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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 7th, 2025 7:46:37 pm
Space Weather Message Code: ALTTP2
- Serial Number: 1452
- Issue Time: 2025 Dec 08 0046 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2025 Dec 08 0017 UTC
- Estimated Velocity: 317 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 7th, 2025 4:39:36 pm
Space Weather Message Code: ALTEF3
- Serial Number: 3573
- Issue Time: 2025 Dec 07 2139 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3572
- Begin Time: 2025 Dec 05 1530 UTC
- Yesterday Maximum 2MeV Flux: 2135 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Dec 7th, 2025 1:01:41 am
Space Weather Message Code: ALTK04
- Serial Number: 2614
- Issue Time: 2025 Dec 07 0601 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2025 Dec 07 0559 UTC
- Synoptic Period: 0300-0600 UTC
- Active Warning: Yes
- 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 6th, 2025 11:43:00 pm
Space Weather Message Code: WATA50
- Serial Number: 94
- Issue Time: 2025 Dec 07 0443 UTC
- WATCH: Geomagnetic Storm Category G3 Predicted
- Highest Storm Level Predicted by Day:
- Dec 08: G1 (Minor) Dec 09: G3 (Strong) Dec 10: G1 (Minor)
- THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
- Comment: Watches for G3 (Strong) on 09 Dec and G1 (Minor) on 10 Dec are in anticipation of CME arrival from the M8 flare at 06/2039 UTC.
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
- Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
- Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
- Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
- Radio - HF (high frequency) radio may be intermittent.
- Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
Geophysical Alert Message Issued: Dec 6th, 2025 11:23:19 pm
Space Weather Message Code: WARK04
- Serial Number: 5176
- Issue Time: 2025 Dec 07 0423 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2025 Dec 07 0422 UTC
- Valid To: 2025 Dec 07 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.
Geophysical Alert Message Issued: Dec 6th, 2025 4:07:43 pm
Space Weather Message Code: ALTTP4
- Serial Number: 698
- Issue Time: 2025 Dec 06 2107 UTC
- ALERT: Type IV Radio Emission
- Begin Time: 2025 Dec 06 2057 UTC
- Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
Geophysical Alert Message Issued: Dec 6th, 2025 3:54:09 pm
Space Weather Message Code: SUM10R
- Serial Number: 892
- Issue Time: 2025 Dec 06 2054 UTC
- SUMMARY: 10cm Radio Burst
- Begin Time: 2025 Dec 06 2035 UTC
- Maximum Time: 2025 Dec 06 2036 UTC
- End Time: 2025 Dec 06 2039 UTC
- Duration: 4 minutes
- Peak Flux: 1100 sfu
- Latest Penticton Noon Flux: 200 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 6th, 2025 3:57:30 pm
Space Weather Message Code: SUMXM5
- Serial Number: 301
- Issue Time: 2025 Dec 06 2057 UTC
- SUMMARY: X-ray Event exceeded M5
- Begin Time: 2025 Dec 06 2029 UTC
- Maximum Time: 2025 Dec 06 2039 UTC
- End Time: 2025 Dec 06 2049 UTC
- X-ray Class: M8.1
- Optical Class: 2b
- Location: N20E01
- 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: Dec 6th, 2025 3:51:38 pm
Space Weather Message Code: ALTTP2
- Serial Number: 1451
- Issue Time: 2025 Dec 06 2051 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2025 Dec 06 2040 UTC
- Estimated Velocity: 1143 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 6th, 2025 3:41:32 pm
Space Weather Message Code: ALTXMF
- Serial Number: 504
- Issue Time: 2025 Dec 06 2041 UTC
- ALERT: X-Ray Flux exceeded M5
- Threshold Reached: 2025 Dec 06 2037 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.
