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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: Nov 30th, 2025 11:03:30 pm
Space Weather Message Code: ALTTP2
- Serial Number: 1449
- Issue Time: 2025 Dec 01 0403 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2025 Dec 01 0319 UTC
- Estimated Velocity: 490 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: Nov 30th, 2025 11:59:40 pm
Space Weather Message Code: ALTEF3
- Serial Number: 3568
- Issue Time: 2025 Dec 01 0459 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3567
- Begin Time: 2025 Nov 25 1450 UTC
- Yesterday Maximum 2MeV Flux: 8310 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Nov 30th, 2025 7:54:50 pm
Space Weather Message Code: WARK04
- Serial Number: 5170
- Issue Time: 2025 Dec 01 0054 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2025 Dec 01 0053 UTC
- Valid To: 2025 Dec 01 1200 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: Nov 29th, 2025 11:59:53 pm
Space Weather Message Code: ALTEF3
- Serial Number: 3567
- Issue Time: 2025 Nov 30 0459 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3566
- Begin Time: 2025 Nov 25 1450 UTC
- Yesterday Maximum 2MeV Flux: 23005 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Nov 29th, 2025 6:55:09 pm
Space Weather Message Code: WARK04
- Serial Number: 5169
- Issue Time: 2025 Nov 29 2355 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5168
- Valid From: 2025 Nov 24 0226 UTC
- Now Valid Until: 2025 Nov 30 1200 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: Nov 29th, 2025 3:57:45 pm
Space Weather Message Code: SUM10R
- Serial Number: 891
- Issue Time: 2025 Nov 29 2057 UTC
- SUMMARY: 10cm Radio Burst
- Begin Time: 2025 Nov 29 2011 UTC
- Maximum Time: 2025 Nov 29 2012 UTC
- End Time: 2025 Nov 29 2013 UTC
- Duration: 2 minutes
- Peak Flux: 170 sfu
- Latest Penticton Noon Flux: 160 sfu
- Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
Geophysical Alert Message Issued: Nov 29th, 2025 6:58:34 am
Space Weather Message Code: WARK04
- Serial Number: 5168
- Issue Time: 2025 Nov 29 1158 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5167
- Valid From: 2025 Nov 24 0226 UTC
- Now Valid Until: 2025 Nov 29 2359 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: Nov 29th, 2025 12:00:21 am
Space Weather Message Code: ALTEF3
- Serial Number: 3566
- Issue Time: 2025 Nov 29 0500 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3565
- Begin Time: 2025 Nov 25 1450 UTC
- Yesterday Maximum 2MeV Flux: 14759 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Nov 28th, 2025 9:00:21 pm
Space Weather Message Code: SUM10R
- Serial Number: 890
- Issue Time: 2025 Nov 29 0200 UTC
- SUMMARY: 10cm Radio Burst
- Begin Time: 2025 Nov 29 0143 UTC
- Maximum Time: 2025 Nov 29 0143 UTC
- End Time: 2025 Nov 29 0143 UTC
- Duration: 1 minutes
- Peak Flux: 140 sfu
- Latest Penticton Noon Flux: 138 sfu
- Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
Geophysical Alert Message Issued: Nov 28th, 2025 5:46:40 pm
Space Weather Message Code: SUMXM5
- Serial Number: 299
- Issue Time: 2025 Nov 28 2246 UTC
- SUMMARY: X-ray Event exceeded M5
- Begin Time: 2025 Nov 28 2211 UTC
- Maximum Time: 2025 Nov 28 2222 UTC
- End Time: 2025 Nov 28 2224 UTC
- X-ray Class: M5.9
- Location: S16E80
- 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.
