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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: Jun 4th, 2025 10:04:35 am
Space Weather Message Code: WARK06
- Serial Number: 590
- Issue Time: 2025 Jun 04 1404 UTC
- WARNING: Geomagnetic K-Index of 6 expected
- Valid From: 2025 Jun 04 1404 UTC
- Valid To: 2025 Jun 04 2100 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: Jun 4th, 2025 9:58:45 am
Space Weather Message Code: ALTK05
- Serial Number: 1804
- Issue Time: 2025 Jun 04 1358 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Jun 04 1358 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: Jun 4th, 2025 8:51:27 am
Space Weather Message Code: WARK05
- Serial Number: 2057
- Issue Time: 2025 Jun 04 1251 UTC
- WARNING: Geomagnetic K-index of 5 expected
- Valid From: 2025 Jun 04 1248 UTC
- Valid To: 2025 Jun 04 2100 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: Jun 4th, 2025 4:20:44 am
Space Weather Message Code: WARK04
- Serial Number: 4984
- Issue Time: 2025 Jun 04 0820 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 4983
- Valid From: 2025 May 28 1747 UTC
- Now Valid Until: 2025 Jun 04 1800 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: Jun 4th, 2025 1:00:21 am
Space Weather Message Code: ALTEF3
- Serial Number: 3477
- Issue Time: 2025 Jun 04 0500 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3476
- Begin Time: 2025 Jun 02 1505 UTC
- Yesterday Maximum 2MeV Flux: 2400 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Jun 3rd, 2025 2:12:05 pm
Space Weather Message Code: WARK04
- Serial Number: 4983
- Issue Time: 2025 Jun 03 1812 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 4982
- Valid From: 2025 May 28 1747 UTC
- Now Valid Until: 2025 Jun 04 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.
Geophysical Alert Message Issued: Jun 3rd, 2025 1:59:11 pm
Space Weather Message Code: WARK05
- Serial Number: 2056
- Issue Time: 2025 Jun 03 1759 UTC
- EXTENDED WARNING: Geomagnetic K-index of 5 expected
- Extension to Serial Number: 2055
- Valid From: 2025 Jun 01 0054 UTC
- Now Valid Until: 2025 Jun 04 0600 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: Jun 3rd, 2025 12:32:57 pm
Space Weather Message Code: ALTK05
- Serial Number: 1803
- Issue Time: 2025 Jun 03 1632 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Jun 03 1632 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: Jun 3rd, 2025 10:59:13 am
Space Weather Message Code: ALTK06
- Serial Number: 645
- Issue Time: 2025 Jun 03 1459 UTC
- ALERT: Geomagnetic K-index of 6
- Threshold Reached: 2025 Jun 03 1459 UTC
- Synoptic Period: 1200-1500 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: Jun 3rd, 2025 10:07:42 am
Space Weather Message Code: ALTK05
- Serial Number: 1802
- Issue Time: 2025 Jun 03 1407 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Jun 03 1407 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.
