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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 20th, 2025 2:05:11 am
Space Weather Message Code: ALTEF3
- Serial Number: 3500
- Issue Time: 2025 Jul 20 0605 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3499
- Begin Time: 2025 Jul 14 1550 UTC
- Yesterday Maximum 2MeV Flux: 11583 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Jul 19th, 2025 1:00:37 am
Space Weather Message Code: ALTEF3
- Serial Number: 3499
- Issue Time: 2025 Jul 19 0500 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3498
- Begin Time: 2025 Jul 14 1550 UTC
- Yesterday Maximum 2MeV Flux: 10273 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Jul 18th, 2025 10:37:57 am
Space Weather Message Code: WARK04
- Serial Number: 5042
- Issue Time: 2025 Jul 18 1437 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5041
- Valid From: 2025 Jul 17 0840 UTC
- Now Valid Until: 2025 Jul 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: Jul 18th, 2025 1:00:47 am
Space Weather Message Code: ALTEF3
- Serial Number: 3498
- Issue Time: 2025 Jul 18 0500 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3497
- Begin Time: 2025 Jul 14 1550 UTC
- Yesterday Maximum 2MeV Flux: 6590 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Jul 17th, 2025 4:55:19 pm
Space Weather Message Code: WARK04
- Serial Number: 5041
- Issue Time: 2025 Jul 17 2055 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5040
- Valid From: 2025 Jul 17 0840 UTC
- Now Valid Until: 2025 Jul 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: Jul 17th, 2025 4:51:43 am
Space Weather Message Code: ALTK04
- Serial Number: 2579
- Issue Time: 2025 Jul 17 0851 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2025 Jul 17 0851 UTC
- Synoptic Period: 0600-0900 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.
Geophysical Alert Message Issued: Jul 17th, 2025 4:52:41 am
Space Weather Message Code: ALTEF3
- Serial Number: 3497
- Issue Time: 2025 Jul 17 0852 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3496
- Begin Time: 2025 Jul 14 1550 UTC
- Yesterday Maximum 2MeV Flux: 4840 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Jul 17th, 2025 4:41:06 am
Space Weather Message Code: WARK04
- Serial Number: 5040
- Issue Time: 2025 Jul 17 0841 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2025 Jul 17 0840 UTC
- Valid To: 2025 Jul 17 2100 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: Jul 16th, 2025 7:34:28 pm
Space Weather Message Code: ALTEF3
- Serial Number: 3496
- Issue Time: 2025 Jul 16 2334 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3495
- Begin Time: 2025 Jul 14 1550 UTC
- Yesterday Maximum 2MeV Flux: 1010 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Jul 16th, 2025 7:07:06 pm
Space Weather Message Code: ALTK05
- Serial Number: 1829
- Issue Time: 2025 Jul 16 2307 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Jul 16 2301 UTC
- Synoptic Period: 2100-2400 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.
