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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: Jun 18th, 2025 1:01:44 am
Space Weather Message Code: ALTTP2
- Serial Number: 1420
- Issue Time: 2025 Jun 18 0501 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2025 Jun 18 0434 UTC
- Estimated Velocity: 1110 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: Jun 17th, 2025 9:28:30 pm
Space Weather Message Code: WARK04
- Serial Number: 5005
- Issue Time: 2025 Jun 18 0128 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2025 Jun 18 0128 UTC
- Valid To: 2025 Jun 18 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: Jun 17th, 2025 6:37:41 pm
Space Weather Message Code: SUM10R
- Serial Number: 875
- Issue Time: 2025 Jun 17 2237 UTC
- SUMMARY: 10cm Radio Burst
- Begin Time: 2025 Jun 17 2146 UTC
- Maximum Time: 2025 Jun 17 2147 UTC
- End Time: 2025 Jun 17 2147 UTC
- Duration: 1 minutes
- Peak Flux: 200 sfu
- Latest Penticton Noon Flux: 139 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: Jun 17th, 2025 6:04:53 pm
Space Weather Message Code: SUMX01
- Serial Number: 195
- Issue Time: 2025 Jun 17 2204 UTC
- SUMMARY: X-ray Event exceeded X1
- Begin Time: 2025 Jun 17 2138 UTC
- Maximum Time: 2025 Jun 17 2149 UTC
- End Time: 2025 Jun 17 2154 UTC
- X-ray Class: X1.2
- Optical Class: 2b
- Location: N18W10
- 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: Jun 17th, 2025 5:50:25 pm
Space Weather Message Code: ALTXMF
- Serial Number: 489
- Issue Time: 2025 Jun 17 2150 UTC
- ALERT: X-Ray Flux exceeded M5
- Threshold Reached: 2025 Jun 17 2147 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: Jun 17th, 2025 4:27:06 pm
Space Weather Message Code: WATA20
- Serial Number: 1047
- Issue Time: 2025 Jun 17 2027 UTC
- WATCH: Geomagnetic Storm Category G1 Predicted
- Highest Storm Level Predicted by Day:
- Jun 18: None (Below G1) Jun 19: None (Below G1) Jun 20: 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: Jun 17th, 2025 9:50:06 am
Space Weather Message Code: ALTEF3
- Serial Number: 3480
- Issue Time: 2025 Jun 17 1350 UTC
- ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Threshold Reached: 2025 Jun 17 1340 UTC
- Station: GOES19
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Jun 16th, 2025 6:11:33 am
Space Weather Message Code: SUM10R
- Serial Number: 874
- Issue Time: 2025 Jun 16 1011 UTC
- SUMMARY: 10cm Radio Burst
- Begin Time: 2025 Jun 16 0933 UTC
- Maximum Time: 2025 Jun 16 0934 UTC
- End Time: 2025 Jun 16 0941 UTC
- Duration: 8 minutes
- Peak Flux: 530 sfu
- Latest Penticton Noon Flux: 12 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: Jun 16th, 2025 6:13:10 am
Space Weather Message Code: SUMXM5
- Serial Number: 294
- Issue Time: 2025 Jun 16 1013 UTC
- SUMMARY: X-ray Event exceeded M5
- Begin Time: 2025 Jun 16 0917 UTC
- Maximum Time: 2025 Jun 16 0938 UTC
- End Time: 2025 Jun 16 0948 UTC
- X-ray Class: M6.5
- Location: N18E06
- 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: Jun 16th, 2025 5:38:25 am
Space Weather Message Code: ALTXMF
- Serial Number: 488
- Issue Time: 2025 Jun 16 0938 UTC
- ALERT: X-Ray Flux exceeded M5
- Threshold Reached: 2025 Jun 16 0935 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.
