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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 11:46:11 pm
Space Weather Message Code: ALTK05
- Serial Number: 1866
- Issue Time: 2025 Oct 01 0346 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Oct 01 0333 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 30th, 2025 9:02:50 pm
Space Weather Message Code: ALTK05
- Serial Number: 1865
- Issue Time: 2025 Oct 01 0102 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Oct 01 0057 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 30th, 2025 6:39:00 pm
Space Weather Message Code: WATA30
- Serial Number: 256
- Issue Time: 2025 Sep 30 2238 UTC
- WATCH: Geomagnetic Storm Category G2 Predicted
- Highest Storm Level Predicted by Day:
- Oct 01: G2 (Moderate) Oct 02: None (Below G1) Oct 03: 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 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 6:16:42 pm
Space Weather Message Code: ALTK06
- Serial Number: 660
- Issue Time: 2025 Sep 30 2216 UTC
- ALERT: Geomagnetic K-index of 6
- Threshold Reached: 2025 Sep 30 2207 UTC
- Synoptic Period: 2100-2400 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 5:44:14 pm
Space Weather Message Code: ALTK05
- Serial Number: 1864
- Issue Time: 2025 Sep 30 2144 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Sep 30 2134 UTC
- Synoptic Period: 2100-2400 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 4:54:20 pm
Space Weather Message Code: WARK05
- Serial Number: 2109
- Issue Time: 2025 Sep 30 2054 UTC
- EXTENDED WARNING: Geomagnetic K-index of 5 expected
- Extension to Serial Number: 2108
- Valid From: 2025 Sep 30 0114 UTC
- Now Valid Until: 2025 Oct 01 1200 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 4:55:13 pm
Space Weather Message Code: WARK06
- Serial Number: 610
- Issue Time: 2025 Sep 30 2055 UTC
- EXTENDED WARNING: Geomagnetic K-Index of 6 expected
- Extension to Serial Number: 609
- Valid From: 2025 Sep 30 0252 UTC
- Now Valid Until: 2025 Oct 01 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: Sep 30th, 2025 4:53:27 pm
Space Weather Message Code: WARK04
- Serial Number: 5092
- Issue Time: 2025 Sep 30 2053 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5091
- Valid From: 2025 Sep 29 0645 UTC
- Now Valid Until: 2025 Oct 01 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 30th, 2025 4:24:18 pm
Space Weather Message Code: ALTK06
- Serial Number: 659
- Issue Time: 2025 Sep 30 2024 UTC
- ALERT: Geomagnetic K-index of 6
- Threshold Reached: 2025 Sep 30 2020 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: Sep 30th, 2025 2:53:11 pm
Space Weather Message Code: ALTK05
- Serial Number: 1863
- Issue Time: 2025 Sep 30 1853 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Sep 30 1849 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.
