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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: Sep 28th, 2025 6:46:18 am
Space Weather Message Code: SUMXM5
- Serial Number: 295
- Issue Time: 2025 Sep 28 1046 UTC
- SUMMARY: X-ray Event exceeded M5
- Begin Time: 2025 Sep 28 0834 UTC
- Maximum Time: 2025 Sep 28 0846 UTC
- End Time: 2025 Sep 28 0849 UTC
- X-ray Class: M6.4
- Optical Class: 1b
- Location: N03E58
- NOAA Scale: R2 - Moderate
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
- Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.
Geophysical Alert Message Issued: Sep 28th, 2025 6:34:52 am
Space Weather Message Code: ALTXMF
- Serial Number: 491
- Issue Time: 2025 Sep 28 1034 UTC
- ALERT: X-Ray Flux exceeded M5
- Threshold Reached: 2025 Sep 28 0843 UTC
- NOAA Scale: R2 - Moderate
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- 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.
Geophysical Alert Message Issued: Sep 27th, 2025 9:46:41 am
Space Weather Message Code: ALTEF3
- Serial Number: 3532
- Issue Time: 2025 Sep 27 1346 UTC
- ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Threshold Reached: 2025 Sep 27 1330 UTC
- Station: GOES19
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Sep 26th, 2025 4:41:13 pm
Space Weather Message Code: ALTTP2
- Serial Number: 1427
- Issue Time: 2025 Sep 26 2041 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2025 Sep 26 2005 UTC
- Estimated Velocity: 778 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: Sep 23rd, 2025 7:11:58 am
Space Weather Message Code: ALTTP2
- Serial Number: 1426
- Issue Time: 2025 Sep 23 1111 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2025 Sep 23 1042 UTC
- Estimated Velocity: 835 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: Sep 22nd, 2025 7:54:13 pm
Space Weather Message Code: WARK04
- Serial Number: 5085
- Issue Time: 2025 Sep 22 2354 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5084
- Valid From: 2025 Sep 22 0157 UTC
- Now Valid Until: 2025 Sep 23 0600 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: Sep 22nd, 2025 8:11:53 am
Space Weather Message Code: ALTEF3
- Serial Number: 3531
- Issue Time: 2025 Sep 22 1211 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3530
- Begin Time: 2025 Sep 16 1100 UTC
- Yesterday Maximum 2MeV Flux: 4819 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Sep 21st, 2025 9:58:00 pm
Space Weather Message Code: WARK04
- Serial Number: 5084
- Issue Time: 2025 Sep 22 0157 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2025 Sep 22 0157 UTC
- Valid To: 2025 Sep 22 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.
