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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: Aug 4th, 2026 4:10:52 am
Space Weather Message Code: WARK04
- Serial Number: 5398
- Issue Time: 2026 Aug 04 0810 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5397
- Valid From: 2026 Aug 02 1237 UTC
- Now Valid Until: 2026 Aug 04 1500 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: Aug 3rd, 2026 7:55:50 pm
Space Weather Message Code: WARK04
- Serial Number: 5397
- Issue Time: 2026 Aug 03 2355 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5396
- Valid From: 2026 Aug 02 1237 UTC
- Now Valid Until: 2026 Aug 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: Aug 3rd, 2026 4:03:52 pm
Space Weather Message Code: WARK04
- Serial Number: 5396
- Issue Time: 2026 Aug 03 2003 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5395
- Valid From: 2026 Aug 02 1237 UTC
- Now Valid Until: 2026 Aug 04 0000 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: Aug 2nd, 2026 10:53:13 pm
Space Weather Message Code: WARK04
- Serial Number: 5395
- Issue Time: 2026 Aug 03 0253 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5394
- Valid From: 2026 Aug 02 1237 UTC
- Now Valid Until: 2026 Aug 03 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: Aug 2nd, 2026 10:53:49 pm
Space Weather Message Code: WARK05
- Serial Number: 2255
- Issue Time: 2026 Aug 03 0253 UTC
- EXTENDED WARNING: Geomagnetic K-index of 5 expected
- Extension to Serial Number: 2254
- Valid From: 2026 Aug 02 1427 UTC
- Now Valid Until: 2026 Aug 03 1500 UTC
- Warning Condition: Persistence
- 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: Aug 2nd, 2026 2:01:06 pm
Space Weather Message Code: ALTK06
- Serial Number: 724
- Issue Time: 2026 Aug 02 1800 UTC
- ALERT: Geomagnetic K-index of 6
- Threshold Reached: 2026 Aug 02 1759 UTC
- Synoptic Period: 1500-1800
- Active Warning: YES
- Noaa Scale: G2 - Moderate
- Comment:
- 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: Aug 2nd, 2026 1:47:41 pm
Space Weather Message Code: WARK05
- Serial Number: 2254
- Issue Time: 2026 Aug 02 1747 UTC
- EXTENDED WARNING: Geomagnetic K-index of 5 expected
- Extension to Serial Number: 2253
- Valid From: 2026 Aug 02 1427 UTC
- Now Valid Until: 2026 Aug 03 0300 UTC
- Warning Condition: Persistence
- This extends previous warning.
- 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: Aug 2nd, 2026 1:48:29 pm
Space Weather Message Code: WARK04
- Serial Number: 5394
- Issue Time: 2026 Aug 02 1748 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5393
- Valid From: 2026 Aug 02 1237 UTC
- Now Valid Until: 2026 Aug 03 1200 UTC
- Warning Condition: Persistence
- This extends the previous warning.
- 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: Aug 2nd, 2026 1:48:38 pm
Space Weather Message Code: WARK06
- Serial Number: 668
- Issue Time: 2026 Aug 02 1746 UTC
- WARNING: Geomagnetic K-index of 6 expected
- Valid From: 2026 Aug 02 1745 UTC
- Valid To: 2026 Aug 02 2359 UTC
- Warning Conditions: Onset
- Noaa Scale: G2 - Moderate
- Comment:
- 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: Aug 2nd, 2026 1:12:44 pm
Space Weather Message Code: ALTK05
- Serial Number: 2042
- Issue Time: 2026 Aug 02 1712 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2026 Aug 02 1712 UTC
- Synoptic Period: 1500-1800
- Active Warning: YES
- Noaa Scale: G1 - Minor
- Comment:
- 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.
