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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.
Space Weather Message Code: ALTK05
- Serial Number: 2013
- Issue Time: 2026 Apr 30 2359 UTC
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- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2026 Apr 30 2359 UTC
- Synoptic Period: 2100-2400 UTC
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- Active Warning: Yes
- NOAA Scale: G1 - Minor
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- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
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- 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.
Space Weather Message Code: WARK04
- Serial Number: 5332
- Issue Time: 2026 Apr 30 2311 UTC
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- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5331
- Valid From: 2026 Apr 30 2005 UTC
- Now Valid Until: 2026 May 01 1500 UTC
- Warning Condition: Persistence
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- 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.
Space Weather Message Code: WARK05
- Serial Number: 2230
- Issue Time: 2026 Apr 30 2309 UTC
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- WARNING: Geomagnetic K-index of 5 expected
- Valid From: 2026 Apr 30 2309 UTC
- Valid To: 2026 May 01 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.
Space Weather Message Code: ALTK04
- Serial Number: 2653
- Issue Time: 2026 Apr 30 2035 UTC
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- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2026 Apr 30 2035 UTC
- Synoptic Period: 1800-2100 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.
Space Weather Message Code: WARK04
- Serial Number: 5331
- Issue Time: 2026 Apr 30 2006 UTC
-
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2026 Apr 30 2005 UTC
- Valid To: 2026 May 01 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.
