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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: Apr 5th, 2026 1:07:42 am
Space Weather Message Code: ALTEF3
- Serial Number: 3666
- Issue Time: 2026 Apr 05 0507 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3665
- Begin Time: 2026 Apr 03 0920 UTC
- Yesterday Maximum 2MeV Flux: 2419 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Apr 4th, 2026 10:48:33 pm
Space Weather Message Code: WARK04
- Serial Number: 5312
- Issue Time: 2026 Apr 05 0248 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5311
- Valid From: 2026 Apr 02 0047 UTC
- Now Valid Until: 2026 Apr 05 0900 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: Apr 4th, 2026 7:56:54 pm
Space Weather Message Code: WARK04
- Serial Number: 5311
- Issue Time: 2026 Apr 04 2356 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5310
- Valid From: 2026 Apr 02 0047 UTC
- Now Valid Until: 2026 Apr 05 0300 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: Apr 4th, 2026 7:58:02 am
Space Weather Message Code: ALTEF3
- Serial Number: 3665
- Issue Time: 2026 Apr 04 1158 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3664
- Begin Time: 2026 Apr 03 0920 UTC
- Yesterday Maximum 2MeV Flux: 4465 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Apr 3rd, 2026 9:46:30 pm
Space Weather Message Code: SUMXM5
- Serial Number: 312
- Issue Time: 2026 Apr 04 0146 UTC
- SUMMARY: X-ray Event exceeded M5
- Begin Time: 2026 Apr 04 0107 UTC
- Maximum Time: 2026 Apr 04 0117 UTC
- End Time: 2026 Apr 04 0123 UTC
- X-ray Class: M7.5
- Location: N04W04
- 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: Apr 3rd, 2026 10:54:27 pm
Space Weather Message Code: ALTK05
- Serial Number: 2006
- Issue Time: 2026 Apr 04 0254 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2026 Apr 04 0248 UTC
- Synoptic Period: 0000-0300 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: Apr 3rd, 2026 9:17:22 pm
Space Weather Message Code: ALTXMF
- Serial Number: 522
- Issue Time: 2026 Apr 04 0117 UTC
- ALERT: X-Ray Flux exceeded M5
- Threshold Reached: 2026 Apr 04 0117 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: Apr 3rd, 2026 7:10:11 pm
Space Weather Message Code: WARK06
- Serial Number: 653
- Issue Time: 2026 Apr 03 2310 UTC
- EXTENDED WARNING: Geomagnetic K-Index of 6 expected
- Extension to Serial Number: 652
- Valid From: 2026 Apr 03 1551 UTC
- Now Valid Until: 2026 Apr 04 0600 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 55 degrees Geomagnetic Latitude.
- Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
- Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
- Radio - HF (high frequency) radio propagation can fade at higher latitudes.
- Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
Geophysical Alert Message Issued: Apr 3rd, 2026 5:41:04 pm
Space Weather Message Code: ALTK05
- Serial Number: 2005
- Issue Time: 2026 Apr 03 2141 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2026 Apr 03 2140 UTC
- Synoptic Period: 2100-2400 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: Apr 3rd, 2026 5:01:33 pm
Space Weather Message Code: ALTK06
- Serial Number: 711
- Issue Time: 2026 Apr 03 2101 UTC
- ALERT: Geomagnetic K-index of 6
- Threshold Reached: 2026 Apr 03 2059 UTC
- Synoptic Period: 1800-2100 UTC
- Active Warning: Yes
- NOAA Scale: G2 - Moderate
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
- Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
- Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
- Radio - HF (high frequency) radio propagation can fade at higher latitudes.
- Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
