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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 22nd, 2025 12:55:16 pm
Space Weather Message Code: WARK04
- Serial Number: 5194
- Issue Time: 2025 Dec 22 1755 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5193
- Valid From: 2025 Dec 21 0240 UTC
- Now Valid Until: 2025 Dec 23 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 22nd, 2025 10:00:00 am
Space Weather Message Code: ALTEF3
- Serial Number: 3581
- Issue Time: 2025 Dec 22 1500 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3580
- Begin Time: 2025 Dec 21 1425 UTC
- Yesterday Maximum 2MeV Flux: 1566 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Dec 22nd, 2025 9:10:35 am
Space Weather Message Code: ALTK05
- Serial Number: 1934
- Issue Time: 2025 Dec 22 1410 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Dec 22 1410 UTC
- Synoptic Period: 1200-1500 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 22nd, 2025 9:07:24 am
Space Weather Message Code: WARK05
- Serial Number: 2159
- Issue Time: 2025 Dec 22 1407 UTC
- WARNING: Geomagnetic K-index of 5 expected
- Valid From: 2025 Dec 22 1407 UTC
- Valid To: 2025 Dec 22 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 21st, 2025 6:16:14 pm
Space Weather Message Code: ALTK05
- Serial Number: 1933
- Issue Time: 2025 Dec 21 2316 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Dec 21 2314 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 21st, 2025 1:00:13 pm
Space Weather Message Code: ALTK05
- Serial Number: 1932
- Issue Time: 2025 Dec 21 1800 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Dec 21 1759 UTC
- Synoptic Period: 1500-1800 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 21st, 2025 12:55:06 pm
Space Weather Message Code: WARK04
- Serial Number: 5193
- Issue Time: 2025 Dec 21 1755 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5192
- Valid From: 2025 Dec 21 0240 UTC
- Now Valid Until: 2025 Dec 22 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 21st, 2025 9:45:44 am
Space Weather Message Code: ALTEF3
- Serial Number: 3580
- Issue Time: 2025 Dec 21 1445 UTC
- ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Threshold Reached: 2025 Dec 21 1425 UTC
- Station: GOES19
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Dec 21st, 2025 8:50:55 am
Space Weather Message Code: WARK05
- Serial Number: 2158
- Issue Time: 2025 Dec 21 1350 UTC
- WARNING: Geomagnetic K-index of 5 expected
- Valid From: 2025 Dec 21 1400 UTC
- Valid To: 2025 Dec 22 1200 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 20th, 2025 10:04:09 pm
Space Weather Message Code: ALTK04
- Serial Number: 2617
- Issue Time: 2025 Dec 21 0304 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2025 Dec 21 0300 UTC
- Synoptic Period: 0300-0600 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.
