1 |
| 10:29 | 7.25 | 390.3 | 8.84 | 7.0 | 398.1 | 8.2 |
| 10:28 | 7.49 | 387.5 | 8.88 | 6.9 | 397.5 | 8.1 |
| 10:27 | 7.39 | 388.2 | 8.92 | 6.9 | 396.1 | 8.2 |
| 10:26 | 7.23 | 389.1 | 8.95 | 6.9 | 394.5 | 8.3 |
| 10:25 | 7.14 | 391.8 | 8.85 | 7.4 | 394.2 | 8.4 |
| 10:24 | 7.21 | 391.9 | 8.83 | 6.9 | 395.3 | 8.4 |
| 10:23 | 7.61 | 396.5 | 8.82 | 5.2 | 396.2 | 8.4 |
| 10:22 | 7.51 | 397.7 | 8.69 | 6.7 | 397.8 | 8.3 |
| 10:21 | 7.44 | 397.6 | 8.66 | 7.1 | 396.2 | 8.2 |
| 10:20 | 7.22 | 399.1 | 8.63 | 6.9 | 395.1 | 8.3 |
| 10:19 | 7.42 | 400.4 | 8.59 | 6.9 | 394.4 | 8.3 |
| 10:18 | 7.38 | 400.7 | 8.58 | 7.1 | 394.7 | 8.3 |
| 10:17 | 7.33 | 400.1 | 8.66 | 7.1 | 394.3 | 8.3 |
| 10:16 | 7.40 | 399.9 | 8.66 | 7.2 | 393.4 | 8.4 |
| 10:15 | 7.31 | 399.6 | 8.58 | 7.3 | 393.3 | 8.3 |
| 10:14 | 7.44 | 406.1 | 7.93 | 7.1 | 393.7 | 8.4 |
| 10:13 | 7.41 | 406.7 | 7.71 | 7.0 | 393.8 | 8.4 |
| 10:12 | 7.39 | 405.7 | 7.85 | 7.3 | 393.1 | 8.4 |
| 10:11 | 7.54 | 408.0 | 7.79 | 7.0 | 391.7 | 8.5 |
| 10:10 | 7.46 | 405.0 | 7.98 | 7.0 | 390.4 | 8.5 |
| 10:09 | 7.53 | 402.5 | 8.26 | 6.5 | 390.2 | 8.6 |
| 10:08 | 7.55 | 401.7 | 8.35 | 7.2 | 389.4 | 8.6 |
| 10:07 | 7.62 | 400.9 | 8.29 | 5.4 | 388.2 | 8.7 |
| 10:06 | 7.50 | 401.4 | 8.19 | 7.0 | 388.8 | 8.7 |
| 10:05 | 7.54 | 401.6 | 8.21 | 6.8 | 389.1 | 8.7 |
| 10:04 | 7.64 | 402.6 | 8.20 | 7.0 | 389.8 | 8.7 |
| 10:03 | 7.61 | 403.0 | 8.14 | 6.6 | 387.8 | 8.7 |
| 10:02 | 7.57 | 402.9 | 8.11 | 6.7 | 389.5 | 8.7 |
| 10:01 | 7.63 | 404.1 | 8.22 | 6.8 | 390.4 | 8.7 |
| 10:00 | 7.39 | 404.1 | 8.58 | 7.6 | 386.3 | 8.6 |
| 09:59 | 7.36 | 402.8 | 8.59 | - | - | - |
| 09:58 | 7.41 | 400.7 | 8.68 | 7.3 | 385.7 | 8.6 |
| 09:57 | 8.07 | 409.9 | 7.33 | 7.4 | 386.9 | 8.6 |
| 09:56 | 7.84 | 407.5 | 7.33 | 7.1 | 387.7 | 8.6 |
| 09:55 | 7.64 | 409.9 | 6.94 | 6.8 | 387.9 | 8.6 |
| 09:54 | 7.48 | 410.5 | 6.78 | 6.7 | 388.9 | 8.7 |
| 09:53 | 7.47 | 412.8 | 6.20 | 7.0 | 389.8 | 8.7 |
| 09:52 | 8.25 | 416.7 | 6.28 | 6.9 | 389.8 | 8.7 |
| 09:51 | 8.39 | 415.8 | 6.28 | 6.1 | 389.2 | 8.7 |
| 09:50 | 8.11 | 416.8 | 6.36 | 6.3 | 392.9 | 8.7 |
| 09:49 | 7.84 | 414.4 | 6.60 | 6.8 | 395.7 | 8.7 |
| 09:48 | 7.93 | 414.3 | 6.42 | 6.0 | 399.9 | 8.5 |
| 09:47 | 7.99 | 417.0 | 6.35 | 6.3 | 403.2 | 8.3 |
| 09:46 | 7.93 | 416.9 | 6.88 | 6.4 | 403.9 | 8.2 |
| 09:45 | 8.24 | 416.1 | 6.34 | 6.7 | 403.8 | 8.1 |
| 09:44 | 8.52 | 415.0 | 5.56 | 6.6 | 404.4 | 8.1 |
| 09:43 | 7.94 | 413.7 | 5.91 | 6.6 | 404.6 | 8.0 |
| 09:42 | 8.34 | 412.6 | 6.27 | 6.8 | 402.9 | 7.9 |
| 09:41 | 8.21 | 413.6 | 5.85 | 6.8 | 401.7 | 8.1 |
| 09:40 | 8.37 | 416.4 | 5.72 | 6.2 | 403.0 | 8.5 |
| 09:39 | 7.60 | 412.6 | 6.29 | 5.5 | 403.6 | 8.5 |
| 09:38 | 7.71 | 413.5 | 6.30 | 6.6 | 403.6 | 8.5 |
| 09:37 | 7.76 | 411.6 | 6.27 | 6.3 | 406.8 | 8.4 |
| 09:36 | 7.98 | 412.5 | 6.23 | 7.0 | 407.5 | 8.1 |
| 09:35 | 8.21 | 417.5 | 5.84 | 6.3 | 409.7 | 7.8 |
| 09:34 | 9.52 | 421.1 | 5.24 | 6.8 | 405.9 | 7.7 |
| 09:33 | 9.51 | 421.4 | 5.38 | 6.3 | 407.7 | 8.1 |
| 09:32 | 9.59 | 421.6 | 5.40 | 7.0 | 411.3 | 7.7 |
| 09:31 | 9.53 | 420.4 | 5.73 | 6.8 | 409.4 | 7.7 |
| 09:30 | 9.89 | 417.3 | 6.29 | 7.7 | 406.7 | 7.7 |
| 09:29 | 9.61 | 416.3 | 6.34 | 6.4 | 402.1 | 7.9 |
| 09:28 | 9.25 | 414.0 | 6.37 | 5.5 | 400.0 | 8.4 |
| 09:27 | 8.93 | 411.8 | 6.71 | 6.7 | 406.9 | 7.8 |
| 09:26 | 8.77 | 408.2 | 6.87 | 7.1 | 409.1 | 6.6 |
| 09:25 | 8.85 | 412.0 | 7.04 | 7.5 | 412.6 | 6.0 |
| 09:24 | 8.75 | 411.8 | 7.00 | 7.5 | 411.9 | 5.6 |
| 09:23 | 8.80 | 414.4 | 6.96 | 7.1 | 406.4 | 5.8 |
| 09:22 | 8.68 | 413.6 | 6.95 | 6.4 | 402.7 | 7.1 |
| 09:21 | 8.89 | 415.3 | 6.83 | 6.0 | 402.2 | 7.5 |
| 09:20 | 9.11 | 416.4 | 6.64 | 5.9 | 406.5 | 7.3 |
| 09:19 | 9.05 | 418.5 | 6.38 | 7.2 | 407.4 | 5.8 |
| 09:18 | 9.51 | 418.8 | 5.91 | 6.5 | 411.3 | 6.7 |
| 09:17 | 9.38 | 419.1 | 5.41 | 6.8 | 411.4 | 6.0 |
| 09:16 | 9.56 | 417.6 | 5.56 | 6.7 | 407.7 | 6.1 |
| 09:15 | 9.90 | 417.2 | 5.53 | 7.0 | 409.6 | 6.6 |
| 09:14 | 9.68 | 417.5 | 5.63 | 6.7 | 410.4 | 6.3 |
| 09:13 | 9.68 | 417.2 | 5.56 | 6.7 | 409.1 | 6.2 |
Built 2021-10-16 11:13 from source
| Solar wind parameters of the latest hour by NOAA | |||
|---|---|---|---|
| parameter | min | max | mean |
| IMF Bz [nT] | 7.3 | 8.9 | 8.3 |
| velocity [km/s] | 385.2 | 410.5 | 399.9 |
| density [cm-3] | 7.1 | 8.1 | 7.6 |
| Geomagnetic activity (RX [nT]) | ||
|---|---|---|
| site | latest hour | next hour (RXmin, RXmax) |
| Kevo (KEV) | 15 | 4 | 51 |
| Maasi (MAS) | 15 | 3 | 46 |
| Kilpisjärvi (KIL) | 15 | 4 | 55 |
| Ivalo (IVA) | 13 | 5 | 37 |
| Muonio (MUO) | 13 | 4 | 52 |
| Sodankylä (SOD) | 14 | 4 | 53 |
| Pello (PEL) | 12 | 5 | 53 |
| Oulujärvi (OUJ) | 11 | 5 | 48 |
| Mekrijärvi (MEK) | 11 | 11 | 31 |
| Hankasalmi (HAN) | 10 | 4 | 33 |
| Nurmijärvi (NUR) | 12 | 6 | 35 |
| Tartu (TAR) | 13 | 5 | 26 |
| low | increased | moderate | high | very high |
Short explanation of the method
AurorasNow! (Finnish Meteorological Institute)Built 2021-10-16 11:02 from source
Issue Time: 2021-10-12 21:09 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3945
Valid From: 2021-10-12 00:03 UTC
Now Valid Until: 2021-10-13 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: 3945
Valid From: 2021-10-12 00:03 UTC
Now Valid Until: 2021-10-13 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: 2021-10-12 14:31 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1613
Valid From: 2021-10-12 02:00 UTC
Now Valid Until: 2021-10-12 22:00 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: 1613
Valid From: 2021-10-12 02:00 UTC
Now Valid Until: 2021-10-12 22:00 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: 2021-10-12 14:29 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3944
Valid From: 2021-10-12 00:03 UTC
Now Valid Until: 2021-10-12 22:00 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: 3944
Valid From: 2021-10-12 00:03 UTC
Now Valid Until: 2021-10-12 22:00 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: 2021-10-12 10:58 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2021-10-12 10:52 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: 2021-10-12 10:52 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: 2021-10-12 10:24 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2021-10-12 10:20 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: 2021-10-12 10:20 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: 2021-10-12 04:48 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2021-10-12 04:47 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: 2021-10-12 04:47 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: 2021-10-12 04:38 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2021-10-12 04:38 UTC
Valid To: 2021-10-12 15:00 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: 2021-10-12 04:38 UTC
Valid To: 2021-10-12 15:00 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: 2021-10-12 04:05 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2021-10-12 03:58 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: 2021-10-12 03:58 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: 2021-10-12 02:57 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2021-10-12 02:57 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: 2021-10-12 02:57 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: 2021-10-12 02:40 UTC
SUMMARY: Geomagnetic Sudden Impulse
Observed: 2021-10-12 02:30 UTC
Deviation: 33 nT
Station: WNG
SUMMARY: Geomagnetic Sudden Impulse
Observed: 2021-10-12 02:30 UTC
Deviation: 33 nT
Station: WNG
Issue Time: 2021-10-12 01:57 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2021-10-12 02:00 UTC
Valid To: 2021-10-12 15:00 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: 2021-10-12 02:00 UTC
Valid To: 2021-10-12 15:00 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: 2021-10-12 01:55 UTC
WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2021-10-12 02:15 UTC
Valid To: 2021-10-12 03:15 UTC
IP Shock Passage Observed: 2021-10-12 01:47 UTC
WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2021-10-12 02:15 UTC
Valid To: 2021-10-12 03:15 UTC
IP Shock Passage Observed: 2021-10-12 01:47 UTC
Issue Time: 2021-10-12 00:56 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2021-10-12 00:55 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: 2021-10-12 00:55 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: 2021-10-12 00:04 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2021-10-12 00:03 UTC
Valid To: 2021-10-12 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: 2021-10-12 00:03 UTC
Valid To: 2021-10-12 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: 2021-10-11 19:43 UTC
WATCH: Geomagnetic Storm Category G2 Predicted
Highest Storm Level Predicted by Day
Oct 12: G2 (Moderate) Oct 13: None (Below G1) Oct 14: None (Below G1)
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
Oct 12: G2 (Moderate) Oct 13: None (Below G1) Oct 14: None (Below G1)
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: 2021-10-11 02:39 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3942
Valid From: 2021-10-10 22:20 UTC
Now Valid Until: 2021-10-11 12:00 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: 3942
Valid From: 2021-10-10 22:20 UTC
Now Valid Until: 2021-10-11 12:00 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: 2021-10-10 22:38 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2021-10-10 22:35 UTC
Synoptic Period: 2100-2400 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: 2021-10-10 22:35 UTC
Synoptic Period: 2100-2400 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: 2021-10-10 22:20 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2021-10-10 22:20 UTC
Valid To: 2021-10-11 03:00 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: 2021-10-10 22:20 UTC
Valid To: 2021-10-11 03:00 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.
Built 2021-10-12 21:10 from source
