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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: Nov 27th, 2025 12:00:02 am
Space Weather Message Code: ALTEF3
- Serial Number: 3564
- Issue Time: 2025 Nov 27 0500 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3563
- Begin Time: 2025 Nov 25 1450 UTC
- Yesterday Maximum 2MeV Flux: 10064 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Nov 26th, 2025 6:22:14 pm
Space Weather Message Code: WARK04
- Serial Number: 5162
- Issue Time: 2025 Nov 26 2322 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5161
- Valid From: 2025 Nov 24 0226 UTC
- Now Valid Until: 2025 Nov 27 1200 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: Nov 26th, 2025 5:45:57 am
Space Weather Message Code: WARK04
- Serial Number: 5161
- Issue Time: 2025 Nov 26 1045 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5160
- Valid From: 2025 Nov 24 0226 UTC
- Now Valid Until: 2025 Nov 26 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: Nov 26th, 2025 12:01:11 am
Space Weather Message Code: ALTEF3
- Serial Number: 3563
- Issue Time: 2025 Nov 26 0501 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3562
- Begin Time: 2025 Nov 25 1450 UTC
- Yesterday Maximum 2MeV Flux: 3722 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Nov 25th, 2025 7:39:22 pm
Space Weather Message Code: WATA20
- Serial Number: 1078
- Issue Time: 2025 Nov 26 0039 UTC
- WATCH: Geomagnetic Storm Category G1 Predicted
- Highest Storm Level Predicted by Day:
- Nov 26: G1 (Minor) Nov 27: G1 (Minor) Nov 28: None (Below G1)
- 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: Nov 25th, 2025 6:54:45 pm
Space Weather Message Code: WARK04
- Serial Number: 5160
- Issue Time: 2025 Nov 25 2354 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5159
- Valid From: 2025 Nov 24 0226 UTC
- Now Valid Until: 2025 Nov 26 1200 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: Nov 25th, 2025 3:53:03 pm
Space Weather Message Code: ALTTP2
- Serial Number: 1446
- Issue Time: 2025 Nov 25 2053 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2025 Nov 25 1950 UTC
- Estimated Velocity: 1050 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: Nov 25th, 2025 9:55:11 am
Space Weather Message Code: WARK05
- Serial Number: 2142
- Issue Time: 2025 Nov 25 1455 UTC
- EXTENDED WARNING: Geomagnetic K-index of 5 expected
- Extension to Serial Number: 2141
- Valid From: 2025 Nov 25 0211 UTC
- Now Valid Until: 2025 Nov 25 2100 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 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: Nov 25th, 2025 9:51:30 am
Space Weather Message Code: ALTEF3
- Serial Number: 3562
- Issue Time: 2025 Nov 25 1451 UTC
- ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Threshold Reached: 2025 Nov 25 1450 UTC
- Station: GOES19
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Nov 25th, 2025 3:47:05 am
Space Weather Message Code: ALTK05
- Serial Number: 1917
- Issue Time: 2025 Nov 25 0847 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Nov 25 0845 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.
