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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 19th, 2026 12:56:04 am
Space Weather Message Code: ALTEF3
- Serial Number: 3689
- Issue Time: 2026 May 19 0456 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3688
- Begin Time: 2026-05-16 17:40
- Yesterday Maximum 2MeV Flux: 6118 pfu
- Continued 2026-05-19 05:00 by Forecaster User
- Continued 2026-05-19 05:00 by Forecaster User
Geophysical Alert Message Issued: May 18th, 2026 1:00:25 am
Space Weather Message Code: ALTEF3
- Serial Number: 3688
- Issue Time: 2026 May 18 0500 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3687
- Begin Time: 2026-05-16 17:40
- Yesterday Maximum 2MeV Flux: 6118 pfu
- Continued 2026-05-18 04:59 by Forecaster User
- Continued 2026-05-18 04:59 by Forecaster User
Geophysical Alert Message Issued: May 17th, 2026 5:16:07 pm
Space Weather Message Code: SUM10R
- Serial Number: 913
- Issue Time: 2026 May 17 2116 UTC
- SUMMARY: 10cm Radio Burst
- Begin Time: 2026 May 17 2050 UTC
- Maximum Time: 2026 May 17 2051 UTC
- End Time: 2026 May 17 2051 UTC
- Peak Flux: 370 sfu
- Duration: 1 minutes
- Latest Penticton Noon Flux: 104 sfu
- Comment:
Geophysical Alert Message Issued: May 17th, 2026 12:12:50 pm
Space Weather Message Code: WATA20
- Serial Number: 1113
- Issue Time: 2026 May 17 1612 UTC
- WATCH: Geomagnetic Storm Category G1 Predicted
- Highest Storm Level Predicted by Day:
- May 18: G1 (Minor) May 19: G1 (Minor) May 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: May 17th, 2026 4:40:01 am
Space Weather Message Code: WARK04
- Serial Number: 5342
- Issue Time: 2026 May 17 0840 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5341
- Valid From: 2026-05-13T20:26:00
- Now Valid Until: 2026-05-17 21:00
- Warning Condition: Persistence
- Extended 2026-05-17 08:38 by Forecaster User
- Extended 2026-05-17 08:38 by Forecaster User
- 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 17th, 2026 4:16:10 am
Space Weather Message Code: ALTEF3
- Serial Number: 3687
- Issue Time: 2026 May 17 0816 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3686
- Begin Time: 2026-05-16 17:40
- Yesterday Maximum 2MeV Flux: 1902 pfu
- Continued 2026-05-17 08:16 by Forecaster User
- Continued 2026-05-17 08:16 by Forecaster User
Geophysical Alert Message Issued: May 16th, 2026 5:34:00 pm
Space Weather Message Code: WATA20
- Serial Number: 1112
- Issue Time: 2026 May 16 2134 UTC
- WATCH: Geomagnetic Storm Category G1 Predicted
- Highest Storm Level Predicted by Day:
- May 17: G1 (Minor) May 18: G1 (Minor) May 19: 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: May 16th, 2026 2:13:39 pm
Space Weather Message Code: WARK04
- Serial Number: 5341
- Issue Time: 2026 May 16 1813 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5340
- Valid From: 2026-05-13T20:26:00
- Now Valid Until: 2026-05-17 09:00
- Warning Condition: Persistence
- Extended 2026-05-16 18:12 by WC
- Extended 2026-05-16 18:12 by WC
- 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 16th, 2026 2:14:04 pm
Space Weather Message Code: WARK05
- Serial Number: 2237
- Issue Time: 2026 May 16 1814 UTC
- EXTENDED WARNING: Geomagnetic K-index of 5 expected
- Extension to Serial Number: 2236
- Valid From: 2026-05-15T13:05:00
- Now Valid Until: 2026-05-17 09:00
- Warning Condition: Persistence
- Extended 2026-05-16 18:13 by WC
- Extended 2026-05-16 18:13 by WC 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: May 16th, 2026 2:04:18 pm
Space Weather Message Code: ALTK05
- Serial Number: 2022
- Issue Time: 2026 May 16 1804 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2026 May 16 1759 UTC
- Synoptic Period: 1500-1800
- 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.
