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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 24th, 2026 6:36:29 am
Space Weather Message Code: ALTEF3
- Serial Number: 3727
- Issue Time: 2026 Aug 24 1036 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1,000pfu
- Continuation of Serial Number: 3726
- Begin Time: 2026 Aug 21 1105 UTC
- Yesterday Maximum 2MeV Flux: 1026 pfu
- Max time: 2026 Aug 24 1030 UTC
Geophysical Alert Message Issued: Aug 23rd, 2026 5:21:33 am
Space Weather Message Code: ALTEF3
- Serial Number: 3726
- Issue Time: 2026 Aug 23 0921 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1,000pfu
- Continuation of Serial Number: 3725
- Begin Time: 2026 Aug 21 1105 UTC
- Yesterday Maximum 2MeV Flux: 1000 pfu
- Max time: 2026 Aug 23 0915 UTC
Geophysical Alert Message Issued: Aug 22nd, 2026 1:00:22 am
Space Weather Message Code: ALTEF3
- Serial Number: 3725
- Issue Time: 2026 Aug 22 0500 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1,000pfu
- Continuation of Serial Number: 3724
- Begin Time: 2026 Aug 21 1105 UTC
- Yesterday Maximum 2MeV Flux: 1062 pfu
- Max time: 2026 Aug 22 0450 UTC
Geophysical Alert Message Issued: Aug 21st, 2026 7:18:00 am
Space Weather Message Code: ALTEF3
- Serial Number: 3724
- Issue Time: 2026 Aug 21 1118 UTC
- ALERT: Electron 2MeV Integral Flux exceeded 1,000pfu
- Threshold Reached: 2026 Aug 21 1105 UTC
- Station: GOES-19
- Comment:
Geophysical Alert Message Issued: Aug 21st, 2026 5:45:55 am
Space Weather Message Code: SUM10R
- Serial Number: 926
- Issue Time: 2026 Aug 21 0945 UTC
- SUMMARY: 10cm Radio Burst
- Begin Time: 2026 Aug 21 0926 UTC
- Maximum Time: 2026 Aug 21 0932 UTC
- End Time: 2026 Aug 21 0934 UTC
- Peak Flux: 140 sfu
- Duration: 8 minutes
- Latest Penticton Noon Flux: 125 sfu
- Comment: observed by LEA station
Geophysical Alert Message Issued: Aug 20th, 2026 4:49:09 pm
Space Weather Message Code: ALTTP2
- Serial Number: 1523
- Issue Time: 2026 Aug 20 2049 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2026 Aug 20 1848 UTC
- Estimate Velocity: 927 km/s
- Comment:
Geophysical Alert Message Issued: Aug 20th, 2026 8:12:01 am
Space Weather Message Code: SUMXM5
- Serial Number: 325
- Issue Time: 2026 Aug 20 1212 UTC
- SUMMARY: X-ray Event exceeded M5
- Begin Time: 2026 Aug 20 1132 UTC
- Maximum Time: 2026 Aug 20 1142 UTC
- End Time: 2026 Aug 20 1154 UTC
- Xray Class: M8.1
- Optical Class: Sf
- Location: N04E85
- Noaa Scale: R2 - Moderate
- Comment:
- 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: Aug 20th, 2026 7:58:35 am
Space Weather Message Code: ALTTP2
- Serial Number: 1522
- Issue Time: 2026 Aug 20 1158 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2026 Aug 20 1136 UTC
- Estimate Velocity: 1201 km/s
- Comment: SVI
Geophysical Alert Message Issued: Aug 20th, 2026 7:39:30 am
Space Weather Message Code: ALTXMF
- Serial Number: 540
- Issue Time: 2026 Aug 20 1139 UTC
- ALERT: X-Ray Flux exceeded M5
- Threshold Reached: 2026 Aug 20 1138 UTC
- Noaa Scale: R2 - Moderate
- Comment:
- 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: Aug 19th, 2026 1:57:55 pm
Space Weather Message Code: WARK04
- Serial Number: 5406
- Issue Time: 2026 Aug 19 1757 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5405
- Valid From: 2026 Aug 17 2101 UTC
- Now Valid Until: 2026 Aug 20 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.


