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Having SatCom problems?
A burst of radiation on the sun's surface may trigger a geomagnetic storm, which can disrupt satellite communications.
In order to prevent unnecessary maintenance on satellite communications systems Air Sat One has provided a feed of Geophysical Events from NOAA's Space Weather Prediction Center. Check here to see if solar activity could be a cause of satellite communications problems.
Geophysical Alert Message Issued: Sep 13th, 2026 4:27:29 am
Space Weather Message Code: ALTEF3
- Serial Number: 3743
- Issue Time: 2026 Sep 13 0827 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1,000pfu
- Continuation of Serial Number: 3742
- Begin Time: 2026 Sep 10 1304 UTC
- Yesterday Maximum 2MeV Flux: 1828 pfu
- Max time: 2026 Sep 12 1615 UTC
Geophysical Alert Message Issued: Sep 12th, 2026 2:45:35 am
Space Weather Message Code: ALTEF3
- Serial Number: 3742
- Issue Time: 2026 Sep 12 0645 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1,000pfu
- Continuation of Serial Number: 3741
- Begin Time: 2026 Sep 10 1304 UTC
- Yesterday Maximum 2MeV Flux: 7008 pfu
- Max time: 2026 Sep 11 1355 UTC
Geophysical Alert Message Issued: Sep 11th, 2026 1:01:52 am
Space Weather Message Code: ALTEF3
- Serial Number: 3741
- Issue Time: 2026 Sep 11 0501 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1,000pfu
- Continuation of Serial Number: 3740
- Begin Time: 2026 Sep 10 1304 UTC
- Yesterday Maximum 2MeV Flux: 1391 pfu
- Max time: 2026 Sep 11 0455 UTC
Geophysical Alert Message Issued: Sep 10th, 2026 8:45:33 pm
Space Weather Message Code: ALTEF3
- Serial Number: 3740
- Issue Time: 2026 Sep 11 0045 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1,000pfu
- Continuation of Serial Number: 3739
- Begin Time: 2026 Sep 10 1304 UTC
- Yesterday Maximum 2MeV Flux: 3080 pfu
- Max time: 2026 Sep 10 1745 UTC
Geophysical Alert Message Issued: Sep 10th, 2026 9:06:18 am
Space Weather Message Code: ALTEF3
- Serial Number: 3739
- Issue Time: 2026 Sep 10 1306 UTC
- ALERT: Electron 2MeV Integral Flux exceeded 1,000pfu
- Threshold Reached: 2026 Sep 10 1304 UTC
- Station: GOES-19
- Comment: Yesterday's max: 1037 pfu
Geophysical Alert Message Issued: Sep 9th, 2026 5:01:32 pm
Space Weather Message Code: WATA30
- Serial Number: 282
- Issue Time: 2026 Sep 09 2101 UTC
- CANCEL WATCH: Geomagnetic Storm Category G2 Predicted
- Cancel Serial Number: 281
- Original Issue Time: 2026 Sep 08 1702 UTC
- Cancelled Level Predicted:
- Sep 08 : None (Bellow G1) Sep 09 : None (Bellow G1) Sep 10 : None (Bellow G1)
- Conditions no longer warrant watch criteria.
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
- 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.
Geophysical Alert Message Issued: Sep 9th, 2026 1:35:37 am
Space Weather Message Code: ALTEF3
- Serial Number: 3738
- Issue Time: 2026 Sep 09 0535 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1,000pfu
- Continuation of Serial Number: 3737
- Begin Time: 2026 Sep 08 1550 UTC
- Yesterday Maximum 2MeV Flux: 1540 pfu
- Max time: 2026 Sep 09 0145 UTC
Geophysical Alert Message Issued: Sep 9th, 2026 1:38:36 am
Space Weather Message Code: ALTEF3
- Serial Number: 3738
- Issue Time: 2026 Sep 09 0538 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1,000pfu
- Continuation of Serial Number: 3738
- Begin Time: 2026 Sep 08 1550 UTC
- Yesterday Maximum 2MeV Flux: 1003 pfu
- CORRECTED
Geophysical Alert Message Issued: Sep 8th, 2026 1:51:10 pm
Space Weather Message Code: ALTK05
- Serial Number: 2049
- Issue Time: 2026 Sep 08 1751 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2026 Sep 08 1744 UTC
- Synoptic Period: 1500-1800
- Active Warning: YES
- Noaa Scale: G1 - Minor
- Comment:
- NOAA Scale: G1 - Minor
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
- 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.
Geophysical Alert Message Issued: Sep 8th, 2026 1:30:02 pm
Space Weather Message Code: WARK04
- Serial Number: 5415
- Issue Time: 2026 Sep 08 1730 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5414
- Valid From: 2026 Sep 07 0854 UTC
- Now Valid Until: 2026 Sep 09 0900 UTC
- Warning Condition: Persistence
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
- Induced Currents - Weak power grid fluctuations can occur.
- Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
