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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: Jul 31st, 2025 12:52:03 pm
Space Weather Message Code: ALTEF3
- Serial Number: 3508
- Issue Time: 2025 Jul 31 1652 UTC
- ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Threshold Reached: 2025 Jul 31 1635 UTC
- Station: GOES19
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Jul 28th, 2025 4:46:56 am
Space Weather Message Code: ALTEF3
- Serial Number: 3507
- Issue Time: 2025 Jul 28 0846 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3506
- Begin Time: 2025 Jul 24 1320 UTC
- Yesterday Maximum 2MeV Flux: 1686 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Jul 27th, 2025 8:52:06 am
Space Weather Message Code: ALTEF3
- Serial Number: 3506
- Issue Time: 2025 Jul 27 1252 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3505
- Begin Time: 2025 Jul 24 1320 UTC
- Yesterday Maximum 2MeV Flux: 2510 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Jul 26th, 2025 1:53:56 pm
Space Weather Message Code: ALTK04
- Serial Number: 2582
- Issue Time: 2025 Jul 26 1753 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2025 Jul 26 1750 UTC
- Synoptic Period: 1500-1800 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: Jul 26th, 2025 1:30:56 pm
Space Weather Message Code: WARK04
- Serial Number: 5048
- Issue Time: 2025 Jul 26 1730 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2025 Jul 26 1730 UTC
- Valid To: 2025 Jul 27 0300 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: Jul 26th, 2025 2:01:52 am
Space Weather Message Code: ALTEF3
- Serial Number: 3505
- Issue Time: 2025 Jul 26 0601 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3504
- Begin Time: 2025 Jul 24 1320 UTC
- Yesterday Maximum 2MeV Flux: 3124 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Jul 25th, 2025 6:05:01 am
Space Weather Message Code: ALTEF3
- Serial Number: 3504
- Issue Time: 2025 Jul 25 1005 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3503
- Begin Time: 2025 Jul 24 1320 UTC
- Yesterday Maximum 2MeV Flux: 2312 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Jul 24th, 2025 3:47:03 pm
Space Weather Message Code: WATA20
- Serial Number: 1054
- Issue Time: 2025 Jul 24 1947 UTC
- WATCH: Geomagnetic Storm Category G1 Predicted
- Highest Storm Level Predicted by Day:
- Jul 25: None (Below G1) Jul 26: None (Below G1) Jul 27: G1 (Minor)
- THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
- Comment: G1 (Minor) geomagnetic storming is likely on 27 July due to CME effects from an event that left the Sun on 23 July.
- 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: Jul 24th, 2025 1:47:55 pm
Space Weather Message Code: WARK04
- Serial Number: 5047
- Issue Time: 2025 Jul 24 1747 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5046
- Valid From: 2025 Jul 24 1038 UTC
- Now Valid Until: 2025 Jul 25 0300 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: Jul 24th, 2025 9:34:35 am
Space Weather Message Code: ALTEF3
- Serial Number: 3503
- Issue Time: 2025 Jul 24 1334 UTC
- ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Threshold Reached: 2025 Jul 24 1320 UTC
- Station: GOES19
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
