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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: Dec 31st, 2025 8:36:06 am
Space Weather Message Code: WARK04
- Serial Number: 5198
- Issue Time: 2025 Dec 31 1336 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2025 Dec 31 1335 UTC
- Valid To: 2025 Dec 31 2100 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: Dec 30th, 2025 12:02:03 am
Space Weather Message Code: ALTEF3
- Serial Number: 3590
- Issue Time: 2025 Dec 30 0502 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3589
- Begin Time: 2025 Dec 21 1425 UTC
- Yesterday Maximum 2MeV Flux: 6690 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Dec 29th, 2025 10:42:38 am
Space Weather Message Code: WATA20
- Serial Number: 1084
- Issue Time: 2025 Dec 29 1542 UTC
- WATCH: Geomagnetic Storm Category G1 Predicted
- Highest Storm Level Predicted by Day:
- Dec 30: None (Below G1) Dec 31: None (Below G1) Jan 01: G1 (Minor)
- THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
- 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: Dec 29th, 2025 3:06:39 am
Space Weather Message Code: ALTEF3
- Serial Number: 3589
- Issue Time: 2025 Dec 29 0806 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3588
- Begin Time: 2025 Dec 21 1425 UTC
- Yesterday Maximum 2MeV Flux: 8999 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Dec 28th, 2025 5:55:06 pm
Space Weather Message Code: SUM10R
- Serial Number: 897
- Issue Time: 2025 Dec 28 2255 UTC
- SUMMARY: 10cm Radio Burst
- Begin Time: 2025 Dec 28 2225 UTC
- Maximum Time: 2025 Dec 28 2231 UTC
- End Time: 2025 Dec 28 2236 UTC
- Duration: 11 minutes
- Peak Flux: 300 sfu
- Latest Penticton Noon Flux: 188 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: Dec 27th, 2025 11:59:18 pm
Space Weather Message Code: ALTEF3
- Serial Number: 3588
- Issue Time: 2025 Dec 28 0459 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3587
- Begin Time: 2025 Dec 21 1425 UTC
- Yesterday Maximum 2MeV Flux: 6123 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Dec 27th, 2025 12:07:22 am
Space Weather Message Code: ALTEF3
- Serial Number: 3587
- Issue Time: 2025 Dec 27 0507 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3586
- Begin Time: 2025 Dec 21 1425 UTC
- Yesterday Maximum 2MeV Flux: 8195 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Dec 26th, 2025 8:56:39 pm
Space Weather Message Code: SUM10R
- Serial Number: 896
- Issue Time: 2025 Dec 27 0156 UTC
- SUMMARY: 10cm Radio Burst
- Begin Time: 2025 Dec 27 0144 UTC
- Maximum Time: 2025 Dec 27 0144 UTC
- End Time: 2025 Dec 27 0146 UTC
- Duration: 2 minutes
- Peak Flux: 190 sfu
- Latest Penticton Noon Flux: 166 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: Dec 26th, 2025 9:04:03 pm
Space Weather Message Code: ALTTP2
- Serial Number: 1460
- Issue Time: 2025 Dec 27 0204 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2025 Dec 27 0147 UTC
- Estimated Velocity: 788 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: Dec 26th, 2025 9:15:23 pm
Space Weather Message Code: SUMXM5
- Serial Number: 302
- Issue Time: 2025 Dec 27 0215 UTC
- SUMMARY: X-ray Event exceeded M5
- Begin Time: 2025 Dec 27 0138 UTC
- Maximum Time: 2025 Dec 27 0150 UTC
- End Time: 2025 Dec 27 0159 UTC
- X-ray Class: M5.1
- Location: S09E73
- 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.
