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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: Oct 31st, 2026 8:20:48 am
Space Weather Message Code: WARK04
- Serial Number: 5445
- Issue Time: 2026 Oct 31 1220 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2026 Oct 31 1235 UTC
- Valid To: 2026 Nov 01 1500 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: Oct 30th, 2026 7:11:02 pm
Space Weather Message Code: WARK05
- Serial Number: 2272
- Issue Time: 2026 Oct 30 2311 UTC
- WARNING: Geomagnetic K-index of 5 expected
- Valid From: 2026 Oct 30 2310 UTC
- Valid To: 2026 Oct 31 0600 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.
Geophysical Alert Message Issued: Oct 30th, 2026 6:40:49 pm
Space Weather Message Code: ALTK04
- Serial Number: 2695
- Issue Time: 2026 Oct 30 2240 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2026 Oct 30 2235 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: Oct 30th, 2026 6:24:12 pm
Space Weather Message Code: WARK04
- Serial Number: 5444
- Issue Time: 2026 Oct 30 2224 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2026 Oct 30 2223 UTC
- Valid To: 2026 Oct 31 1200 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: Oct 30th, 2026 10:59:54 am
Space Weather Message Code: ALTEF3
- Serial Number: 3762
- Issue Time: 2026 Oct 30 1459 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1,000pfu
- Continuation of Serial Number: 3761
- Begin Time: 2026 Oct 23 1140 UTC
- Yesterday Maximum 2MeV Flux: 1228 pfu
- Max time: 2026 Oct 29 1630 UTC
Geophysical Alert Message Issued: Oct 29th, 2026 3:10:52 pm
Space Weather Message Code: WATA20
- Serial Number: 1134
- Issue Time: 2026 Oct 29 1910 UTC
- WATCH: Geomagnetic Storm Category G1 Predicted
- Highest Storm Level Predicted by Day:
- Oct 30: None (Below G1) Oct 31: G1 (Minor) Nov 01: G1 (Minor)
- 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: Oct 29th, 2026 12:14:35 pm
Space Weather Message Code: ALTEF3
- Serial Number: 3761
- Issue Time: 2026 Oct 29 1614 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1,000pfu
- Continuation of Serial Number: 3760
- Begin Time: 2026 Oct 23 1140 UTC
- Yesterday Maximum 2MeV Flux: 2493 pfu
- Max time: 2026 Oct 28 1805 UTC
Geophysical Alert Message Issued: Oct 28th, 2026 12:38:01 pm
Space Weather Message Code: WATA20
- Serial Number: 1133
- Issue Time: 2026 Oct 28 1638 UTC
- WATCH: Geomagnetic Storm Category G1 Predicted
- Highest Storm Level Predicted by Day:
- Oct 29: None (Below G1) Oct 30: None (Below G1) Oct 31: G1 (Minor)
- THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
- Comment: G1 (Minor) geomagnetic storms are likely on 31 Oct primarily due to recurrent, positive polarity coronal hole high speed stream effects.
- 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: Oct 28th, 2026 5:23:11 am
Space Weather Message Code: ALTEF3
- Serial Number: 3760
- Issue Time: 2026 Oct 28 0923 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1,000pfu
- Continuation of Serial Number: 3759
- Begin Time: 2026 Oct 23 1140 UTC
- Yesterday Maximum 2MeV Flux: 1789 pfu
- Max time: 2026 Oct 27 1715 UTC
Geophysical Alert Message Issued: Oct 27th, 2026 7:38:11 am
Space Weather Message Code: ALTEF3
- Serial Number: 3759
- Issue Time: 2026 Oct 27 1138 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1,000pfu
- Continuation of Serial Number: 3758
- Begin Time: 2026 Oct 23 1140 UTC
- Yesterday Maximum 2MeV Flux: 3304 pfu
- Max time: 2026 Oct 26 1105 UTC
