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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, 2025 3:02:15 pm
Space Weather Message Code: ALTEF3
- Serial Number: 3523
- Issue Time: 2025 Sep 13 1902 UTC
- ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Threshold Reached: 2025 Sep 13 1820 UTC
- Station: GOES19
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Sep 13th, 2025 10:42:26 am
Space Weather Message Code: WATA20
- Serial Number: 1062
- Issue Time: 2025 Sep 13 1442 UTC
- WATCH: Geomagnetic Storm Category G1 Predicted
- Highest Storm Level Predicted by Day:
- Sep 14: G1 (Minor) Sep 15: None (Below G1) Sep 16: None (Below G1)
- THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
- 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 10th, 2025 10:51:25 pm
Space Weather Message Code: ALTK04
- Serial Number: 2590
- Issue Time: 2025 Sep 11 0251 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2025 Sep 11 0244 UTC
- Synoptic Period: 0000-0300 UTC
- Active Warning: Yes
- 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.
Geophysical Alert Message Issued: Sep 10th, 2025 9:08:35 pm
Space Weather Message Code: WARK04
- Serial Number: 5077
- Issue Time: 2025 Sep 11 0108 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2025 Sep 11 0108 UTC
- Valid To: 2025 Sep 11 0900 UTC
- Warning Condition: Onset
- 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.
Geophysical Alert Message Issued: Sep 10th, 2025 5:06:34 am
Space Weather Message Code: WARK05
- Serial Number: 2097
- Issue Time: 2025 Sep 10 0906 UTC
- CANCEL WARNING: Geomagnetic K-index of 5 expected
- Cancel Serial Number: 2096
- Original Issue Time: 2025 Sep 09 2240 UTC
- Comment: Wrong Valid to date. Correction being issued.
- 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 10th, 2025 5:08:50 am
Space Weather Message Code: WARK05
- Serial Number: 2098
- Issue Time: 2025 Sep 10 0908 UTC
- WARNING: Geomagnetic K-index of 5 expected
- Valid From: 2025 Sep 10 0908 UTC
- Valid To: 2025 Sep 10 1500 UTC
- Warning Condition: Persistence
- NOAA Scale: G1 - Minor
- Comment: Corrected dates.
- 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 10th, 2025 1:46:22 am
Space Weather Message Code: WARK04
- Serial Number: 5076
- Issue Time: 2025 Sep 10 0546 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5075
- Valid From: 2025 Sep 09 2100 UTC
- Now Valid Until: 2025 Sep 10 1800 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.
Geophysical Alert Message Issued: Sep 9th, 2025 7:28:12 pm
Space Weather Message Code: ALTK06
- Serial Number: 653
- Issue Time: 2025 Sep 09 2328 UTC
- ALERT: Geomagnetic K-index of 6
- Threshold Reached: 2025 Sep 09 2316 UTC
- Synoptic Period: 2100-2400 UTC
- Active Warning: Yes
- NOAA Scale: G2 - Moderate
- 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, 2025 7:18:13 pm
Space Weather Message Code: ALTK05
- Serial Number: 1847
- Issue Time: 2025 Sep 09 2318 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Sep 09 2309 UTC
- Synoptic Period: 2100-2400 UTC
- Active Warning: Yes
- 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 9th, 2025 7:18:46 pm
Space Weather Message Code: WARK06
- Serial Number: 602
- Issue Time: 2025 Sep 09 2318 UTC
- WARNING: Geomagnetic K-Index of 6 expected
- Valid From: 2025 Sep 09 2318 UTC
- Valid To: 2025 Sep 10 0600 UTC
- Warning Condition: Onset
- NOAA Scale: G2 - Moderate
- 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.
