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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 12th, 2026 1:32:05 am
Space Weather Message Code: ALTEF3
- Serial Number: 3715
- Issue Time: 2026 Jul 12 0532 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3714
- Begin Time: 2026 Jul 10 1126 UTC
- Yesterday Maximum 2MeV Flux: 4620 pfu
- Yesterday's max: 4,620 pfu
- Yesterday's max: 4,620 pfu
Geophysical Alert Message Issued: Jul 11th, 2026 10:11:33 pm
Space Weather Message Code: ALTTP2
- Serial Number: 1515
- Issue Time: 2026 Jul 12 0211 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2026 Jul 12 0135 UTC
- Estimate Velocity: 678 km/s
- Comment:
Geophysical Alert Message Issued: Jul 11th, 2026 10:12:08 pm
Space Weather Message Code: ALTTP4
- Serial Number: 714
- Issue Time: 2026 Jul 12 0212 UTC
- ALERT: Type IV Radio Emission
- Begin Time: 2026 Jul 12 0053 UTC
- Comment:
Geophysical Alert Message Issued: Jul 11th, 2026 11:46:36 pm
Space Weather Message Code: ALTK04
- Serial Number: 2673
- Issue Time: 2026 Jul 12 0346 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2026 Jul 12 0259 UTC
- Synoptic Period: 0000-0300
- 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: Jul 11th, 2026 9:34:28 pm
Space Weather Message Code: WARK04
- Serial Number: 5383
- Issue Time: 2026 Jul 12 0134 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2026 Jul 12 0135 UTC
- Valid To: 2026 Jul 12 2359 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: Jul 11th, 2026 1:01:51 am
Space Weather Message Code: ALTEF3
- Serial Number: 3714
- Issue Time: 2026 Jul 11 0501 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3713
- Begin Time: 2026 Jul 10 1126 UTC
- Yesterday Maximum 2MeV Flux: 2029 pfu
- Yesterday's max: 2,030 pfu
- Yesterday's max: 2,030 pfu
Geophysical Alert Message Issued: Jul 10th, 2026 3:46:30 pm
Space Weather Message Code: WATA20
- Serial Number: 1115
- Issue Time: 2026 Jul 10 1946 UTC
- WATCH: Geomagnetic Storm Category G1 Predicted
- Highest Storm Level Predicted by Day:
- Jul 11: None (Below G1) Jul 12: G1 (Minor) Jul 13: 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: Jul 10th, 2026 7:51:50 am
Space Weather Message Code: WARK04
- Serial Number: 5382
- Issue Time: 2026 Jul 10 1151 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5381
- Valid From: 2026 Jul 09 1119 UTC
- Now Valid Until: 2026 Jul 11 0300 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 10th, 2026 7:26:49 am
Space Weather Message Code: ALTEF3
- Serial Number: 3713
- Issue Time: 2026 Jul 10 1126 UTC
- ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Threshold Reached: 2026 Jul 10 1126 UTC
- Station: GOES-19
- Comment: Yesterday's max: 767 pfu
- Yesterday's max: 767 pfu
Geophysical Alert Message Issued: Jul 9th, 2026 7:20:12 am
Space Weather Message Code: ALTK04
- Serial Number: 2672
- Issue Time: 2026 Jul 09 1120 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2026 Jul 09 1120 UTC
- Synoptic Period: 0900-1200
- 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.


