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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: Dec 6th, 2025 7:34:29 am
Space Weather Message Code: ALTEF3
- Serial Number: 3572
- Issue Time: 2025 Dec 06 1234 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3571
- Begin Time: 2025 Dec 05 1530 UTC
- Yesterday Maximum 2MeV Flux: 1426 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Dec 6th, 2025 3:52:21 am
Space Weather Message Code: WARK04
- Serial Number: 5175
- Issue Time: 2025 Dec 06 0852 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5174
- Valid From: 2025 Dec 06 0205 UTC
- Now Valid Until: 2025 Dec 06 2359 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: Dec 6th, 2025 3:37:21 am
Space Weather Message Code: WARK05
- Serial Number: 2148
- Issue Time: 2025 Dec 06 0837 UTC
- WARNING: Geomagnetic K-index of 5 expected
- Valid From: 2025 Dec 06 0836 UTC
- Valid To: 2025 Dec 06 2359 UTC
- Warning Condition: Onset
- 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: Dec 5th, 2025 9:58:26 pm
Space Weather Message Code: ALTK04
- Serial Number: 2613
- Issue Time: 2025 Dec 06 0258 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2025 Dec 06 0256 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: Dec 5th, 2025 9:06:29 pm
Space Weather Message Code: WARK04
- Serial Number: 5174
- Issue Time: 2025 Dec 06 0206 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2025 Dec 06 0205 UTC
- Valid To: 2025 Dec 06 1200 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: Dec 5th, 2025 2:22:12 pm
Space Weather Message Code: WATA20
- Serial Number: 1080
- Issue Time: 2025 Dec 05 1922 UTC
- WATCH: Geomagnetic Storm Category G1 Predicted
- Highest Storm Level Predicted by Day:
- Dec 06: None (Below G1) Dec 07: G1 (Minor) Dec 08: G1 (Minor)
- 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: Dec 5th, 2025 10:45:20 am
Space Weather Message Code: ALTEF3
- Serial Number: 3571
- Issue Time: 2025 Dec 05 1545 UTC
- ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Threshold Reached: 2025 Dec 05 1530 UTC
- Station: GOES-19
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Dec 4th, 2025 4:29:37 pm
Space Weather Message Code: WATA20
- Serial Number: 1079
- Issue Time: 2025 Dec 04 2129 UTC
- WATCH: Geomagnetic Storm Category G1 Predicted
- Highest Storm Level Predicted by Day:
- Dec 05: None (Below G1) Dec 06: None (Below G1) Dec 07: G1 (Minor)
- 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: Dec 4th, 2025 8:21:31 am
Space Weather Message Code: WARK04
- Serial Number: 5173
- Issue Time: 2025 Dec 04 1321 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5172
- Valid From: 2025 Dec 03 1022 UTC
- Now Valid Until: 2025 Dec 05 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: Dec 4th, 2025 6:58:26 am
Space Weather Message Code: WARK05
- Serial Number: 2147
- Issue Time: 2025 Dec 04 1158 UTC
- EXTENDED WARNING: Geomagnetic K-index of 5 expected
- Extension to Serial Number: 2146
- Valid From: 2025 Dec 03 1425 UTC
- Now Valid Until: 2025 Dec 05 0000 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 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.
