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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: Jul 15th, 2026 4:53:19 am
Space Weather Message Code: WARK04
- Serial Number: 5387
- Issue Time: 2026 Jul 15 0853 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5386
- Valid From: 2026 Jul 15 0143 UTC
- Now Valid Until: 2026 Jul 15 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: Jul 15th, 2026 1:58:03 am
Space Weather Message Code: ALTK04
- Serial Number: 2675
- Issue Time: 2026 Jul 15 0558 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2026 Jul 15 0554 UTC
- Synoptic Period: 0300-0600
- 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.
Geophysical Alert Message Issued: Jul 15th, 2026 1:54:15 am
Space Weather Message Code: WARK04
- Serial Number: 5386
- Issue Time: 2026 Jul 15 0554 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5385
- Valid From: 2026 Jul 15 0143 UTC
- Now Valid Until: 2026 Jul 15 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: Jul 14th, 2026 9:44:29 pm
Space Weather Message Code: WARK04
- Serial Number: 5385
- Issue Time: 2026 Jul 15 0144 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2026 Jul 15 0143 UTC
- Valid To: 2026 Jul 15 0600 UTC
- Warning Conditions: Onset
- 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.
Geophysical Alert Message Issued: Jul 13th, 2026 8:08:27 pm
Space Weather Message Code: ALTK04
- Serial Number: 2674
- Issue Time: 2026 Jul 14 0008 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2026 Jul 13 2359 UTC
- Synoptic Period: 2100-2400
- 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.
Geophysical Alert Message Issued: Jul 13th, 2026 7:50:18 pm
Space Weather Message Code: WARK04
- Serial Number: 5384
- Issue Time: 2026 Jul 13 2350 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2026 Jul 13 2349 UTC
- Valid To: 2026 Jul 14 0900 UTC
- Warning Conditions: Onset
- 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.
Geophysical Alert Message Issued: Jul 13th, 2026 6:27:53 am
Space Weather Message Code: ALTEF3
- Serial Number: 3716
- Issue Time: 2026 Jul 13 1027 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3715
- Begin Time: 2026 Jul 10 1126 UTC
- Yesterday Maximum 2MeV Flux: 3729 pfu
- Yesterday's max: 3,730 pfu
- Yesterday's max: 3,730 pfu
Geophysical Alert Message Issued: Jul 12th, 2026 5:01:57 pm
Space Weather Message Code: WARK05
- Serial Number: 2250
- Issue Time: 2026 Jul 12 2101 UTC
- CANCEL WARNING: Geomagnetic K-index of 5 expected
- Cancel Serial Number: 2249
- Original Issue Time: 2026 Jul 12 1411 UTC
- Should have only been valid until 12/2100 UTC.
- Should have only been valid until 12/2100 UTC.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: Jul 12th, 2026 11:03:18 am
Space Weather Message Code: ALTK05
- Serial Number: 2039
- Issue Time: 2026 Jul 12 1503 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2026 Jul 12 1459 UTC
- Synoptic Period: 1200-1500
- 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: Jul 12th, 2026 10:11:40 am
Space Weather Message Code: WARK05
- Serial Number: 2249
- Issue Time: 2026 Jul 12 1411 UTC
- WARNING: Geomagnetic K-index of 5 expected
- Valid From: 2026 Jul 12 1410 UTC
- Valid To: 2026 Jul 13 2100 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.
