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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 16th, 2025 7:04:00 pm
Space Weather Message Code: WATA20
- Serial Number: 1082
- Issue Time: 2025 Dec 17 0004 UTC
- CANCEL WATCH: Geomagnetic Storm Category G1 Predicted
- Cancel Serial Number: 1081
- Original Issue Time: 2025 Dec 15 2245 UTC
- Comment: Conditions no longer warrant watch.
- 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 15th, 2025 8:11:20 pm
Space Weather Message Code: WARK04
- Serial Number: 5185
- Issue Time: 2025 Dec 16 0111 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2025 Dec 16 0110 UTC
- Valid To: 2025 Dec 16 0600 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 15th, 2025 5:45:15 pm
Space Weather Message Code: WATA20
- Serial Number: 1081
- Issue Time: 2025 Dec 15 2245 UTC
- WATCH: Geomagnetic Storm Category G1 Predicted
- Highest Storm Level Predicted by Day:
- Dec 16: None (Below G1) Dec 17: None (Below G1) Dec 18: 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 14th, 2025 4:32:09 am
Space Weather Message Code: ALTTP2
- Serial Number: 1458
- Issue Time: 2025 Dec 14 0932 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2025 Dec 14 0744 UTC
- Estimated Velocity: 585 km/s
- Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
Geophysical Alert Message Issued: Dec 13th, 2025 9:56:12 am
Space Weather Message Code: WARK04
- Serial Number: 5184
- Issue Time: 2025 Dec 13 1456 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5183
- Valid From: 2025 Dec 10 2040 UTC
- Now Valid Until: 2025 Dec 14 0600 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 13th, 2025 6:06:54 am
Space Weather Message Code: ALTTP2
- Serial Number: 1457
- Issue Time: 2025 Dec 13 1106 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2025 Dec 13 1049 UTC
- Estimated Velocity: 778 km/s
- Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
Geophysical Alert Message Issued: Dec 12th, 2025 10:02:17 pm
Space Weather Message Code: ALTK05
- Serial Number: 1930
- Issue Time: 2025 Dec 13 0302 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Dec 13 0259 UTC
- Synoptic Period: 0000-0300 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: Dec 12th, 2025 5:50:46 pm
Space Weather Message Code: ALTK05
- Serial Number: 1929
- Issue Time: 2025 Dec 12 2250 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Dec 12 2248 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: Dec 12th, 2025 5:37:40 pm
Space Weather Message Code: WARK04
- Serial Number: 5183
- Issue Time: 2025 Dec 12 2237 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5182
- Valid From: 2025 Dec 10 2040 UTC
- Now Valid Until: 2025 Dec 13 1500 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 12th, 2025 2:42:19 pm
Space Weather Message Code: WARK05
- Serial Number: 2155
- Issue Time: 2025 Dec 12 1942 UTC
- WARNING: Geomagnetic K-index of 5 expected
- Valid From: 2025 Dec 12 1940 UTC
- Valid To: 2025 Dec 13 0900 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.
