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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: Sep 30th, 2025 2:49:10 am
Space Weather Message Code: ALTK06
- Serial Number: 656
- Issue Time: 2025 Sep 30 0649 UTC
- ALERT: Geomagnetic K-index of 6
- Threshold Reached: 2025 Sep 30 0644 UTC
- Synoptic Period: 0600-0900 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: Sep 30th, 2025 2:31:42 am
Space Weather Message Code: ALTK05
- Serial Number: 1859
- Issue Time: 2025 Sep 30 0631 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Sep 30 0625 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.
Geophysical Alert Message Issued: Sep 30th, 2025 1:31:07 am
Space Weather Message Code: ALTK07
- Serial Number: 191
- Issue Time: 2025 Sep 30 0531 UTC
- ALERT: Geomagnetic K-index of 7
- Threshold Reached: 2025 Sep 30 0525 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: Sep 30th, 2025 12:57:09 am
Space Weather Message Code: WARK05
- Serial Number: 2106
- Issue Time: 2025 Sep 30 0457 UTC
- EXTENDED WARNING: Geomagnetic K-index of 5 expected
- Extension to Serial Number: 2105
- Valid From: 2025 Sep 30 0114 UTC
- Now Valid Until: 2025 Sep 30 1500 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 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: Sep 30th, 2025 12:11:07 am
Space Weather Message Code: ALTK06
- Serial Number: 655
- Issue Time: 2025 Sep 30 0411 UTC
- ALERT: Geomagnetic K-index of 6
- Threshold Reached: 2025 Sep 30 0402 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: Sep 29th, 2025 10:47:13 pm
Space Weather Message Code: ALTK05
- Serial Number: 1857
- Issue Time: 2025 Sep 30 0247 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Sep 30 0243 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: Sep 29th, 2025 10:52:41 pm
Space Weather Message Code: WARK06
- Serial Number: 606
- Issue Time: 2025 Sep 30 0252 UTC
- WARNING: Geomagnetic K-Index of 6 expected
- Valid From: 2025 Sep 30 0252 UTC
- Valid To: 2025 Sep 30 0900 UTC
- Warning Condition: Onset
- 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: Sep 29th, 2025 11:41:18 pm
Space Weather Message Code: ALTK05
- Serial Number: 1858
- Issue Time: 2025 Sep 30 0341 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Sep 30 0337 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: Sep 29th, 2025 9:15:31 pm
Space Weather Message Code: WARK04
- Serial Number: 5089
- Issue Time: 2025 Sep 30 0115 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5088
- Valid From: 2025 Sep 29 0645 UTC
- Now Valid Until: 2025 Sep 30 1500 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: Sep 29th, 2025 7:25:16 pm
Space Weather Message Code: WARK04
- Serial Number: 5088
- Issue Time: 2025 Sep 29 2325 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5087
- Valid From: 2025 Sep 29 0645 UTC
- Now Valid Until: 2025 Sep 30 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 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.
