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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 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.
Geophysical Alert Message Issued: Nov 12th, 2025 12:36:40 pm
Space Weather Message Code: ALTK05
- Serial Number: 1908
- Issue Time: 2025 Nov 12 1736 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Nov 12 1719 UTC
- Synoptic Period: 1500-1800 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 7:51:03 am
Space Weather Message Code: ALTK05
- Serial Number: 1907
- Issue Time: 2025 Nov 12 1251 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Nov 12 1240 UTC
- Synoptic Period: 1200-1500 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 6:51:12 am
Space Weather Message Code: WARPC0
- Serial Number: 119
- Issue Time: 2025 Nov 12 1151 UTC
- EXTENDED WARNING: Proton 100MeV Integral Flux above 1pfu expected
- Extension to Serial Number: 118
- Valid From: 2025 Nov 11 1028 UTC
- Now Valid Until: 2025 Nov 12 2359 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 5:38:02 am
Space Weather Message Code: ALTK07
- Serial Number: 197
- Issue Time: 2025 Nov 12 1038 UTC
- ALERT: Geomagnetic K-index of 7
- Threshold Reached: 2025 Nov 12 1033 UTC
- Synoptic Period: 0900-1200 UTC
- Active Warning: Yes
- NOAA Scale: G3 - Strong
- 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: Nov 12th, 2025 4:35:36 am
Space Weather Message Code: ALTK06
- Serial Number: 672
- Issue Time: 2025 Nov 12 0935 UTC
- ALERT: Geomagnetic K-index of 6
- Threshold Reached: 2025 Nov 12 0931 UTC
- Synoptic Period: 0900-1200 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 4:19:21 am
Space Weather Message Code: ALTK05
- Serial Number: 1906
- Issue Time: 2025 Nov 12 0919 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Nov 12 0912 UTC
- Synoptic Period: 0900-1200 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 3:59:18 am
Space Weather Message Code: ALTK07
- Serial Number: 196
- Issue Time: 2025 Nov 12 0859 UTC
- ALERT: Geomagnetic K-index of 7
- Threshold Reached: 2025 Nov 12 0859 UTC
- Synoptic Period: 0600-0900 UTC
- Active Warning: Yes
- NOAA Scale: G3 - Strong
- 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: Nov 12th, 2025 3:37:13 am
Space Weather Message Code: WARK07
- Serial Number: 137
- Issue Time: 2025 Nov 12 0837 UTC
- EXTENDED WARNING: Geomagnetic K-index of 7 or greater expected
- Extension to Serial Number: 136
- Valid From: 2025 Nov 12 0020 UTC
- Now Valid Until: 2025 Nov 12 2100 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 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: Nov 12th, 2025 1:59:52 am
Space Weather Message Code: ALTK05
- Serial Number: 1905
- Issue Time: 2025 Nov 12 0659 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Nov 12 0655 UTC
- Synoptic Period: 0600-0900 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.
