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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 14th, 2025 10:55:00 pm
Space Weather Message Code: WARK07
- Serial Number: 132
- Issue Time: 2025 Sep 15 0255 UTC
- WARNING: Geomagnetic K-index of 7 or greater expected
- Valid From: 2025 Sep 15 0254 UTC
- Valid To: 2025 Sep 15 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: Sep 14th, 2025 10:59:45 pm
Space Weather Message Code: ALTK07
- Serial Number: 190
- Issue Time: 2025 Sep 15 0259 UTC
- ALERT: Geomagnetic K-index of 7
- Threshold Reached: 2025 Sep 15 0259 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: Sep 14th, 2025 11:32:01 pm
Space Weather Message Code: ALTK05
- Serial Number: 1849
- Issue Time: 2025 Sep 15 0332 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Sep 15 0326 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 14th, 2025 8:55:39 pm
Space Weather Message Code: WARK06
- Serial Number: 603
- Issue Time: 2025 Sep 15 0055 UTC
- WARNING: Geomagnetic K-Index of 6 expected
- Valid From: 2025 Sep 15 0055 UTC
- Valid To: 2025 Sep 15 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 14th, 2025 7:47:13 pm
Space Weather Message Code: ALTK05
- Serial Number: 1848
- Issue Time: 2025 Sep 14 2347 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Sep 14 2341 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 14th, 2025 7:29:41 pm
Space Weather Message Code: WARK05
- Serial Number: 2099
- Issue Time: 2025 Sep 14 2329 UTC
- WARNING: Geomagnetic K-index of 5 expected
- Valid From: 2025 Sep 14 2330 UTC
- Valid To: 2025 Sep 15 0900 UTC
- Warning Condition: Onset
- 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 14th, 2025 7:22:03 pm
Space Weather Message Code: ALTK04
- Serial Number: 2591
- Issue Time: 2025 Sep 14 2322 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2025 Sep 14 2311 UTC
- Synoptic Period: 2100-2400 UTC
- Active Warning: Yes
- 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 14th, 2025 4:17:19 pm
Space Weather Message Code: WARK04
- Serial Number: 5078
- Issue Time: 2025 Sep 14 2017 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2025 Sep 14 2015 UTC
- Valid To: 2025 Sep 15 1200 UTC
- Warning Condition: Onset
- 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 14th, 2025 2:51:30 pm
Space Weather Message Code: ALTEF3
- Serial Number: 3524
- Issue Time: 2025 Sep 14 1851 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3523
- Begin Time: 2025 Sep 13 1820 UTC
- Yesterday Maximum 2MeV Flux: 1181 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Sep 14th, 2025 2:46:13 pm
Space Weather Message Code: WATA20
- Serial Number: 1063
- Issue Time: 2025 Sep 14 1846 UTC
- WATCH: Geomagnetic Storm Category G1 Predicted
- Highest Storm Level Predicted by Day:
- Sep 15: G1 (Minor) Sep 16: None (Below G1) Sep 17: 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 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.
