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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: Oct 21st, 2025 5:08:17 pm
Space Weather Message Code: ALTTP2
- Serial Number: 1434
- Issue Time: 2025 Oct 21 2108 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2025 Oct 21 2007 UTC
- Estimated Velocity: 2474 km/s
- Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
Geophysical Alert Message Issued: Oct 21st, 2025 5:09:33 pm
Space Weather Message Code: ALTTP4
- Serial Number: 687
- Issue Time: 2025 Oct 21 2109 UTC
- ALERT: Type IV Radio Emission
- Begin Time: 2025 Oct 21 2011 UTC
- Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
Geophysical Alert Message Issued: Oct 21st, 2025 5:09:36 am
Space Weather Message Code: WARK04
- Serial Number: 5117
- Issue Time: 2025 Oct 21 0909 UTC
- CANCEL WARNING: Geomagnetic K-index of 4 expected
- Cancel Serial Number: 5116
- Original Issue Time: 2025 Oct 21 0456 UTC
- Comment: The conditions for this warning no longer exist
- 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: Oct 21st, 2025 12:56:03 am
Space Weather Message Code: WARK04
- Serial Number: 5116
- Issue Time: 2025 Oct 21 0456 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2025 Oct 21 0455 UTC
- Valid To: 2025 Oct 21 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: Oct 18th, 2025 8:50:30 pm
Space Weather Message Code: ALTK05
- Serial Number: 1885
- Issue Time: 2025 Oct 19 0050 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Oct 19 0043 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: Oct 18th, 2025 7:40:05 pm
Space Weather Message Code: WARK05
- Serial Number: 2122
- Issue Time: 2025 Oct 18 2340 UTC
- EXTENDED WARNING: Geomagnetic K-index of 5 expected
- Extension to Serial Number: 2121
- Valid From: 2025 Oct 18 1743 UTC
- Now Valid Until: 2025 Oct 19 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 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: Oct 18th, 2025 7:39:21 pm
Space Weather Message Code: WARK04
- Serial Number: 5115
- Issue Time: 2025 Oct 18 2339 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5114
- Valid From: 2025 Oct 18 1726 UTC
- Now Valid Until: 2025 Oct 19 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 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: Oct 18th, 2025 4:13:08 pm
Space Weather Message Code: ALTK06
- Serial Number: 664
- Issue Time: 2025 Oct 18 2013 UTC
- ALERT: Geomagnetic K-index of 6
- Threshold Reached: 2025 Oct 18 2012 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: Oct 18th, 2025 3:53:04 pm
Space Weather Message Code: WARK06
- Serial Number: 615
- Issue Time: 2025 Oct 18 1953 UTC
- WARNING: Geomagnetic K-Index of 6 expected
- Valid From: 2025 Oct 18 1952 UTC
- Valid To: 2025 Oct 18 2359 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: Oct 18th, 2025 3:47:41 pm
Space Weather Message Code: ALTK05
- Serial Number: 1884
- Issue Time: 2025 Oct 18 1947 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Oct 18 1947 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.
