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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: Oct 11th, 2025 8:20:15 pm
Space Weather Message Code: WARK04
- Serial Number: 5105
- Issue Time: 2025 Oct 12 0020 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5104
- Valid From: 2025 Oct 11 0502 UTC
- Now Valid Until: 2025 Oct 12 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: Oct 11th, 2025 7:56:19 pm
Space Weather Message Code: WARK04
- Serial Number: 5104
- Issue Time: 2025 Oct 11 2356 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5103
- Valid From: 2025 Oct 11 0502 UTC
- Now Valid Until: 2025 Oct 11 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: Oct 11th, 2025 5:02:44 am
Space Weather Message Code: ALTK05
- Serial Number: 1878
- Issue Time: 2025 Oct 11 0902 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Oct 11 0859 UTC
- Synoptic Period: 0600-0900 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: Oct 11th, 2025 4:16:07 am
Space Weather Message Code: WARK05
- Serial Number: 2117
- Issue Time: 2025 Oct 11 0816 UTC
- WARNING: Geomagnetic K-index of 5 expected
- Valid From: 2025 Oct 11 0815 UTC
- Valid To: 2025 Oct 11 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: Oct 11th, 2025 1:10:13 am
Space Weather Message Code: ALTK04
- Serial Number: 2596
- Issue Time: 2025 Oct 11 0510 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2025 Oct 11 0509 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.
Geophysical Alert Message Issued: Oct 11th, 2025 12:59:26 am
Space Weather Message Code: ALTEF3
- Serial Number: 3543
- Issue Time: 2025 Oct 11 0459 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3542
- Begin Time: 2025 Oct 01 1325 UTC
- Yesterday Maximum 2MeV Flux: 2513 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Oct 11th, 2025 1:03:03 am
Space Weather Message Code: WARK04
- Serial Number: 5103
- Issue Time: 2025 Oct 11 0503 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2025 Oct 11 0502 UTC
- Valid To: 2025 Oct 11 2359 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: Oct 10th, 2025 3:27:57 pm
Space Weather Message Code: WATA20
- Serial Number: 1069
- Issue Time: 2025 Oct 10 1927 UTC
- WATCH: Geomagnetic Storm Category G1 Predicted
- Highest Storm Level Predicted by Day:
- Oct 11: None (Below G1) Oct 12: G1 (Minor) Oct 13: 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: Oct 10th, 2025 2:46:55 am
Space Weather Message Code: ALTEF3
- Serial Number: 3542
- Issue Time: 2025 Oct 10 0646 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3541
- Begin Time: 2025 Oct 01 1325 UTC
- Yesterday Maximum 2MeV Flux: 5051 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Oct 9th, 2025 11:02:10 pm
Space Weather Message Code: ALTK04
- Serial Number: 2595
- Issue Time: 2025 Oct 10 0302 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2025 Oct 10 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.
