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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 19th, 2026 1:45:36 am
Space Weather Message Code: ALTK05
- Serial Number: 2047
- Issue Time: 2026 Aug 19 0545 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2026 Aug 19 0545 UTC
- Synoptic Period: 0300-0600
- 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.
Geophysical Alert Message Issued: Aug 18th, 2026 4:52:01 pm
Space Weather Message Code: WARK04
- Serial Number: 5405
- Issue Time: 2026 Aug 18 2052 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5404
- Valid From: 2026 Aug 17 2101 UTC
- Now Valid Until: 2026 Aug 19 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: Aug 18th, 2026 4:43:17 pm
Space Weather Message Code: WARK05
- Serial Number: 2260
- Issue Time: 2026 Aug 18 2043 UTC
- WARNING: Geomagnetic K-index of 5 expected
- Valid From: 2026 Aug 18 2042 UTC
- Valid To: 2026 Aug 19 1200 UTC
- Warning Conditions: Onset
- 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.
Geophysical Alert Message Issued: Aug 18th, 2026 4:45:07 pm
Space Weather Message Code: ALTK05
- Serial Number: 2046
- Issue Time: 2026 Aug 18 2045 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2026 Aug 18 2045 UTC
- Synoptic Period: 1800-2100
- 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.
Geophysical Alert Message Issued: Aug 18th, 2026 10:31:43 am
Space Weather Message Code: WARK04
- Serial Number: 5404
- Issue Time: 2026 Aug 18 1431 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5403
- Valid From: 2026 Aug 17 2101 UTC
- Now Valid Until: 2026 Aug 18 2359 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 18th, 2026 1:06:25 am
Space Weather Message Code: ALTK05
- Serial Number: 2045
- Issue Time: 2026 Aug 18 0506 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2026 Aug 18 0505 UTC
- Synoptic Period: 0300-0600
- 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.
Geophysical Alert Message Issued: Aug 17th, 2026 10:27:00 pm
Space Weather Message Code: WARK05
- Serial Number: 2259
- Issue Time: 2026 Aug 18 0227 UTC
- WARNING: Geomagnetic K-index of 5 expected
- Valid From: 2026 Aug 18 0224 UTC
- Valid To: 2026 Aug 18 1200 UTC
- Warning Conditions: Onset
- 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.
Geophysical Alert Message Issued: Aug 17th, 2026 10:27:43 pm
Space Weather Message Code: WARK04
- Serial Number: 5403
- Issue Time: 2026 Aug 18 0227 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5402
- Valid From: 2026 Aug 17 2101 UTC
- Now Valid Until: 2026 Aug 18 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 17th, 2026 6:46:24 pm
Space Weather Message Code: WATA20
- Serial Number: 1121
- Issue Time: 2026 Aug 17 2246 UTC
- WATCH: Geomagnetic Storm Category G1 Predicted
- Highest Storm Level Predicted by Day:
- Aug 18: None (Below G1) Aug 19: G1 (Minor) Aug 20: None (Below G1)
- THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
- Comment:
- 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 17th, 2026 5:05:28 pm
Space Weather Message Code: ALTK04
- Serial Number: 2680
- Issue Time: 2026 Aug 17 2105 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2026 Aug 17 2059 UTC
- Synoptic Period: 1800-2100
- Active Warning: YES
- Comment:
- 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.
