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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 12th, 2025 7:03:59 pm
Space Weather Message Code: ALTK05
- Serial Number: 1910
- Issue Time: 2025 Nov 13 0003 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Nov 12 2359 UTC
- Synoptic Period: 2100-0000 UTC
- Active Warning: Yes
- NOAA Scale: G1 - Minor
- 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 12th, 2025 6:56:47 pm
Space Weather Message Code: WARPX1
- Serial Number: 614
- Issue Time: 2025 Nov 12 2356 UTC
- EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
- Extension to Serial Number: 613
- Valid From: 2025 Nov 10 1030 UTC
- Now Valid Until: 2025 Nov 13 1200 UTC
- Warning Condition: Persistence
- Predicted NOAA Scale: S1 - Minor
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.
Geophysical Alert Message Issued: Nov 12th, 2025 6:54:59 pm
Space Weather Message Code: WARPC0
- Serial Number: 120
- Issue Time: 2025 Nov 12 2354 UTC
- EXTENDED WARNING: Proton 100MeV Integral Flux above 1pfu expected
- Extension to Serial Number: 119
- Valid From: 2025 Nov 11 1028 UTC
- Now Valid Until: 2025 Nov 13 0600 UTC
- Warning Condition: Persistence
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: An enhancement in the energetic portion of the solar radiation spectrum may indicate increased biological risk to astronauts or passengers and crew in high latitude, high altitude flights. Additionally, energetic particles may represent an increased risk to all satellite systems susceptible to single event effects. This information should be used in conjunction with the current Solar Radiation Storm conditions when assessing overall impact.
Geophysical Alert Message Issued: Nov 12th, 2025 6:38:11 pm
Space Weather Message Code: SUMPX3
- Serial Number: 21
- Issue Time: 2025 Nov 12 2338 UTC
- SUMMARY: Proton Event 10MeV Integral Flux exceeded 1000pfu
- Begin Time: 2025 Nov 12 0145 UTC
- Maximum Time: 2025 Nov 12 0215 UTC
- End Time: 2025 Nov 12 0310 UTC
- Maximum 10MeV Flux: 1460 pfu
- NOAA Scale: S3 - Strong
- Comment: Final CME shock appears to have arrived at L1 at approximately 12/1853 UTC. The corresponding proton enhancement in GEO reached 819 pfu at 12/1915 UTC. S3 levels are no longer expected.
- WC
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
Geophysical Alert Message Issued: Nov 12th, 2025 3:54:56 pm
Space Weather Message Code: WARK06
- Serial Number: 623
- Issue Time: 2025 Nov 12 2054 UTC
- EXTENDED WARNING: Geomagnetic K-Index of 6 expected
- Extension to Serial Number: 622
- Valid From: 2025 Nov 11 2344 UTC
- Now Valid Until: 2025 Nov 13 0900 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 55 degrees Geomagnetic Latitude.
- Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
- Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
- Radio - HF (high frequency) radio propagation can fade at higher latitudes.
- Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
Geophysical Alert Message Issued: Nov 12th, 2025 3:52:16 pm
Space Weather Message Code: ALTK06
- Serial Number: 673
- Issue Time: 2025 Nov 12 2052 UTC
- ALERT: Geomagnetic K-index of 6
- Threshold Reached: 2025 Nov 12 2051 UTC
- Synoptic Period: 1800-2100 UTC
- Active Warning: Yes
- NOAA Scale: G2 - Moderate
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
- Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
- Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
- Radio - HF (high frequency) radio propagation can fade at higher latitudes.
- Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
Geophysical Alert Message Issued: Nov 12th, 2025 3:11:34 pm
Space Weather Message Code: ALTK05
- Serial Number: 1909
- Issue Time: 2025 Nov 12 2011 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Nov 12 2009 UTC
- Synoptic Period: 1800-2100 UTC
- Active Warning: Yes
- NOAA Scale: G1 - Minor
- 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 12th, 2025 2:38:09 pm
Space Weather Message Code: SUMSUD
- Serial Number: 291
- Issue Time: 2025 Nov 12 1938 UTC
- SUMMARY: Geomagnetic Sudden Impulse
- Observed: 2025 Nov 12 1917 UTC
- Deviation: 33 nT
- Station: FRD
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
Geophysical Alert Message Issued: Nov 12th, 2025 2:04:28 pm
Space Weather Message Code: WARSUD
- Serial Number: 247
- Issue Time: 2025 Nov 12 1904 UTC
- WARNING: Geomagnetic Sudden Impulse expected
- Valid From: 2025 Nov 12 1915 UTC
- Valid To: 2025 Nov 12 1945 UTC
- IP Shock Passage Observed: 2025 Nov 12 1853 UTC
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
Geophysical Alert Message Issued: Nov 12th, 2025 1:05:02 pm
Space Weather Message Code: WATA99
- Serial Number: 12
- Issue Time: 2025 Nov 12 1805 UTC
- WATCH: Geomagnetic Storm Category G4 or Greater Predicted
- Highest Storm Level Predicted by Day:
- Nov 13: G4 (Severe) Nov 14: G1 (Minor) Nov 15: None (Below G1)
- 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 45 degrees Geomagnetic Latitude.
- Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
- Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
- Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
- Radio - HF (high frequency) radio propagation sporadic or blacked out.
- Aurora - Aurora may be seen as low as Alabama and northern California.
