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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: May 20th, 2025 9:40:59 pm
Space Weather Message Code: ALTK04
- Serial Number: 2561
- Issue Time: 2025 May 21 0140 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2025 May 21 0140 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.
Geophysical Alert Message Issued: May 20th, 2025 9:38:54 pm
Space Weather Message Code: WARK04
- Serial Number: 4972
- Issue Time: 2025 May 21 0138 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2025 May 21 0138 UTC
- Valid To: 2025 May 21 1200 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: May 20th, 2025 6:55:09 pm
Space Weather Message Code: SUM10R
- Serial Number: 866
- Issue Time: 2025 May 20 2255 UTC
- SUMMARY: 10cm Radio Burst
- Begin Time: 2025 May 20 2239 UTC
- Maximum Time: 2025 May 20 2239 UTC
- End Time: 2025 May 20 2243 UTC
- Duration: 4 minutes
- Peak Flux: 190 sfu
- Latest Penticton Noon Flux: 119 sfu
- Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
Geophysical Alert Message Issued: May 20th, 2025 10:27:41 am
Space Weather Message Code: ALTEF3
- Serial Number: 3467
- Issue Time: 2025 May 20 1427 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3466
- Begin Time: 2025 May 18 1705 UTC
- Yesterday Maximum 2MeV Flux: 1870 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: May 20th, 2025 3:11:49 am
Space Weather Message Code: WARK04
- Serial Number: 4971
- Issue Time: 2025 May 20 0711 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2025 May 20 0711 UTC
- Valid To: 2025 May 20 1500 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: May 19th, 2025 2:01:58 pm
Space Weather Message Code: ALTEF3
- Serial Number: 3466
- Issue Time: 2025 May 19 1801 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3465
- Begin Time: 2025 May 18 1705 UTC
- Yesterday Maximum 2MeV Flux: 1870 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: May 19th, 2025 6:13:30 am
Space Weather Message Code: ALTEF3
- Serial Number: 3465
- Issue Time: 2025 May 19 1013 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3464
- Begin Time: 2025 May 18 1705 UTC
- Yesterday Maximum 2MeV Flux: 1155 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: May 18th, 2025 7:54:10 pm
Space Weather Message Code: WARK04
- Serial Number: 4970
- Issue Time: 2025 May 18 2354 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 4969
- Valid From: 2025 May 16 2255 UTC
- Now Valid Until: 2025 May 19 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: May 18th, 2025 1:21:23 pm
Space Weather Message Code: ALTEF3
- Serial Number: 3464
- Issue Time: 2025 May 18 1721 UTC
- ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Threshold Reached: 2025 May 18 1705 UTC
- Station: GOES19
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: May 18th, 2025 10:55:01 am
Space Weather Message Code: WARK04
- Serial Number: 4969
- Issue Time: 2025 May 18 1455 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 4968
- Valid From: 2025 May 16 2255 UTC
- Now Valid Until: 2025 May 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.
