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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: Apr 14th, 2026 7:37:10 am
Space Weather Message Code: ALTEF3
- Serial Number: 3675
- Issue Time: 2026 Apr 14 1137 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3674
- Begin Time: 2026 Apr 03 0920 UTC
- Yesterday Maximum 2MeV Flux: 1650 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Apr 13th, 2026 7:01:31 am
Space Weather Message Code: ALTEF3
- Serial Number: 3674
- Issue Time: 2026 Apr 13 1101 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3673
- Begin Time: 2026 Apr 03 0920 UTC
- Yesterday Maximum 2MeV Flux: 1610 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Apr 12th, 2026 9:17:14 am
Space Weather Message Code: ALTEF3
- Serial Number: 3673
- Issue Time: 2026 Apr 12 1317 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3672
- Begin Time: 2026 Apr 03 0920 UTC
- Yesterday Maximum 2MeV Flux: 1082 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Apr 12th, 2026 5:45:25 am
Space Weather Message Code: WARK04
- Serial Number: 5317
- Issue Time: 2026 Apr 12 0945 UTC
- CANCEL WARNING: Geomagnetic K-index of 4 expected
- Cancel Serial Number: 5316
- Original Issue Time: 2026 Apr 10 0143 UTC
- Comment: Active conditions (Kp=4) are no longer expected to occur.
- 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: Apr 11th, 2026 1:56:04 pm
Space Weather Message Code: WARK04
- Serial Number: 5316
- Issue Time: 2026 Apr 11 1756 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5315
- Valid From: 2026 Apr 10 0145 UTC
- Now Valid Until: 2026 Apr 12 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: Apr 11th, 2026 9:06:43 am
Space Weather Message Code: ALTEF3
- Serial Number: 3672
- Issue Time: 2026 Apr 11 1306 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3671
- Begin Time: 2026 Apr 03 0920 UTC
- Yesterday Maximum 2MeV Flux: 1714 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Apr 10th, 2026 10:26:04 am
Space Weather Message Code: WARK05
- Serial Number: 2223
- Issue Time: 2026 Apr 10 1426 UTC
- WARNING: Geomagnetic K-index of 5 expected
- Valid From: 2026 Apr 10 1425 UTC
- Valid To: 2026 Apr 11 0900 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: Apr 10th, 2026 10:07:21 am
Space Weather Message Code: ALTEF3
- Serial Number: 3671
- Issue Time: 2026 Apr 10 1407 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3670
- Begin Time: 2026 Apr 03 0920 UTC
- Yesterday Maximum 2MeV Flux: 10680 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Apr 10th, 2026 9:50:17 am
Space Weather Message Code: WARK04
- Serial Number: 5315
- Issue Time: 2026 Apr 10 1350 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5314
- Valid From: 2026 Apr 10 0145 UTC
- Now Valid Until: 2026 Apr 11 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: Apr 9th, 2026 10:08:32 pm
Space Weather Message Code: ALTK04
- Serial Number: 2649
- Issue Time: 2026 Apr 10 0208 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2026 Apr 10 0205 UTC
- Synoptic Period: 0000-0300 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.
