SettingsLast update:
| Time UTC | DSCOVR | ACE | ||||
|---|---|---|---|---|---|---|
| Solar Wind | GSM | Solar Wind | GSM | |||
| Proton Density | Bulk Speed | Bz | Proton Density | Bulk Speed | Bz | |
| 01:13 | - | - | - | - | - | - |
| 01:12 | - | - | - | - | - | - |
| 01:11 | - | - | - | - | - | - |
| 01:10 | - | - | - | - | - | - |
| 01:09 | - | - | - | - | - | - |
| 01:08 | - | - | - | - | - | - |
| 01:07 | - | - | - | - | - | - |
| 01:06 | - | - | - | - | - | - |
| 01:05 | - | - | - | - | - | - |
| 01:04 | - | - | - | - | - | - |
| 01:03 | - | - | - | - | - | - |
| 01:02 | - | - | - | - | - | - |
| 01:01 | - | - | - | - | - | - |
| 01:00 | 2.31 | 547.0 | 5.27 | 2.3 | 547.0 | 5.3 |
| 00:59 | 2.32 | 548.5 | 5.57 | 2.3 | 548.5 | 5.6 |
| 00:58 | 2.22 | 550.7 | 5.68 | 2.2 | 550.7 | 5.7 |
| 00:57 | 1.93 | 552.4 | 5.63 | 1.9 | 552.4 | 5.6 |
| 00:56 | 2.62 | 567.3 | 6.01 | 2.6 | 567.3 | 6.0 |
| 00:55 | 2.39 | 565.7 | 6.29 | 2.4 | 565.7 | 6.3 |
| 00:54 | 2.45 | 565.7 | 6.38 | 2.5 | 565.7 | 6.4 |
| 00:53 | 2.60 | 563.9 | 6.39 | 2.6 | 563.9 | 6.4 |
| 00:52 | 2.65 | 556.3 | 5.86 | 2.6 | 556.3 | 5.9 |
| 00:51 | 2.51 | 566.7 | 6.04 | 2.5 | 566.7 | 6.0 |
| 00:50 | 2.49 | 568.4 | 6.08 | 2.5 | 568.4 | 6.1 |
| 00:49 | 2.51 | 558.8 | 6.21 | 2.5 | 558.8 | 6.2 |
| 00:48 | 2.27 | 558.0 | 5.97 | 2.3 | 558.0 | 6.0 |
| 00:47 | 2.29 | 558.4 | 6.14 | 2.3 | 558.4 | 6.1 |
| 00:46 | 2.27 | 559.4 | 5.92 | 2.3 | 559.4 | 5.9 |
| 00:45 | 2.17 | 553.5 | 6.16 | 2.2 | 553.5 | 6.2 |
| 00:44 | 2.21 | 547.4 | 5.34 | 2.2 | 547.4 | 5.3 |
| 00:43 | 2.31 | 547.7 | 4.54 | 2.3 | 547.7 | 4.5 |
| 00:42 | 2.26 | 544.0 | 4.29 | 2.3 | 544.0 | 4.3 |
| 00:41 | 2.02 | 543.7 | 4.20 | 2.0 | 543.7 | 4.2 |
| 00:40 | 2.20 | 552.3 | 5.33 | 2.2 | 552.3 | 5.3 |
| 00:39 | 2.22 | 554.9 | 5.56 | 2.2 | 554.9 | 5.6 |
| 00:38 | 2.13 | 553.9 | 5.64 | 2.1 | 553.9 | 5.6 |
| 00:37 | 2.29 | 551.0 | 5.55 | 2.3 | 551.0 | 5.5 |
| 00:36 | 1.78 | 551.3 | 5.48 | 1.8 | 551.3 | 5.5 |
| 00:35 | 2.00 | 561.6 | 5.49 | 2.0 | 561.6 | 5.5 |
| 00:34 | 2.19 | 565.8 | 5.84 | 2.2 | 565.8 | 5.8 |
| 00:33 | 2.23 | 558.6 | 5.71 | 2.2 | 558.6 | 5.7 |
| 00:32 | 2.12 | 552.2 | 5.28 | 2.1 | 552.2 | 5.3 |
| 00:31 | 2.19 | 551.7 | 5.13 | 2.2 | 551.7 | 5.1 |
| 00:30 | 2.11 | 554.2 | 4.94 | 2.1 | 554.2 | 4.9 |
| 00:29 | 2.01 | 554.1 | 4.82 | 2.0 | 554.1 | 4.8 |
| 00:28 | 2.04 | 551.1 | 4.81 | 2.0 | 551.1 | 4.8 |
| 00:27 | 2.07 | 551.2 | 4.47 | 2.1 | 551.2 | 4.5 |
| 00:26 | 2.12 | 550.4 | 4.37 | 2.1 | 550.4 | 4.4 |
| 00:25 | 1.91 | 537.3 | 3.66 | 1.9 | 537.3 | 3.7 |
| 00:24 | 1.93 | 537.3 | 2.69 | 1.9 | 537.3 | 2.7 |
| 00:23 | 1.84 | 537.6 | 2.96 | 1.8 | 537.6 | 3.0 |
| 00:22 | 1.35 | 537.0 | 3.22 | 1.3 | 537.0 | 3.2 |
| 00:21 | 1.85 | 539.2 | 3.18 | 1.9 | 539.2 | 3.2 |
| 00:20 | 1.71 | 538.9 | 2.98 | 1.7 | 538.9 | 3.0 |
| 00:19 | 1.81 | 540.5 | 3.69 | 1.8 | 540.5 | 3.7 |
| 00:18 | 1.83 | 543.3 | 3.85 | 1.8 | 543.3 | 3.8 |
| 00:17 | 1.83 | 543.9 | 3.89 | 1.8 | 543.9 | 3.9 |
| 00:16 | 1.92 | 557.0 | 3.82 | 1.9 | 557.0 | 3.8 |
| 00:15 | 1.99 | 555.8 | 3.84 | 2.0 | 555.8 | 3.8 |
| 00:14 | 1.80 | 553.2 | 3.83 | 1.8 | 553.2 | 3.8 |
| 00:13 | 1.75 | 551.8 | 3.83 | 1.8 | 551.8 | 3.8 |
| 00:12 | 1.86 | 547.3 | 4.29 | 1.9 | 547.3 | 4.3 |
| 00:11 | 1.81 | 541.5 | 3.42 | 1.8 | 541.5 | 3.4 |
| 00:10 | 1.95 | 544.1 | 2.32 | 2.0 | 544.1 | 2.3 |
| 00:09 | 1.96 | 545.3 | 1.51 | 2.0 | 545.3 | 1.5 |
| 00:08 | 1.87 | 547.6 | 1.06 | 1.9 | 547.6 | 1.1 |
| 00:07 | 1.59 | 550.6 | -0.07 | 1.6 | 550.6 | -0.1 |
| 00:06 | 1.04 | 564.9 | -1.31 | 1.0 | 564.9 | -1.3 |
| 00:05 | 1.07 | 563.1 | -2.26 | 1.1 | 563.1 | -2.3 |
| 00:04 | 1.14 | 563.5 | -2.42 | 1.1 | 563.5 | -2.4 |
| 00:03 | 0.83 | 575.5 | -2.16 | 0.8 | 575.5 | -2.2 |
| 00:02 | 0.96 | 567.0 | -2.59 | 1.0 | 567.0 | -2.6 |
| 00:01 | 0.89 | 572.0 | -2.87 | 0.9 | 572.0 | -2.9 |
| 00:00 | 0.98 | 566.9 | -3.31 | 1.0 | 566.9 | -3.3 |
| 23:59 | 1.71 | 555.7 | -2.56 | 1.7 | 555.7 | -2.6 |
| 23:58 | 1.71 | 556.2 | 1.25 | 1.7 | 556.2 | 1.2 |
| 23:57 | 1.66 | 556.4 | 3.02 | 1.7 | 556.4 | 3.0 |
| 23:56 | 1.47 | 560.6 | 1.66 | 1.5 | 560.6 | 1.7 |
| 23:55 | 0.56 | 579.7 | -4.33 | 0.6 | 579.7 | -4.3 |
| 23:54 | 0.50 | 582.9 | -4.19 | 0.5 | 582.9 | -4.2 |
| 23:53 | 0.65 | 564.4 | -4.01 | 0.6 | 564.4 | -4.0 |
| 23:52 | 0.72 | 563.8 | -3.74 | 0.7 | 563.8 | -3.7 |
| 23:51 | 1.01 | 550.5 | -3.68 | 1.0 | 550.5 | -3.7 |
| 23:50 | 0.88 | 557.1 | -2.86 | 0.9 | 557.1 | -2.9 |
| 23:49 | 0.74 | 550.3 | -2.73 | 0.7 | 550.3 | -2.7 |
| 23:48 | 0.73 | 555.4 | -3.24 | 0.7 | 555.4 | -3.2 |
| 23:47 | 0.62 | 558.8 | -3.47 | 0.6 | 558.8 | -3.5 |
| 23:46 | 0.51 | 562.7 | -3.86 | 0.5 | 562.7 | -3.9 |
| 23:45 | 0.50 | 574.4 | -3.64 | 0.5 | 574.4 | -3.6 |
| 23:44 | 0.51 | 578.3 | -4.12 | 0.5 | 578.3 | -4.1 |
| 23:43 | 0.45 | 582.6 | -3.88 | 0.5 | 582.6 | -3.9 |
| 23:42 | 0.55 | 573.4 | -4.17 | 0.6 | 573.4 | -4.2 |
| 23:41 | 0.57 | 571.5 | -3.96 | 0.6 | 571.5 | -4.0 |
| 23:40 | 0.46 | 580.1 | -4.36 | 0.5 | 580.1 | -4.4 |
| 23:39 | 0.47 | 580.0 | -4.26 | 0.5 | 580.0 | -4.3 |
| 23:38 | 0.57 | 570.9 | -4.12 | 0.6 | 570.9 | -4.1 |
| 23:37 | 0.63 | 559.3 | -3.84 | 0.6 | 559.3 | -3.8 |
| 23:36 | 0.65 | 561.2 | -3.79 | 0.6 | 561.2 | -3.8 |
| 23:35 | 0.78 | 554.9 | -3.63 | 0.8 | 554.9 | -3.6 |
| 23:34 | 0.76 | 553.0 | -3.51 | 0.8 | 553.0 | -3.5 |
| 23:33 | 1.69 | 537.4 | -2.38 | 1.7 | 537.4 | -2.4 |
| 23:32 | 1.51 | 539.1 | -1.16 | 1.5 | 539.1 | -1.2 |
| 23:31 | 1.11 | 550.2 | -1.73 | 1.1 | 550.2 | -1.7 |
| 23:30 | 0.75 | 561.0 | -2.90 | 0.8 | 561.0 | -2.9 |
| 23:29 | 0.69 | 561.2 | -3.30 | 0.7 | 561.2 | -3.3 |
| 23:28 | 0.65 | 564.9 | -3.49 | 0.7 | 564.9 | -3.5 |
| 23:27 | 0.66 | 563.0 | -3.68 | 0.7 | 563.0 | -3.7 |
| 23:26 | 0.68 | 560.3 | -3.40 | 0.7 | 560.3 | -3.4 |
| 23:25 | 1.01 | 552.6 | - | 1.0 | 552.6 | - |
| 23:24 | 0.92 | 553.6 | -2.90 | 0.9 | 553.6 | -2.9 |
| 23:23 | 0.84 | 553.9 | -3.25 | 0.8 | 553.9 | -3.3 |
| 23:22 | 0.95 | 552.3 | -2.98 | 1.0 | 552.3 | -3.0 |
| 23:21 | 0.92 | 553.4 | -2.76 | 0.9 | 553.4 | -2.8 |
| 23:20 | 1.00 | 552.2 | -2.35 | 1.0 | 552.2 | -2.3 |
| 23:19 | 1.64 | 547.3 | -0.82 | 1.6 | 547.3 | -0.8 |
| 23:18 | 1.17 | 546.1 | -1.55 | 1.2 | 546.1 | -1.6 |
| 23:17 | 1.04 | 551.5 | -2.16 | 1.0 | 551.5 | -2.2 |
| 23:16 | 0.84 | 558.1 | -2.42 | 0.8 | 558.1 | -2.4 |
| 23:15 | 0.74 | 559.3 | -2.84 | 0.7 | 559.3 | -2.8 |
| 23:14 | 0.61 | 573.8 | -3.82 | 0.6 | 573.8 | -3.8 |
Built 2026-01-24 01:14 from source
| Solar wind parameters of the latest hour by NOAA | |||
|---|---|---|---|
| parameter | min | max | mean |
| IMF Bz [nT] | -3.3 | 6.4 | 3.7 |
| velocity [km/s] | 537.0 | 575.5 | 553.7 |
| density [cm-3] | 0.8 | 2.6 | 2.0 |
| Geomagnetic activity (RX [nT]) | ||
|---|---|---|
| site | latest hour | next hour (RXmin, RXmax) |
| Kevo (KEV) | 189 | 14 | 386 |
| Maasi (MAS) | 178 | 12 | 414 |
| Kilpisjärvi (KIL) | 187 | 14 | 406 |
| Ivalo (IVA) | 190 | 14 | 361 |
| Muonio (MUO) | 177 | 11 | 402 |
| Sodankylä (SOD) | 135 | 11 | 273 |
| Pello (PEL) | 136 | 9 | 288 |
| Oulujärvi (OUJ) | 118 | 5 | 149 |
| Mekrijärvi (MEK) | 55 | 4 | 24 |
| Hankasalmi (HAN) | 71 | 3 | 86 |
| Nurmijärvi (NUR) | - | 4 | 49 |
| Tartu (TAR) | 14 | 3 | 17 |
| low | increased | moderate | high | very high |
Short explanation of the method
AurorasNow! (Finnish Meteorological Institute)Built 2026-01-24 01:02 from source
Issue Time: 2026-01-23 20:56 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5233
Valid From: 2026-01-22 22:24 UTC
Now Valid Until: 2026-01-24 03:00 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: 5233
Valid From: 2026-01-22 22:24 UTC
Now Valid Until: 2026-01-24 03:00 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: 2026-01-23 20:56 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2181
Valid From: 2026-01-22 23:25 UTC
Now Valid Until: 2026-01-24 03:00 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: 2181
Valid From: 2026-01-22 23:25 UTC
Now Valid Until: 2026-01-24 03:00 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: 2026-01-23 14:56 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5232
Valid From: 2026-01-22 22:24 UTC
Now Valid Until: 2026-01-23 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: 5232
Valid From: 2026-01-22 22:24 UTC
Now Valid Until: 2026-01-23 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: 2026-01-23 14:56 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2180
Valid From: 2026-01-22 23:25 UTC
Now Valid Until: 2026-01-23 21:00 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: 2180
Valid From: 2026-01-22 23:25 UTC
Now Valid Until: 2026-01-23 21:00 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: 2026-01-23 09:03 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5231
Valid From: 2026-01-22 22:24 UTC
Now Valid Until: 2026-01-23 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: 5231
Valid From: 2026-01-22 22:24 UTC
Now Valid Until: 2026-01-23 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: 2026-01-23 08:54 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2179
Valid From: 2026-01-22 23:25 UTC
Now Valid Until: 2026-01-23 15:00 UTC
Warning Condition: Onset
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: 2179
Valid From: 2026-01-22 23:25 UTC
Now Valid Until: 2026-01-23 15:00 UTC
Warning Condition: Onset
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: 2026-01-23 04:59 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3607
Begin Time: 2026-01-21 09:50 UTC
Yesterday Maximum 2MeV Flux: 5365 pfu
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3607
Begin Time: 2026-01-21 09:50 UTC
Yesterday Maximum 2MeV Flux: 5365 pfu
Issue Time: 2026-01-23 00:00 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5230
Valid From: 2026-01-22 22:24 UTC
Now Valid Until: 2026-01-23 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: 5230
Valid From: 2026-01-22 22:24 UTC
Now Valid Until: 2026-01-23 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: 2026-01-22 23:39 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2026-01-22 23:39 UTC
Valid To: 2026-01-23 09:00 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: 2026-01-22 23:39 UTC
Valid To: 2026-01-23 09:00 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: 2026-01-22 23:29 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026-01-22 23:27 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: 2026-01-22 23:27 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: 2026-01-22 23:25 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2026-01-22 23:25 UTC
Valid To: 2026-01-23 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: 2026-01-22 23:25 UTC
Valid To: 2026-01-23 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: 2026-01-22 23:00 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2026-01-22 22:54 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: 2026-01-22 22:54 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: 2026-01-22 22:24 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026-01-22 22:24 UTC
Valid To: 2026-01-23 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: 2026-01-22 22:24 UTC
Valid To: 2026-01-23 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: 2026-01-22 17:54 UTC
SUMMARY: Proton Event 10MeV Integral Flux exceeded 10pfu
Begin Time: 2026-01-18 22:55 UTC
Maximum Time: 2026-01-19 19:15 UTC
End Time: 2026-01-22 05:45 UTC
Maximum 10MeV Flux: 37000 pfu
NOAA Scale: S4 - Severe
SUMMARY: Proton Event 10MeV Integral Flux exceeded 10pfu
Begin Time: 2026-01-18 22:55 UTC
Maximum Time: 2026-01-19 19:15 UTC
End Time: 2026-01-22 05:45 UTC
Maximum 10MeV Flux: 37000 pfu
NOAA Scale: S4 - Severe
Issue Time: 2026-01-22 11:03 UTC
EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 622
Valid From: 2026-01-22 01:24 UTC
Now Valid Until: 2026-01-22 18:00 UTC
Warning Condition: Onset
Predicted NOAA Scale: S1 - Minor
EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 622
Valid From: 2026-01-22 01:24 UTC
Now Valid Until: 2026-01-22 18:00 UTC
Warning Condition: Onset
Predicted NOAA Scale: S1 - Minor
Issue Time: 2026-01-22 05:37 UTC
ALERT: Proton Event 10MeV Integral Flux exceeded 10pfu
Begin Time: 2026-01-22 05:20 UTC
NOAA Scale: S1 - Minor
ALERT: Proton Event 10MeV Integral Flux exceeded 10pfu
Begin Time: 2026-01-22 05:20 UTC
NOAA Scale: S1 - Minor
Issue Time: 2026-01-22 04:59 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3606
Begin Time: 2026-01-21 09:50 UTC
Yesterday Maximum 2MeV Flux: 3332 pfu
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3606
Begin Time: 2026-01-21 09:50 UTC
Yesterday Maximum 2MeV Flux: 3332 pfu
Issue Time: 2026-01-22 01:24 UTC
WARNING: Proton 10MeV Integral Flux above 10pfu expected
Valid From: 2026-01-22 01:24 UTC
Valid To: 2026-01-22 12:00 UTC
Warning Condition: Onset
Predicted NOAA Scale: S1 - Minor
WARNING: Proton 10MeV Integral Flux above 10pfu expected
Valid From: 2026-01-22 01:24 UTC
Valid To: 2026-01-22 12:00 UTC
Warning Condition: Onset
Predicted NOAA Scale: S1 - Minor
Issue Time: 2026-01-21 10:56 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5228
Valid From: 2026-01-16 02:54 UTC
Now Valid Until: 2026-01-22 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: 5228
Valid From: 2026-01-16 02:54 UTC
Now Valid Until: 2026-01-22 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: 2026-01-21 10:56 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2177
Valid From: 2026-01-19 19:02 UTC
Now Valid Until: 2026-01-22 15:00 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: 2177
Valid From: 2026-01-19 19:02 UTC
Now Valid Until: 2026-01-22 15:00 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: 2026-01-21 10:56 UTC
EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 636
Valid From: 2026-01-19 19:02 UTC
Now Valid Until: 2026-01-21 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: 636
Valid From: 2026-01-19 19:02 UTC
Now Valid Until: 2026-01-21 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: 2026-01-21 10:56 UTC
EXTENDED WARNING: Geomagnetic K-index of 7 or greater expected
Extension to Serial Number: 143
Valid From: 2026-01-19 19:02 UTC
Now Valid Until: 2026-01-21 18:00 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: 143
Valid From: 2026-01-19 19:02 UTC
Now Valid Until: 2026-01-21 18:00 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: 2026-01-21 10:37 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2026-01-21 10:37 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: 2026-01-21 10:37 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: 2026-01-21 10:06 UTC
ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2026-01-21 09:50 UTC
Station: GOES19
ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2026-01-21 09:50 UTC
Station: GOES19
Issue Time: 2026-01-21 09:48 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026-01-21 09:48 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: 2026-01-21 09:48 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: 2026-01-21 08:53 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2026-01-21 08:52 UTC
Synoptic Period: 0600-0900 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: 2026-01-21 08:52 UTC
Synoptic Period: 0600-0900 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: 2026-01-21 07:31 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day
Jan 22: G1 (Minor) Jan 23: None (Below G1) Jan 24: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
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
Jan 22: G1 (Minor) Jan 23: None (Below G1) Jan 24: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
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: 2026-01-21 07:27 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2026-01-21 07:23 UTC
Synoptic Period: 0600-0900 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: 2026-01-21 07:23 UTC
Synoptic Period: 0600-0900 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: 2026-01-21 07:10 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026-01-21 07:04 UTC
Synoptic Period: 0600-0900 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: 2026-01-21 07:04 UTC
Synoptic Period: 0600-0900 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: 2026-01-21 05:11 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2026-01-21 05:07 UTC
Synoptic Period: 0300-0600 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: 2026-01-21 05:07 UTC
Synoptic Period: 0300-0600 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: 2026-01-21 04:47 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2026-01-21 04:39 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: 2026-01-21 04:39 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: 2026-01-21 03:54 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026-01-21 03:49 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: 2026-01-21 03:49 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: 2026-01-21 02:20 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2026-01-21 02:13 UTC
Synoptic Period: 0000-0300 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: 2026-01-21 02:13 UTC
Synoptic Period: 0000-0300 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: 2026-01-21 02:01 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5227
Valid From: 2026-01-16 02:54 UTC
Now Valid Until: 2026-01-21 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: 5227
Valid From: 2026-01-16 02:54 UTC
Now Valid Until: 2026-01-21 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: 2026-01-21 02:01 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2176
Valid From: 2026-01-19 19:02 UTC
Now Valid Until: 2026-01-21 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: 2176
Valid From: 2026-01-19 19:02 UTC
Now Valid Until: 2026-01-21 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: 2026-01-21 02:01 UTC
EXTENDED WARNING: Geomagnetic K-index of 7 or greater expected
Extension to Serial Number: 142
Valid From: 2026-01-19 19:02 UTC
Now Valid Until: 2026-01-21 12:00 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: 142
Valid From: 2026-01-19 19:02 UTC
Now Valid Until: 2026-01-21 12:00 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: 2026-01-21 02:01 UTC
EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 635
Valid From: 2026-01-19 19:02 UTC
Now Valid Until: 2026-01-21 15:00 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: 635
Valid From: 2026-01-19 19:02 UTC
Now Valid Until: 2026-01-21 15:00 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: 2026-01-21 01:55 UTC
SUMMARY: Proton Event 10MeV Integral Flux exceeded 100pfu
Begin Time: 2026-01-19 04:40 UTC
Maximum Time: 2026-01-19 19:15 UTC
End Time: 2026-01-20 13:35 UTC
Maximum 10MeV Flux: 37000 pfu
NOAA Scale: S4 - Severe
SUMMARY: Proton Event 10MeV Integral Flux exceeded 100pfu
Begin Time: 2026-01-19 04:40 UTC
Maximum Time: 2026-01-19 19:15 UTC
End Time: 2026-01-20 13:35 UTC
Maximum 10MeV Flux: 37000 pfu
NOAA Scale: S4 - Severe
Issue Time: 2026-01-21 00:35 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2026-01-21 00:32 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: 2026-01-21 00:32 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: 2026-01-21 00:28 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026-01-21 00:13 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: 2026-01-21 00:13 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: 2026-01-21 00:08 UTC
ALERT: Geomagnetic K-index of 8, 9-
Threshold Reached: 2026-01-20 23:59 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
ALERT: Geomagnetic K-index of 8, 9-
Threshold Reached: 2026-01-20 23:59 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
Issue Time: 2026-01-20 23:55 UTC
EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 620
Valid From: 2026-01-18 21:30 UTC
Now Valid Until: 2026-01-21 23:59 UTC
Warning Condition: Persistence
Predicted NOAA Scale: S1 - Minor
EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 620
Valid From: 2026-01-18 21:30 UTC
Now Valid Until: 2026-01-21 23:59 UTC
Warning Condition: Persistence
Predicted NOAA Scale: S1 - Minor
Issue Time: 2026-01-20 22:42 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2026-01-20 22:43 UTC
Synoptic Period: 2100-2400 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: 2026-01-20 22:43 UTC
Synoptic Period: 2100-2400 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: 2026-01-20 22:33 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2026-01-20 22:30 UTC
Synoptic Period: 2100-2400 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: 2026-01-20 22:30 UTC
Synoptic Period: 2100-2400 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: 2026-01-20 21:35 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026-01-20 21:34 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: 2026-01-20 21:34 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.
Built 2026-01-23 20:58 from source
