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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 11th, 2025 7:20:18 pm
Space Weather Message Code: WARK07
- Serial Number: 136
- Issue Time: 2025 Nov 12 0020 UTC
- WARNING: Geomagnetic K-index of 7 or greater expected
- Valid From: 2025 Nov 12 0020 UTC
- Valid To: 2025 Nov 12 0900 UTC
- Warning Condition: Onset
- NOAA Scale: G3 or greater
- 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 11th, 2025 7:21:02 pm
Space Weather Message Code: ALTK05
- Serial Number: 1903
- Issue Time: 2025 Nov 12 0021 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Nov 12 0012 UTC
- Synoptic Period: 0000-0300 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 11th, 2025 7:30:30 pm
Space Weather Message Code: ALTK06
- Serial Number: 669
- Issue Time: 2025 Nov 12 0030 UTC
- ALERT: Geomagnetic K-index of 6
- Threshold Reached: 2025 Nov 12 0024 UTC
- Synoptic Period: 0000-0300 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 11th, 2025 7:45:44 pm
Space Weather Message Code: ALTK07
- Serial Number: 194
- Issue Time: 2025 Nov 12 0045 UTC
- ALERT: Geomagnetic K-index of 7
- Threshold Reached: 2025 Nov 12 0040 UTC
- Synoptic Period: 0000-0300 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 11th, 2025 8:22:23 pm
Space Weather Message Code: ALTK08
- Serial Number: 53
- Issue Time: 2025 Nov 12 0122 UTC
- ALERT: Geomagnetic K-index of 8, 9-
- Threshold Reached: 2025 Nov 12 0121 UTC
- Synoptic Period: 0000-0300 UTC
- Active Warning: Yes
- NOAA Scale: G4 - Severe
- 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 11th, 2025 8:55:37 pm
Space Weather Message Code: ALTPX3
- Serial Number: 33
- Issue Time: 2025 Nov 12 0155 UTC
- ALERT: Proton Event 10MeV Integral Flux exceeded 1000pfu
- Begin Time: 2025 Nov 12 0145 UTC
- NOAA Scale: S3 - Strong
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Radiation - Passengers and crew in high latitude, high altitude flights may experience increasing radiation exposures. Astronauts on EVA (extra-vehicular activity) are exposed to elevated radiation levels.
- Spacecraft - Single-event upsets to satellite operations, noise in imaging systems, and slight reduction of efficiency in solar panels are likely.
- Radio - Degraded or episodically blacked-out polar HF (high frequency) radio propagation.
Geophysical Alert Message Issued: Nov 11th, 2025 10:10:02 pm
Space Weather Message Code: ALTK05
- Serial Number: 1904
- Issue Time: 2025 Nov 12 0310 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Nov 12 0305 UTC
- Synoptic Period: 0300-0600 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 11th, 2025 10:11:00 pm
Space Weather Message Code: ALTK06
- Serial Number: 670
- Issue Time: 2025 Nov 12 0311 UTC
- ALERT: Geomagnetic K-index of 6
- Threshold Reached: 2025 Nov 12 0306 UTC
- Synoptic Period: 0300-0600 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 11th, 2025 10:14:49 pm
Space Weather Message Code: ALTK07
- Serial Number: 195
- Issue Time: 2025 Nov 12 0314 UTC
- ALERT: Geomagnetic K-index of 7
- Threshold Reached: 2025 Nov 12 0310 UTC
- Synoptic Period: 0300-0600 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 11th, 2025 10:46:44 pm
Space Weather Message Code: ALTK08
- Serial Number: 54
- Issue Time: 2025 Nov 12 0346 UTC
- ALERT: Geomagnetic K-index of 8, 9-
- Threshold Reached: 2025 Nov 12 0345 UTC
- Synoptic Period: 0300-0600 UTC
- Active Warning: Yes
- NOAA Scale: G4 - Severe
- 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.
