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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: May 13th, 2025 11:37:34 am
Space Weather Message Code: ALTXMF
- Serial Number: 479
- Issue Time: 2025 May 13 1537 UTC
- ALERT: X-Ray Flux exceeded M5
- Threshold Reached: 2025 May 13 1535 UTC
- NOAA Scale: R2 - Moderate
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
Geophysical Alert Message Issued: May 11th, 2025 5:00:56 pm
Space Weather Message Code: ALTK05
- Serial Number: 1769
- Issue Time: 2025 May 11 2100 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 May 11 2058 UTC
- Synoptic Period: 1800-2100 UTC
- Active Warning: No
- 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: May 11th, 2025 5:02:08 pm
Space Weather Message Code: WARK05
- Serial Number: 2041
- Issue Time: 2025 May 11 2102 UTC
- WARNING: Geomagnetic K-index of 5 expected
- Valid From: 2025 May 11 2100 UTC
- Valid To: 2025 May 12 0600 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: May 11th, 2025 4:24:45 pm
Space Weather Message Code: ALTK04
- Serial Number: 2557
- Issue Time: 2025 May 11 2024 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2025 May 11 2021 UTC
- Synoptic Period: 1800-2100 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: May 11th, 2025 10:55:02 am
Space Weather Message Code: WARK04
- Serial Number: 4961
- Issue Time: 2025 May 11 1455 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 4960
- Valid From: 2025 May 11 0420 UTC
- Now Valid Until: 2025 May 12 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: May 11th, 2025 12:20:34 am
Space Weather Message Code: WARK04
- Serial Number: 4960
- Issue Time: 2025 May 11 0420 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2025 May 11 0420 UTC
- Valid To: 2025 May 11 1500 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: May 10th, 2025 6:26:33 am
Space Weather Message Code: WARK05
- Serial Number: 2040
- Issue Time: 2025 May 10 1026 UTC
- CANCEL WARNING: Geomagnetic K-index of 5 expected
- Cancel Serial Number: 2039
- Original Issue Time: 2025 May 09 2348 UTC
- Comment: Geomagnetic K-index of 5 no longer expected.
- 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: May 10th, 2025 2:06:58 am
Space Weather Message Code: WARK04
- Serial Number: 4959
- Issue Time: 2025 May 10 0606 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 4958
- Valid From: 2025 May 09 1953 UTC
- Now Valid Until: 2025 May 10 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: May 10th, 2025 1:59:21 am
Space Weather Message Code: WARK05
- Serial Number: 2039
- Issue Time: 2025 May 10 0559 UTC
- EXTENDED WARNING: Geomagnetic K-index of 5 expected
- Extension to Serial Number: 2038
- Valid From: 2025 May 09 2348 UTC
- Now Valid Until: 2025 May 10 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: May 9th, 2025 7:48:19 pm
Space Weather Message Code: WARK05
- Serial Number: 2038
- Issue Time: 2025 May 09 2348 UTC
- WARNING: Geomagnetic K-index of 5 expected
- Valid From: 2025 May 09 2348 UTC
- Valid To: 2025 May 10 0600 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.
