SeadedLast update:
| Time UTC | DSCOVR | ACE | ||||
|---|---|---|---|---|---|---|
| Solar Wind | GSM | Solar Wind | GSM | |||
| Proton Density | Bulk Speed | Bz | Proton Density | Bulk Speed | Bz | |
| 09:18 | - | - | - | - | - | - |
| 09:17 | - | - | - | - | - | - |
| 09:16 | - | - | - | - | - | - |
| 09:15 | - | - | - | - | - | - |
| 09:14 | - | - | - | - | - | - |
| 09:13 | - | - | - | - | - | - |
| 09:12 | - | - | - | - | - | - |
| 09:11 | - | - | - | - | - | - |
| 09:10 | - | - | - | - | - | - |
| 09:09 | - | - | - | - | - | - |
| 09:08 | - | - | - | - | - | - |
| 09:07 | - | - | - | 0.7 | 440.4 | 3.6 |
| 09:06 | - | - | - | 0.7 | 428.1 | 3.4 |
| 09:05 | - | - | - | 0.6 | 426.1 | 2.9 |
| 09:04 | - | - | - | 0.6 | 427.2 | 2.8 |
| 09:03 | - | - | - | 0.8 | 430.4 | 2.9 |
| 09:02 | - | - | - | 0.8 | 433.5 | 2.6 |
| 09:01 | - | - | - | 0.6 | 428.0 | 2.8 |
| 09:00 | - | - | - | 0.9 | 446.4 | 2.9 |
| 08:59 | - | - | - | 0.9 | 447.0 | - |
| 08:58 | - | - | - | 0.4 | 411.6 | 2.7 |
| 08:57 | - | - | - | 0.6 | 425.0 | 3.0 |
| 08:56 | - | - | - | 0.7 | 431.0 | 3.2 |
| 08:55 | - | - | - | 0.7 | 432.6 | 3.3 |
| 08:54 | - | - | - | 0.7 | 424.1 | 3.3 |
| 08:53 | - | - | - | 0.7 | 426.3 | 3.3 |
| 08:52 | - | - | - | 0.8 | 436.0 | 3.1 |
| 08:51 | - | - | - | 0.8 | 434.9 | 3.1 |
| 08:50 | - | - | - | 0.8 | 430.1 | 3.2 |
| 08:49 | - | - | - | 0.8 | 429.0 | 2.8 |
| 08:48 | - | - | - | 0.8 | 435.6 | 3.0 |
| 08:47 | - | - | - | 0.8 | 435.9 | 3.0 |
| 08:46 | - | - | - | 0.8 | 440.5 | 3.2 |
| 08:45 | - | - | - | 0.7 | 418.9 | 3.2 |
| 08:44 | - | - | - | 0.8 | 438.5 | 3.2 |
| 08:43 | - | - | - | 0.9 | 438.0 | 3.5 |
| 08:42 | - | - | - | 0.9 | 442.0 | 3.5 |
| 08:41 | - | - | - | 0.6 | 421.1 | 3.4 |
| 08:40 | - | - | - | 0.8 | 431.3 | 3.3 |
| 08:39 | - | - | - | 0.9 | 441.1 | 3.4 |
| 08:38 | - | - | - | 1.0 | 443.5 | 3.3 |
| 08:37 | - | - | - | 0.7 | 429.7 | 3.5 |
| 08:36 | - | - | - | 0.6 | 426.9 | 3.5 |
| 08:35 | - | - | - | 0.9 | 441.4 | 3.4 |
| 08:34 | - | - | - | 0.9 | 439.1 | 3.5 |
| 08:33 | - | - | - | 0.8 | 432.2 | 3.5 |
| 08:32 | - | - | - | 0.6 | 420.2 | 3.7 |
| 08:31 | - | - | - | 0.9 | 440.0 | 3.8 |
| 08:30 | - | - | - | 1.0 | 443.1 | - |
| 08:29 | - | - | - | 0.9 | 440.2 | - |
| 08:28 | - | - | - | 0.5 | 419.4 | 3.5 |
| 08:27 | - | - | - | 0.5 | 421.5 | 3.8 |
| 08:26 | - | - | - | 0.5 | 421.8 | 3.9 |
| 08:25 | - | - | - | 0.6 | 421.3 | 3.9 |
| 08:24 | - | - | - | 0.7 | 431.5 | 3.9 |
| 08:23 | - | - | - | 0.8 | 437.6 | 3.9 |
| 08:22 | - | - | - | 0.9 | 443.5 | 4.0 |
| 08:21 | - | - | - | 0.8 | 433.3 | 4.0 |
| 08:20 | - | - | - | 0.7 | 427.0 | 4.1 |
| 08:19 | - | - | - | 0.8 | 441.0 | 3.9 |
| 08:18 | - | - | - | 0.9 | 445.8 | 3.9 |
| 08:17 | - | - | - | 0.8 | 435.8 | - |
| 08:16 | - | - | - | 0.7 | 425.8 | - |
| 08:15 | - | - | - | 0.8 | 440.2 | - |
| 08:14 | - | - | - | 1.0 | 448.2 | - |
| 08:13 | - | - | - | 0.8 | 439.8 | 4.2 |
| 08:12 | - | - | - | 0.4 | 407.1 | 4.3 |
| 08:11 | - | - | - | 0.8 | 427.1 | 4.2 |
| 08:10 | - | - | - | 1.5 | 448.0 | 4.1 |
| 08:09 | - | - | - | 1.0 | 439.5 | 4.3 |
| 08:08 | - | - | - | 0.6 | 419.4 | 4.3 |
| 08:07 | - | - | - | 0.6 | 425.7 | 4.2 |
| 08:06 | - | - | - | 0.7 | 429.4 | 4.2 |
| 08:05 | - | - | - | 0.7 | 427.1 | 4.2 |
| 08:04 | - | - | - | 0.6 | 417.6 | 4.0 |
| 08:03 | - | - | - | 0.5 | 410.1 | 3.9 |
| 08:02 | - | - | - | 0.6 | 418.7 | 3.7 |
| 08:01 | - | - | - | 0.4 | 411.7 | 3.5 |
| 08:00 | - | - | - | 0.4 | 407.2 | 3.6 |
| 07:59 | - | - | - | 1.0 | 445.7 | 3.7 |
| 07:58 | - | - | - | 0.7 | 440.2 | 4.2 |
| 07:57 | - | - | - | 0.6 | 429.5 | 4.7 |
| 07:56 | - | - | - | 0.5 | 415.2 | 4.5 |
| 07:55 | - | - | - | 0.5 | 424.3 | 4.3 |
| 07:54 | - | - | - | 0.9 | 450.8 | 4.5 |
| 07:53 | - | - | - | 1.0 | 455.9 | 3.9 |
| 07:52 | - | - | - | 0.6 | 427.1 | 4.2 |
| 07:51 | - | - | - | 0.7 | 431.4 | 4.7 |
| 07:50 | - | - | - | 0.7 | 437.3 | 4.7 |
| 07:49 | - | - | - | 0.8 | 442.1 | 4.3 |
| 07:48 | - | - | - | 0.7 | 433.7 | 4.1 |
| 07:47 | - | - | - | 0.6 | 425.5 | 4.3 |
| 07:46 | - | - | - | 0.7 | 436.5 | 4.4 |
| 07:45 | - | - | - | 0.8 | 443.5 | 4.5 |
| 07:44 | - | - | - | 0.8 | 453.3 | 4.8 |
| 07:43 | - | - | - | 0.7 | 425.6 | 5.0 |
| 07:42 | - | - | - | 0.9 | 450.9 | 5.0 |
| 07:41 | - | - | - | 0.9 | 446.0 | 5.1 |
| 07:40 | - | - | - | 0.9 | 463.1 | 5.1 |
| 07:39 | - | - | - | 0.7 | 434.6 | 5.1 |
| 07:38 | - | - | - | 0.6 | 434.2 | 4.8 |
| 07:37 | - | - | - | 0.7 | 431.2 | 4.5 |
| 07:36 | - | - | - | 0.9 | 437.1 | 4.3 |
| 07:35 | - | - | - | 0.7 | 428.4 | 4.4 |
| 07:34 | - | - | - | 0.6 | 424.5 | 4.4 |
| 07:33 | - | - | - | 0.8 | 433.9 | 4.6 |
| 07:32 | - | - | - | 1.0 | 447.9 | 4.7 |
| 07:31 | - | - | - | 0.9 | 451.4 | 4.8 |
| 07:30 | - | - | - | 0.8 | 443.6 | 4.8 |
| 07:29 | - | - | - | 0.8 | 446.7 | 4.8 |
| 07:28 | - | - | - | 0.8 | 442.9 | 4.6 |
| 07:27 | - | - | - | 0.8 | 431.9 | 4.3 |
| 07:26 | - | - | - | 0.7 | 427.9 | 4.4 |
| 07:25 | - | - | - | 0.8 | 436.2 | 4.4 |
| 07:24 | - | - | - | 0.9 | 450.9 | 4.4 |
| 07:23 | - | - | - | 0.5 | 416.0 | 4.7 |
| 07:22 | - | - | - | 0.4 | 406.2 | 4.4 |
| 07:21 | - | - | - | 1.0 | 440.5 | 3.5 |
| 07:20 | - | - | - | 1.2 | 451.4 | 3.3 |
| 07:19 | - | - | - | 0.3 | 427.9 | 4.2 |
Built 2026-07-07 09:19 from source
| Solar wind parameters of the latest hour by NOAA | |||
|---|---|---|---|
| parameter | min | max | mean |
| IMF Bz [nT] | 2.7 | 4.2 | 3.4 |
| velocity [km/s] | 422.2 | 436.5 | 430.5 |
| density [cm-3] | 1.5 | 1.8 | 1.6 |
| Geomagnetic activity (RX [nT]) | ||
|---|---|---|
| site | latest hour | next hour (RXmin, RXmax) |
| Kevo (KEV) | 5 | 4 | 48 |
| Maasi (MAS) | 6 | 4 | 47 |
| Kilpisjärvi (KIL) | - | 4 | 50 |
| Ivalo (IVA) | 6 | 3 | 53 |
| Muonio (MUO) | 6 | 4 | 40 |
| Sodankylä (SOD) | 5 | 4 | 37 |
| Pello (PEL) | 7 | 4 | 32 |
| Oulujärvi (OUJ) | 6 | 3 | 29 |
| Mekrijärvi (MEK) | 5 | 3 | 29 |
| Hankasalmi (HAN) | - | 3 | 22 |
| Nurmijärvi (NUR) | - | 3 | 23 |
| Tartu (TAR) | 6 | 2 | 20 |
| low | increased | moderate | high | very high |
Short explanation of the method
AurorasNow! (Finnish Meteorological Institute)Built 2026-07-07 09:17 from source
Issue Time: 2026-07-07 05:07 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3709
Begin Time: 2026-07-06 11:49 UTC
Yesterday Maximum 2MeV Flux: 1936 pfu
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3709
Begin Time: 2026-07-06 11:49 UTC
Yesterday Maximum 2MeV Flux: 1936 pfu
Issue Time: 2026-07-07 05:06 UTC
CANCEL ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Cancel Serial Number: 3710
Original Issue Time: 2026-07-07 05:03 UTC
Incorrect maximum value for yesterday.
CANCEL ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Cancel Serial Number: 3710
Original Issue Time: 2026-07-07 05:03 UTC
Incorrect maximum value for yesterday.
Issue Time: 2026-07-07 05:03 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3709
Begin Time: 2026-07-06 11:49 UTC
Yesterday Maximum 2MeV Flux: 1936 pfu
Yesterday's max: 194 pfu
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3709
Begin Time: 2026-07-06 11:49 UTC
Yesterday Maximum 2MeV Flux: 1936 pfu
Yesterday's max: 194 pfu
Issue Time: 2026-07-06 11:50 UTC
ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2026-07-06 11:49 UTC
Station: GOES-19
Comment: Yesterday's max: 625 pfu
Yesterday's max: 625 pfu
ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2026-07-06 11:49 UTC
Station: GOES-19
Comment: Yesterday's max: 625 pfu
Yesterday's max: 625 pfu
Issue Time: 2026-07-05 18:22 UTC
ALERT: Type II Radio Emission
Begin Time: 2026-07-05 16:26 UTC
Estimate Velocity: 959 km/s
Comment
ALERT: Type II Radio Emission
Begin Time: 2026-07-05 16:26 UTC
Estimate Velocity: 959 km/s
Comment
Issue Time: 2026-07-05 18:09 UTC
SUMMARY: X-ray Event exceeded M5
Begin Time: 2026-07-05 17:51 UTC
Maximum Time: 2026-07-05 17:57 UTC
End Time: 2026-07-05 18:02 UTC
Xray Class: M5.5
Optical Class
Location: N15W87
Noaa Scale: R2 - Moderate
Comment
NOAA Scale: R2 - Moderate
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.
SUMMARY: X-ray Event exceeded M5
Begin Time: 2026-07-05 17:51 UTC
Maximum Time: 2026-07-05 17:57 UTC
End Time: 2026-07-05 18:02 UTC
Xray Class: M5.5
Optical Class
Location: N15W87
Noaa Scale: R2 - Moderate
Comment
NOAA Scale: R2 - Moderate
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.
Issue Time: 2026-07-05 18:02 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2026-07-05 17:59 UTC
Synoptic Period: 1500-1800
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: 2026-07-05 17:59 UTC
Synoptic Period: 1500-1800
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: 2026-07-05 18:00 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2026-07-05 17:58 UTC
Noaa Scale: R2 - Moderate
Comment
NOAA Scale: R2 - Moderate
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2026-07-05 17:58 UTC
Noaa Scale: R2 - Moderate
Comment
NOAA Scale: R2 - Moderate
Issue Time: 2026-07-05 16:59 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026-07-05 16:58 UTC
Valid To: 2026-07-06 03:00 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: 2026-07-05 16:58 UTC
Valid To: 2026-07-06 03:00 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: 2026-07-05 02:56 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5377
Valid From: 2026-07-03 12:09 UTC
Now Valid Until: 2026-07-05 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: 5377
Valid From: 2026-07-03 12:09 UTC
Now Valid Until: 2026-07-05 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: 2026-07-05 00:27 UTC
CANCEL WARNING: Geomagnetic K-index of 7 or greater expected
Cancel Serial Number: 151
Original Issue Time: 2026-07-04 05:01 UTC
Wrong date in the original end time. Warning was supposed to expire at 04/1200z.
Wrong date in the original end time. Warning was supposed to expire at 04/1200z. NOAA Scale: G3 - Greater
CANCEL WARNING: Geomagnetic K-index of 7 or greater expected
Cancel Serial Number: 151
Original Issue Time: 2026-07-04 05:01 UTC
Wrong date in the original end time. Warning was supposed to expire at 04/1200z.
Wrong date in the original end time. Warning was supposed to expire at 04/1200z. NOAA Scale: G3 - Greater
Issue Time: 2026-07-05 00:05 UTC
CANCEL WARNING: Geomagnetic K-index of 6 expected
Cancel Serial Number: 665
Original Issue Time: 2026-07-04 13:57 UTC
Wrong date in the original end time. Warning was supposed to expire at 04/2100z.
Wrong date in the original end time. Warning was supposed to expire at 04/2100z.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.
CANCEL WARNING: Geomagnetic K-index of 6 expected
Cancel Serial Number: 665
Original Issue Time: 2026-07-04 13:57 UTC
Wrong date in the original end time. Warning was supposed to expire at 04/2100z.
Wrong date in the original end time. Warning was supposed to expire at 04/2100z.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: 2026-07-04 23:00 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026-07-04 23:01 UTC
Synoptic Period: 2100-2400
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: 2026-07-04 23:01 UTC
Synoptic Period: 2100-2400
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: 2026-07-04 21:16 UTC
SUMMARY: X-ray Event exceeded X1
Begin Time: 2026-07-04 20:29 UTC
Maximum Time: 2026-07-04 20:41 UTC
End Time: 2026-07-04 20:47 UTC
Xray Class: X1.3
Optical Class
Location: N15W75
Noaa Scale: R3 - Strong
Comment
NOAA Scale: R3 - Strong
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
SUMMARY: X-ray Event exceeded X1
Begin Time: 2026-07-04 20:29 UTC
Maximum Time: 2026-07-04 20:41 UTC
End Time: 2026-07-04 20:47 UTC
Xray Class: X1.3
Optical Class
Location: N15W75
Noaa Scale: R3 - Strong
Comment
NOAA Scale: R3 - Strong
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
Issue Time: 2026-07-04 21:15 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2026-07-04 20:40 UTC
Maximum Time: 2026-07-04 20:41 UTC
End Time: 2026-07-04 20:47 UTC
Peak Flux: 890 sfu
Duration: 7 minutes
Latest Penticton Noon Flux: 161 sfu
Comment
SUMMARY: 10cm Radio Burst
Begin Time: 2026-07-04 20:40 UTC
Maximum Time: 2026-07-04 20:41 UTC
End Time: 2026-07-04 20:47 UTC
Peak Flux: 890 sfu
Duration: 7 minutes
Latest Penticton Noon Flux: 161 sfu
Comment
Issue Time: 2026-07-04 21:12 UTC
ALERT: Type II Radio Emission
Begin Time: 2026-07-04 20:43 UTC
Estimate Velocity: 2714 km/s
Comment
ALERT: Type II Radio Emission
Begin Time: 2026-07-04 20:43 UTC
Estimate Velocity: 2714 km/s
Comment
Issue Time: 2026-07-04 20:43 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2026-07-04 20:40 UTC
Noaa Scale: R2 - Moderate
Comment
NOAA Scale: R2 - Moderate
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2026-07-04 20:40 UTC
Noaa Scale: R2 - Moderate
Comment
NOAA Scale: R2 - Moderate
Issue Time: 2026-07-04 20:22 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026-07-04 20:18 UTC
Synoptic Period: 1800-2100
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: 2026-07-04 20:18 UTC
Synoptic Period: 1800-2100
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: 2026-07-04 17:00 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2026-07-04 16:55 UTC
Synoptic Period: 1500-1800
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: 2026-07-04 16:55 UTC
Synoptic Period: 1500-1800
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: 2026-07-04 16:14 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026-07-04 16:10 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: 2026-07-04 16:10 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: 2026-07-04 14:21 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5376
Valid From: 2026-07-03 12:09 UTC
Now Valid Until: 2026-07-05 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: 5376
Valid From: 2026-07-03 12:09 UTC
Now Valid Until: 2026-07-05 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: 2026-07-04 14:12 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2247
Valid From: 2026-07-04 01:00 UTC
Now Valid Until: 2026-07-04 23:59 UTC
Warning Condition: Persistence
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: 2247
Valid From: 2026-07-04 01:00 UTC
Now Valid Until: 2026-07-04 23:59 UTC
Warning Condition: Persistence
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: 2026-07-04 13:58 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2026-07-04 13:58 UTC
Synoptic Period: 1200-1500
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: 2026-07-04 13:58 UTC
Synoptic Period: 1200-1500
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: 2026-07-04 13:57 UTC
WARNING: Geomagnetic K-index of 6 expected
Valid From: 2026-07-04 13:56 UTC
Valid To: 2026-07-05 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: 2026-07-04 13:56 UTC
Valid To: 2026-07-05 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: 2026-07-04 13:21 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026-07-04 13:19 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: 2026-07-04 13:19 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: 2026-07-04 10:43 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026-07-04 10:43 UTC
Synoptic Period: 0900-1200
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: 2026-07-04 10:43 UTC
Synoptic Period: 0900-1200
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: 2026-07-04 08:39 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2026-07-04 08:39 UTC
Synoptic Period: 0600-0900
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: 2026-07-04 08:39 UTC
Synoptic Period: 0600-0900
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: 2026-07-04 07:15 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026-07-04 07:15 UTC
Synoptic Period: 0600-0900
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: 2026-07-04 07:15 UTC
Synoptic Period: 0600-0900
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: 2026-07-04 05:09 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2026-07-04 05:09 UTC
Synoptic Period: 0300-0600
Active Warning: YES
Noaa Scale: G3 - Strong
Comment
NOAA Scale: G3 - Strong
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2026-07-04 05:09 UTC
Synoptic Period: 0300-0600
Active Warning: YES
Noaa Scale: G3 - Strong
Comment
NOAA Scale: G3 - Strong
Built 2026-07-07 05:09 from source
