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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.
Space Weather Message Code: SUMX01
- Serial Number: 195
- Issue Time: 2025 Jun 17 2204 UTC
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- SUMMARY: X-ray Event exceeded X1
- Begin Time: 2025 Jun 17 2138 UTC
- Maximum Time: 2025 Jun 17 2149 UTC
- End Time: 2025 Jun 17 2154 UTC
- X-ray Class: X1.2
- Optical Class: 2b
- Location: N18W10
- NOAA Scale: R3 - Strong
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- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
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- Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
- Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
Space Weather Message Code: ALTXMF
- Serial Number: 489
- Issue Time: 2025 Jun 17 2150 UTC
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- ALERT: X-Ray Flux exceeded M5
- Threshold Reached: 2025 Jun 17 2147 UTC
- NOAA Scale: R2 - Moderate
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- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
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- Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
Space Weather Message Code: WATA20
- Serial Number: 1047
- Issue Time: 2025 Jun 17 2027 UTC
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- WATCH: Geomagnetic Storm Category G1 Predicted
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- Highest Storm Level Predicted by Day:
- Jun 18: None (Below G1) Jun 19: None (Below G1) Jun 20: G1 (Minor)
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- THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
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- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
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- 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.
Space Weather Message Code: ALTEF3
- Serial Number: 3480
- Issue Time: 2025 Jun 17 1350 UTC
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- ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Threshold Reached: 2025 Jun 17 1340 UTC
- Station: GOES19
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- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
