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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: Apr 30th, 2025 7:30:52 am
Space Weather Message Code: WARK04
- Serial Number: 4941
- Issue Time: 2025 Apr 30 1130 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 4940
- Valid From: 2025 Apr 30 0225 UTC
- Now Valid Until: 2025 Apr 30 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: Apr 29th, 2025 11:00:30 pm
Space Weather Message Code: ALTK04
- Serial Number: 2553
- Issue Time: 2025 Apr 30 0300 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2025 Apr 30 0259 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: Apr 29th, 2025 10:25:26 pm
Space Weather Message Code: WARK04
- Serial Number: 4940
- Issue Time: 2025 Apr 30 0225 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2025 Apr 30 0225 UTC
- Valid To: 2025 Apr 30 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: Apr 27th, 2025 12:32:51 pm
Space Weather Message Code: ALTEF3
- Serial Number: 3455
- Issue Time: 2025 Apr 27 1632 UTC
- ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Threshold Reached: 2025 Apr 27 1605 UTC
- Station: GOES-19
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Apr 24th, 2025 1:16:22 pm
Space Weather Message Code: WARK04
- Serial Number: 4939
- Issue Time: 2025 Apr 24 1716 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 4938
- Valid From: 2025 Apr 24 0655 UTC
- Now Valid Until: 2025 Apr 25 0900 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: Apr 24th, 2025 7:36:29 am
Space Weather Message Code: WARK04
- Serial Number: 4938
- Issue Time: 2025 Apr 24 1136 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 4937
- Valid From: 2025 Apr 24 0655 UTC
- Now Valid Until: 2025 Apr 24 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: Apr 24th, 2025 3:09:39 am
Space Weather Message Code: ALTK04
- Serial Number: 2552
- Issue Time: 2025 Apr 24 0709 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2025 Apr 24 0703 UTC
- Synoptic Period: 0600-0900 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: Apr 24th, 2025 2:56:20 am
Space Weather Message Code: WARK04
- Serial Number: 4937
- Issue Time: 2025 Apr 24 0656 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2025 Apr 24 0655 UTC
- Valid To: 2025 Apr 24 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: Apr 21st, 2025 7:56:16 pm
Space Weather Message Code: WARK04
- Serial Number: 4936
- Issue Time: 2025 Apr 21 2356 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 4935
- Valid From: 2025 Apr 21 0218 UTC
- Now Valid Until: 2025 Apr 22 1159 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: Apr 21st, 2025 4:34:13 pm
Space Weather Message Code: ALTK05
- Serial Number: 1756
- Issue Time: 2025 Apr 21 2034 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Apr 21 2033 UTC
- Synoptic Period: 1800-2100 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.
