SeadedLast update:
| Time UTC | DSCOVR | ACE | ||||
|---|---|---|---|---|---|---|
| Solar Wind | GSM | Solar Wind | GSM | |||
| Proton Density | Bulk Speed | Bz | Proton Density | Bulk Speed | Bz | |
| 08:34 | - | - | - | - | - | - |
| 08:33 | - | - | - | - | - | - |
| 08:32 | - | - | - | - | - | - |
| 08:31 | 2.01 | 661.2 | - | - | - | - |
| 08:30 | 1.64 | 653.2 | - | - | - | - |
| 08:29 | 1.86 | 684.2 | -5.78 | - | - | - |
| 08:28 | 2.83 | 680.6 | -5.15 | 2.8 | 679.2 | -5.1 |
| 08:27 | 3.06 | 684.0 | -3.54 | 2.7 | 656.1 | -3.5 |
| 08:26 | 1.00 | 616.7 | -1.40 | 1.0 | 616.2 | -1.4 |
| 08:25 | 1.89 | 654.5 | 0.41 | 1.9 | 654.5 | 0.4 |
| 08:24 | 2.07 | 641.3 | 4.87 | 2.1 | 641.3 | 4.9 |
| 08:23 | 2.30 | 650.8 | 3.74 | 2.3 | 650.8 | 3.7 |
| 08:22 | 2.36 | 654.2 | 4.57 | 2.4 | 654.2 | 4.6 |
| 08:21 | 2.17 | 666.5 | 4.82 | 2.2 | 666.5 | 4.8 |
| 08:20 | 2.19 | 660.4 | 5.02 | 2.2 | 660.4 | 5.0 |
| 08:19 | 2.17 | 653.2 | 4.57 | 2.2 | 653.2 | 4.6 |
| 08:18 | 1.98 | 628.2 | 3.98 | 2.0 | 628.2 | 4.0 |
| 08:17 | 2.05 | 621.4 | 4.36 | 2.0 | 621.4 | 4.4 |
| 08:16 | 2.17 | 646.4 | 4.05 | 2.2 | 646.4 | 4.0 |
| 08:15 | 1.82 | 642.2 | 2.30 | 1.8 | 642.2 | 2.3 |
| 08:14 | 2.58 | 675.5 | -0.27 | 2.6 | 675.5 | -0.3 |
| 08:13 | 2.24 | 666.9 | 1.67 | 2.2 | 666.9 | 1.7 |
| 08:12 | 1.93 | 721.2 | 6.35 | 1.9 | 720.0 | 6.4 |
| 08:11 | 2.46 | 711.6 | 6.53 | 2.0 | 689.2 | 6.5 |
| 08:10 | 2.32 | 716.9 | 7.01 | 2.3 | 716.5 | 7.0 |
| 08:09 | 1.68 | 654.9 | 6.74 | 1.7 | 654.9 | 6.7 |
| 08:08 | 2.27 | 697.4 | 7.09 | 2.3 | 697.4 | 7.1 |
| 08:07 | 2.12 | 695.0 | 7.16 | 2.1 | 695.0 | 7.2 |
| 08:06 | 2.65 | 715.5 | 7.29 | 2.7 | 715.5 | 7.3 |
| 08:05 | 1.99 | 696.5 | 7.22 | 2.0 | 696.5 | 7.2 |
| 08:04 | 1.87 | 697.5 | 6.65 | 1.9 | 697.5 | 6.7 |
| 08:03 | 2.18 | 709.9 | 6.85 | 2.2 | 709.9 | 6.9 |
| 08:02 | 2.25 | 711.5 | 6.99 | 2.3 | 711.5 | 7.0 |
| 08:01 | 2.32 | 715.1 | 7.02 | 2.3 | 715.1 | 7.0 |
| 08:00 | 2.25 | 712.3 | 7.49 | 2.3 | 712.3 | 7.5 |
| 07:59 | 2.03 | 706.6 | 7.07 | 2.0 | 706.6 | 7.1 |
| 07:58 | 2.08 | 734.9 | 7.36 | 2.1 | 734.9 | 7.4 |
| 07:57 | 1.92 | 734.1 | 7.12 | 1.9 | 734.1 | 7.1 |
| 07:56 | 1.99 | 712.1 | 6.25 | 2.0 | 713.1 | 6.2 |
| 07:55 | 1.87 | 676.6 | 6.87 | 2.2 | 696.1 | 6.9 |
| 07:54 | 1.73 | 680.8 | 5.76 | 1.7 | 680.8 | 5.8 |
| 07:53 | 2.21 | 699.6 | 5.76 | 2.2 | 699.6 | 5.8 |
| 07:52 | 1.75 | 695.5 | 6.30 | 1.7 | 695.5 | 6.3 |
| 07:51 | 1.66 | 688.4 | 5.70 | 1.7 | 688.4 | 5.7 |
| 07:50 | 1.81 | 675.9 | 4.53 | 1.8 | 675.9 | 4.5 |
| 07:49 | 1.87 | 671.6 | 5.54 | 1.9 | 671.6 | 5.5 |
| 07:48 | 2.08 | 698.5 | 2.78 | 2.1 | 698.5 | 2.8 |
| 07:47 | 1.99 | 689.7 | 0.89 | 2.0 | 689.7 | 0.9 |
| 07:46 | 1.87 | 677.3 | 2.17 | 1.9 | 677.3 | 2.2 |
| 07:45 | 2.01 | 677.2 | 4.57 | 2.0 | 677.2 | 4.6 |
| 07:44 | 2.19 | 688.3 | 2.67 | 2.2 | 688.3 | 2.7 |
| 07:43 | 1.82 | 680.1 | 3.26 | 1.8 | 680.1 | 3.3 |
| 07:42 | 1.67 | 643.4 | 4.85 | 1.7 | 643.4 | 4.9 |
| 07:41 | 1.88 | 678.1 | 5.02 | 2.5 | 673.1 | 5.0 |
| 07:40 | 4.97 | 636.1 | 4.28 | 5.0 | 636.1 | 4.3 |
| 07:39 | 2.76 | 649.5 | 2.86 | 2.8 | 649.5 | 2.9 |
| 07:38 | 2.33 | 611.2 | -2.85 | 2.3 | 611.2 | -2.9 |
| 07:37 | 2.93 | 661.3 | -4.41 | 2.9 | 661.3 | -4.4 |
| 07:36 | 3.10 | 690.0 | -5.15 | 3.1 | 690.0 | -5.2 |
| 07:35 | 2.69 | 674.5 | -5.11 | 2.7 | 674.5 | -5.1 |
| 07:34 | 1.96 | 640.3 | -3.16 | 2.0 | 640.3 | -3.2 |
| 07:33 | 2.68 | 667.3 | -3.46 | 2.7 | 667.3 | -3.5 |
| 07:32 | 3.20 | 674.5 | -4.23 | 3.2 | 674.5 | -4.2 |
| 07:31 | 3.15 | 662.1 | -2.83 | 3.2 | 662.1 | -2.8 |
| 07:30 | 2.48 | 635.3 | -2.53 | 2.5 | 635.3 | -2.5 |
| 07:29 | 2.43 | 633.3 | -1.20 | 2.4 | 633.3 | -1.2 |
| 07:28 | 3.47 | 677.8 | -0.10 | 3.5 | 677.8 | -0.1 |
| 07:27 | 3.18 | 674.9 | -0.02 | 2.5 | 651.8 | -0.0 |
| 07:26 | 2.94 | 662.6 | 0.11 | 0.5 | 578.0 | 0.1 |
| 07:25 | 2.33 | 618.6 | 0.81 | 2.3 | 618.6 | 0.8 |
| 07:24 | 3.09 | 668.5 | 0.28 | 3.1 | 668.5 | 0.3 |
| 07:23 | 2.93 | 648.6 | 0.78 | 2.9 | 648.6 | 0.8 |
| 07:22 | 5.21 | 681.6 | 1.34 | 5.2 | 681.6 | 1.3 |
| 07:21 | 2.64 | 610.2 | 1.86 | 2.6 | 610.2 | 1.9 |
| 07:20 | 2.65 | 647.6 | -0.05 | 2.7 | 647.6 | -0.1 |
| 07:19 | 2.67 | 648.4 | 0.97 | 2.7 | 648.4 | 1.0 |
| 07:18 | 2.16 | 689.7 | 1.04 | 2.2 | 689.7 | 1.0 |
| 07:17 | 1.70 | 720.0 | 3.90 | 1.7 | 720.0 | 3.9 |
| 07:16 | 1.56 | 727.1 | 7.53 | 1.6 | 727.1 | 7.5 |
| 07:15 | 1.92 | 729.3 | 7.73 | 1.9 | 729.3 | 7.7 |
| 07:14 | 1.06 | 729.3 | 7.46 | 1.1 | 729.3 | 7.5 |
| 07:13 | 2.07 | 705.6 | 7.72 | 2.1 | 705.6 | 7.7 |
| 07:12 | 1.85 | 649.0 | 6.88 | 1.9 | 649.0 | 6.9 |
| 07:11 | 2.00 | 684.7 | 6.79 | 2.0 | 684.7 | 6.8 |
| 07:10 | 3.08 | 711.9 | 4.96 | 3.1 | 711.9 | 5.0 |
| 07:09 | 4.89 | 677.1 | 5.83 | 4.9 | 677.1 | 5.8 |
| 07:08 | 2.24 | 634.1 | 3.45 | 2.2 | 634.1 | 3.5 |
| 07:07 | 3.02 | 655.1 | 0.56 | 3.0 | 655.1 | 0.6 |
| 07:06 | 3.56 | 665.0 | -1.36 | 3.6 | 665.0 | -1.4 |
| 07:05 | 2.88 | 661.2 | -0.90 | 2.9 | 661.2 | -0.9 |
| 07:04 | 4.80 | 649.0 | -1.73 | 4.8 | 649.0 | -1.7 |
| 07:03 | 3.42 | 652.2 | -2.01 | 3.4 | 652.2 | -2.0 |
| 07:02 | 3.12 | 671.5 | -2.79 | 3.1 | 671.5 | -2.8 |
| 07:01 | 3.50 | 670.2 | -4.16 | 3.5 | 670.2 | -4.2 |
| 07:00 | - | - | -3.98 | - | - | -4.0 |
| 06:59 | - | - | -4.31 | - | - | -4.3 |
| 06:58 | 3.08 | 653.9 | -0.70 | 3.1 | 653.9 | -0.7 |
| 06:57 | 3.19 | 656.9 | -1.38 | 3.2 | 656.9 | -1.4 |
| 06:56 | 3.08 | 663.2 | -1.70 | 3.1 | 663.2 | -1.7 |
| 06:55 | 2.52 | 654.1 | -2.78 | 2.5 | 654.1 | -2.8 |
| 06:54 | 1.57 | 626.9 | -3.68 | 1.6 | 626.9 | -3.7 |
| 06:53 | 3.28 | 657.4 | -2.39 | 3.3 | 657.4 | -2.4 |
| 06:52 | 3.13 | 653.3 | -2.07 | 3.1 | 653.3 | -2.1 |
| 06:51 | 2.63 | 640.9 | -3.41 | 2.6 | 640.9 | -3.4 |
| 06:50 | 1.28 | 608.7 | -2.06 | 1.3 | 608.7 | -2.1 |
| 06:49 | 3.04 | 682.3 | -2.23 | 3.0 | 682.3 | -2.2 |
| 06:48 | 2.70 | 690.9 | -5.31 | 2.7 | 690.9 | -5.3 |
| 06:47 | 2.58 | 671.5 | -6.39 | 2.6 | 671.5 | -6.4 |
| 06:46 | 1.92 | 620.4 | -5.59 | 1.9 | 620.4 | -5.6 |
| 06:45 | 2.59 | 646.3 | - | 2.6 | 646.3 | - |
| 06:44 | 2.88 | 672.4 | - | 2.9 | 672.4 | - |
| 06:43 | 2.74 | 674.2 | -4.92 | 2.7 | 674.2 | -4.9 |
| 06:42 | 1.45 | 637.8 | -6.40 | 1.4 | 637.8 | -6.4 |
| 06:41 | 1.95 | 660.8 | -7.11 | 2.0 | 660.8 | -7.1 |
| 06:40 | 2.75 | 700.6 | -7.14 | 2.7 | 700.6 | -7.1 |
| 06:39 | 2.07 | 679.9 | -6.92 | 2.1 | 679.9 | -6.9 |
| 06:38 | 0.50 | 607.1 | -6.90 | 0.5 | 607.1 | -6.9 |
| 06:37 | 1.94 | 655.3 | -7.47 | 1.9 | 655.3 | -7.5 |
| 06:36 | 2.78 | 759.0 | -7.17 | 2.8 | 758.7 | -7.2 |
| 06:35 | 2.71 | 731.1 | -7.84 | 2.6 | 726.1 | -7.8 |
Built 2026-05-16 08:35 from source
| Solar wind parameters of the latest hour by NOAA | |||
|---|---|---|---|
| parameter | min | max | mean |
| IMF Bz [nT] | -5.2 | 7.5 | 3.6 |
| velocity [km/s] | 611.2 | 734.9 | 676.6 |
| density [cm-3] | 1.0 | 5.0 | 2.2 |
| Geomagnetic activity (RX [nT]) | ||
|---|---|---|
| site | latest hour | next hour (RXmin, RXmax) |
| Kevo (KEV) | 152 | 17 | 159 |
| Maasi (MAS) | 157 | 13 | 169 |
| Kilpisjärvi (KIL) | 177 | 20 | 152 |
| Ivalo (IVA) | 145 | 15 | 91 |
| Muonio (MUO) | 158 | 14 | 156 |
| Sodankylä (SOD) | - | 13 | 132 |
| Pello (PEL) | 137 | 13 | 131 |
| Oulujärvi (OUJ) | 90 | 11 | 121 |
| Mekrijärvi (MEK) | 56 | 7 | 34 |
| Hankasalmi (HAN) | 50 | 8 | 85 |
| Nurmijärvi (NUR) | - | 9 | 78 |
| Tartu (TAR) | 31 | 7 | 22 |
| low | increased | moderate | high | very high |
Short explanation of the method
AurorasNow! (Finnish Meteorological Institute)Built 2026-05-16 08:32 from source
Issue Time: 2026-05-16 05:56 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026-05-16 05:54 UTC
Synoptic Period: 0300-0600
Active Warning: YES
Noaa Scale: G1 - Minor
Comment
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: 2026-05-16 05:54 UTC
Synoptic Period: 0300-0600
Active Warning: YES
Noaa Scale: G1 - Minor
Comment
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: 2026-05-15 23:56 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2234
Valid From: 2026-05-15T13:05:00
Now Valid Until: 2026-05-16 09:00
Warning Condition: Persistence
Extended 2026-05-15 23: 55 by Forecaster User 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.
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2234
Valid From: 2026-05-15T13:05:00
Now Valid Until: 2026-05-16 09:00
Warning Condition: Persistence
Extended 2026-05-15 23: 55 by Forecaster User 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: 2026-05-15 22:15 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2026-05-15 22:15 UTC
Synoptic Period: 2100-2400
Active Warning: YES
Noaa Scale: G2 - Moderate
Comment
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: 2026-05-15 22:15 UTC
Synoptic Period: 2100-2400
Active Warning: YES
Noaa Scale: G2 - Moderate
Comment
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: 2026-05-15 22:02 UTC
WARNING: Geomagnetic K-index of 6 expected
Valid From: 2026-05-15 22:01 UTC
Valid To: 2026-05-16 03:00 UTC
Warning Conditions: Onset
Noaa Scale: G2 - Moderate
Comment
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: 2026-05-15 22:01 UTC
Valid To: 2026-05-16 03:00 UTC
Warning Conditions: Onset
Noaa Scale: G2 - Moderate
Comment
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: 2026-05-15 17:18 UTC
ALERT: Type II Radio Emission
Begin Time: 2026-05-15 16:16 UTC
Estimate Velocity: 529 km/s
Comment
ALERT: Type II Radio Emission
Begin Time: 2026-05-15 16:16 UTC
Estimate Velocity: 529 km/s
Comment
Issue Time: 2026-05-15 16:07 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026-05-15 16:06 UTC
Synoptic Period: 1500-1800
Active Warning: YES
Noaa Scale: G1 - Minor
Comment
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: 2026-05-15 16:06 UTC
Synoptic Period: 1500-1800
Active Warning: YES
Noaa Scale: G1 - Minor
Comment
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: 2026-05-15 14:50 UTC
WARNING: Geomagnetic K-index of 6 expected
Valid From: 2026-05-15 14:49 UTC
Valid To: 2026-05-15 21:00 UTC
Warning Conditions: Onset
Noaa Scale: G2 - Moderate
Comment
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: 2026-05-15 14:49 UTC
Valid To: 2026-05-15 21:00 UTC
Warning Conditions: Onset
Noaa Scale: G2 - Moderate
Comment
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: 2026-05-15 13:45 UTC
ALERT: Type II Radio Emission
Begin Time: 2026-05-15 13:44 UTC
Estimate Velocity: 347 km/s
Comment
ALERT: Type II Radio Emission
Begin Time: 2026-05-15 13:44 UTC
Estimate Velocity: 347 km/s
Comment
Issue Time: 2026-05-15 13:27 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026-05-15 13:26 UTC
Synoptic Period: 1200-1500
Active Warning: YES
Noaa Scale: G1 - Minor
Comment
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: 2026-05-15 13:26 UTC
Synoptic Period: 1200-1500
Active Warning: YES
Noaa Scale: G1 - Minor
Comment
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: 2026-05-15 13:07 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2026-05-15 13:05 UTC
Valid To: 2026-05-15 23:59 UTC
Warning Conditions: Onset
Noaa Scale: G1 - Minor
Comment
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: 2026-05-15 13:05 UTC
Valid To: 2026-05-15 23:59 UTC
Warning Conditions: Onset
Noaa Scale: G1 - Minor
Comment
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: 2026-05-15 13:09 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5337
Valid From: 2026-05-13T20:26:00
Now Valid Until: 2026-05-16 12:00
Warning Condition: Persistence
Extended 2026-05-15 13: 09 by Forecaster User
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: 5337
Valid From: 2026-05-13T20:26:00
Now Valid Until: 2026-05-16 12:00
Warning Condition: Persistence
Extended 2026-05-15 13: 09 by Forecaster User
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
Issue Time: 2026-05-15 13:00 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2026-05-15 13:00 UTC
Synoptic Period: 1200-1500
Active Warning: YES
Comment
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: 2026-05-15 13:00 UTC
Synoptic Period: 1200-1500
Active Warning: YES
Comment
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
Issue Time: 2026-05-15 12:25 UTC
ALERT: Type II Radio Emission
Begin Time: 2026-05-15 12:25 UTC
Estimate Velocity: 486 km/s
Comment
ALERT: Type II Radio Emission
Begin Time: 2026-05-15 12:25 UTC
Estimate Velocity: 486 km/s
Comment
Issue Time: 2026-05-15 11:58 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026-05-15 11:57 UTC
Valid To: 2026-05-16 00:00 UTC
Warning Conditions: Onset
Comment
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: 2026-05-15 11:57 UTC
Valid To: 2026-05-16 00:00 UTC
Warning Conditions: Onset
Comment
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
Issue Time: 2026-05-14 08:53 UTC
WATCH: Geomagnetic Storm Category G2 Predicted
Highest Storm Level Predicted by Day
May 15: G2 (Moderate) May 16: G1 (Minor) May 17: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment: included the G1 watch for day3 (17 May)
included the G1 watch for day3 (17 May)
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
May 15: G2 (Moderate) May 16: G1 (Minor) May 17: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment: included the G1 watch for day3 (17 May)
included the G1 watch for day3 (17 May)
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: 2026-05-13 20:27 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026-05-13 20:26 UTC
Valid To: 2026-05-14 06:00 UTC
Warning Conditions: Onset
Comment
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: 2026-05-13 20:26 UTC
Valid To: 2026-05-14 06:00 UTC
Warning Conditions: Onset
Comment
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
Issue Time: 2026-05-13 09:07 UTC
WATCH: Geomagnetic Storm Category G2 Predicted
Highest Storm Level Predicted by Day
May 14: None (Below G1) May 15: G2 (Moderate) May 16: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment
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
May 14: None (Below G1) May 15: G2 (Moderate) May 16: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment
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.
Built 2026-05-16 05:58 from source
