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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 5th, 2025 6:09:18 am
Space Weather Message Code: ALTXMF
- Serial Number: 495
- Issue Time: 2025 Nov 05 1109 UTC
- ALERT: X-Ray Flux exceeded M5
- Threshold Reached: 2025 Nov 05 1106 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: Nov 5th, 2025 3:54:54 am
Space Weather Message Code: WARK04
- Serial Number: 5137
- Issue Time: 2025 Nov 05 0854 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5136
- Valid From: 2025 Nov 05 0137 UTC
- Now Valid Until: 2025 Nov 05 1800 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 4th, 2025 8:42:30 pm
Space Weather Message Code: ALTK04
- Serial Number: 2604
- Issue Time: 2025 Nov 05 0142 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2025 Nov 05 0133 UTC
- Synoptic Period: 0000-0300 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: Nov 4th, 2025 8:37:06 pm
Space Weather Message Code: WARK04
- Serial Number: 5136
- Issue Time: 2025 Nov 05 0137 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2025 Nov 05 0137 UTC
- Valid To: 2025 Nov 05 0900 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 4th, 2025 5:31:48 pm
Space Weather Message Code: ALTTP4
- Serial Number: 690
- Issue Time: 2025 Nov 04 2231 UTC
- ALERT: Type IV Radio Emission
- Begin Time: 2025 Nov 04 1729 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: Nov 4th, 2025 5:21:59 pm
Space Weather Message Code: SUMX01
- Serial Number: 198
- Issue Time: 2025 Nov 04 2221 UTC
- SUMMARY: X-ray Event exceeded X1
- Begin Time: 2025 Nov 04 2145 UTC
- Maximum Time: 2025 Nov 04 2201 UTC
- End Time: 2025 Nov 04 2211 UTC
- X-ray Class: X1.1
- Optical Class: na
- Location: S13E72
- NOAA Scale: R3 - Strong
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
- Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
Geophysical Alert Message Issued: Nov 4th, 2025 5:00:24 pm
Space Weather Message Code: ALTXMF
- Serial Number: 494
- Issue Time: 2025 Nov 04 2200 UTC
- ALERT: X-Ray Flux exceeded M5
- Threshold Reached: 2025 Nov 04 2157 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: Nov 4th, 2025 4:40:41 pm
Space Weather Message Code: WATA20
- Serial Number: 1075
- Issue Time: 2025 Nov 04 2140 UTC
- WATCH: Geomagnetic Storm Category G1 Predicted
- Highest Storm Level Predicted by Day:
- Nov 05: None (Below G1) Nov 06: G1 (Minor) Nov 07: 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: Nov 4th, 2025 12:55:30 pm
Space Weather Message Code: SUMX01
- Serial Number: 197
- Issue Time: 2025 Nov 04 1755 UTC
- SUMMARY: X-ray Event exceeded X1
- Begin Time: 2025 Nov 04 1725 UTC
- Maximum Time: 2025 Nov 04 1734 UTC
- End Time: 2025 Nov 04 1751 UTC
- X-ray Class: X1.8
- Location: N24E54
- NOAA Scale: R3 - Strong
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
- Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
Geophysical Alert Message Issued: Nov 4th, 2025 12:57:51 pm
Space Weather Message Code: SUM10R
- Serial Number: 882
- Issue Time: 2025 Nov 04 1757 UTC
- SUMMARY: 10cm Radio Burst
- Begin Time: 2025 Nov 04 1724 UTC
- Maximum Time: 2025 Nov 04 1725 UTC
- End Time: 2025 Nov 04 1727 UTC
- Duration: 3 minutes
- Peak Flux: 160 sfu
- Latest Penticton Noon Flux: 133 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.
