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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: Aug 25th, 2025 10:15:12 am
Space Weather Message Code: ALTPX1
- Serial Number: 359
- Issue Time: 2025 Aug 25 1415 UTC
- ALERT: Proton Event 10MeV Integral Flux exceeded 10pfu
- Begin Time: 2025 Aug 25 1355 UTC
- NOAA Scale: S1 - Minor
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.
Geophysical Alert Message Issued: Aug 25th, 2025 8:52:24 am
Space Weather Message Code: ALTEF3
- Serial Number: 3521
- Issue Time: 2025 Aug 25 1252 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3520
- Begin Time: 2025 Aug 24 1620 UTC
- Yesterday Maximum 2MeV Flux: 1496 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Aug 25th, 2025 7:39:22 am
Space Weather Message Code: WARPX1
- Serial Number: 605
- Issue Time: 2025 Aug 25 1139 UTC
- EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
- Extension to Serial Number: 604
- Valid From: 2025 Aug 24 2340 UTC
- Now Valid Until: 2025 Aug 25 2359 UTC
- Warning Condition: Persistence
- Predicted NOAA Scale: S1 - Minor
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.
Geophysical Alert Message Issued: Aug 24th, 2025 7:39:42 pm
Space Weather Message Code: WARPX1
- Serial Number: 604
- Issue Time: 2025 Aug 24 2339 UTC
- WARNING: Proton 10MeV Integral Flux above 10pfu expected
- Valid From: 2025 Aug 24 2340 UTC
- Valid To: 2025 Aug 25 1200 UTC
- Warning Condition: Onset
- Predicted NOAA Scale: S1 - Minor
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.
Geophysical Alert Message Issued: Aug 24th, 2025 12:39:08 pm
Space Weather Message Code: ALTEF3
- Serial Number: 3520
- Issue Time: 2025 Aug 24 1639 UTC
- ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Threshold Reached: 2025 Aug 24 1620 UTC
- Station: GOES19
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Aug 21st, 2025 1:44:08 pm
Space Weather Message Code: ALTEF3
- Serial Number: 3519
- Issue Time: 2025 Aug 21 1744 UTC
- ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Threshold Reached: 2025 Aug 21 1735 UTC
- Station: GOES19
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Aug 21st, 2025 7:23:44 am
Space Weather Message Code: ALTTP2
- Serial Number: 1425
- Issue Time: 2025 Aug 21 1123 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2025 Aug 21 0822 UTC
- Estimated Velocity: 1323 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: Aug 19th, 2025 10:55:25 pm
Space Weather Message Code: WARK04
- Serial Number: 5066
- Issue Time: 2025 Aug 20 0255 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5065
- Valid From: 2025 Aug 19 1255 UTC
- Now Valid Until: 2025 Aug 20 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: Aug 19th, 2025 3:19:05 pm
Space Weather Message Code: ALTK05
- Serial Number: 1841
- Issue Time: 2025 Aug 19 1919 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Aug 19 1916 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.
Geophysical Alert Message Issued: Aug 19th, 2025 2:29:36 pm
Space Weather Message Code: WARK05
- Serial Number: 2088
- Issue Time: 2025 Aug 19 1829 UTC
- WARNING: Geomagnetic K-index of 5 expected
- Valid From: 2025 Aug 19 1828 UTC
- Valid To: 2025 Aug 20 0300 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.
