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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 30th, 2025 6:13:59 am
Space Weather Message Code: WARK06
- Serial Number: 616
- Issue Time: 2025 Oct 30 1013 UTC
- WARNING: Geomagnetic K-Index of 6 expected
- Valid From: 2025 Oct 30 1012 UTC
- Valid To: 2025 Oct 30 1500 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 30th, 2025 1:37:55 am
Space Weather Message Code: WARK04
- Serial Number: 5125
- Issue Time: 2025 Oct 30 0537 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5124
- Valid From: 2025 Oct 27 2325 UTC
- Now Valid Until: 2025 Oct 30 2100 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 30th, 2025 1:06:40 am
Space Weather Message Code: ALTTP2
- Serial Number: 1436
- Issue Time: 2025 Oct 30 0506 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2025 Oct 30 0428 UTC
- Estimated Velocity: 691 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 29th, 2025 11:02:49 pm
Space Weather Message Code: ALTK05
- Serial Number: 1886
- Issue Time: 2025 Oct 30 0302 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Oct 30 0259 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 29th, 2025 7:44:47 pm
Space Weather Message Code: WARK05
- Serial Number: 2123
- Issue Time: 2025 Oct 29 2344 UTC
- WARNING: Geomagnetic K-index of 5 expected
- Valid From: 2025 Oct 29 2344 UTC
- Valid To: 2025 Oct 30 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: Oct 29th, 2025 12:06:56 pm
Space Weather Message Code: WARK04
- Serial Number: 5124
- Issue Time: 2025 Oct 29 1606 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5123
- Valid From: 2025 Oct 27 2325 UTC
- Now Valid Until: 2025 Oct 30 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 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 29th, 2025 7:12:12 am
Space Weather Message Code: WARK04
- Serial Number: 5123
- Issue Time: 2025 Oct 29 1112 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5122
- Valid From: 2025 Oct 27 2325 UTC
- Now Valid Until: 2025 Oct 29 2100 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 28th, 2025 8:40:07 pm
Space Weather Message Code: ALTTP2
- Serial Number: 1435
- Issue Time: 2025 Oct 29 0040 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2025 Oct 29 0010 UTC
- Estimated Velocity: 1279 km/s
- Comment: associated with farsided event
- 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 28th, 2025 2:42:45 pm
Space Weather Message Code: WARK04
- Serial Number: 5122
- Issue Time: 2025 Oct 28 1842 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5121
- Valid From: 2025 Oct 27 2325 UTC
- Now Valid Until: 2025 Oct 29 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: Oct 28th, 2025 11:01:26 am
Space Weather Message Code: ALTK04
- Serial Number: 2602
- Issue Time: 2025 Oct 28 1501 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2025 Oct 28 1451 UTC
- Synoptic Period: 1200-1500 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.
