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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: Aug 30th, 2026 1:55:38 am
Space Weather Message Code: WARK04
- Serial Number: 5410
- Issue Time: 2026 Aug 30 0555 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5409
- Valid From: 2026 Aug 28 1409 UTC
- Now Valid Until: 2026 Aug 30 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: Aug 29th, 2026 7:42:21 am
Space Weather Message Code: WARK04
- Serial Number: 5409
- Issue Time: 2026 Aug 29 1142 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5408
- Valid From: 2026 Aug 28 1409 UTC
- Now Valid Until: 2026 Aug 30 0600 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: Aug 28th, 2026 7:50:18 pm
Space Weather Message Code: WARK04
- Serial Number: 5408
- Issue Time: 2026 Aug 28 2350 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5407
- Valid From: 2026 Aug 28 1409 UTC
- Now Valid Until: 2026 Aug 29 1200 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: Aug 28th, 2026 4:40:30 pm
Space Weather Message Code: WARK05
- Serial Number: 2261
- Issue Time: 2026 Aug 28 2040 UTC
- WARNING: Geomagnetic K-index of 5 expected
- Valid From: 2026 Aug 28 2039 UTC
- Valid To: 2026 Aug 29 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: Aug 28th, 2026 11:02:40 am
Space Weather Message Code: ALTK04
- Serial Number: 2681
- Issue Time: 2026 Aug 28 1502 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2026 Aug 28 1500 UTC
- Synoptic Period: 1500-1800
- 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: Aug 28th, 2026 10:11:14 am
Space Weather Message Code: WARK04
- Serial Number: 5407
- Issue Time: 2026 Aug 28 1411 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2026 Aug 28 1409 UTC
- Valid To: 2026 Aug 28 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: Aug 27th, 2026 5:34:30 am
Space Weather Message Code: ALTEF3
- Serial Number: 3730
- Issue Time: 2026 Aug 27 0934 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1,000pfu
- Continuation of Serial Number: 3729
- Begin Time: 2026 Aug 21 1105 UTC
- Yesterday Maximum 2MeV Flux: 1049 pfu
- Max time: 2026 Aug 27 0925 UTC
Geophysical Alert Message Issued: Aug 26th, 2026 12:36:10 pm
Space Weather Message Code: WATA30
- Serial Number: 280
- Issue Time: 2026 Aug 26 1636 UTC
- WATCH: Geomagnetic Storm Category G2 Predicted
- Highest Storm Level Predicted by Day:
- Aug 27: G1 (Minor) Aug 28: G2 (Moderate) Aug 29: G2 (Moderate)
- THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
- Comment: HSS on 27 + CMEs on 28-29.
- CORRECTED
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
- Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
- Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
- Radio - HF (high frequency) radio propagation can fade at higher latitudes.
- Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
Geophysical Alert Message Issued: Aug 26th, 2026 4:13:16 am
Space Weather Message Code: ALTEF3
- Serial Number: 3729
- Issue Time: 2026 Aug 26 0813 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1,000pfu
- Continuation of Serial Number: 3728
- Begin Time: 2026 Aug 21 1105 UTC
- Yesterday Maximum 2MeV Flux: 1039 pfu
- Max time: 2026 Aug 26 0805 UTC
Geophysical Alert Message Issued: Aug 26th, 2026 2:58:55 am
Space Weather Message Code: ALTTP2
- Serial Number: 1525
- Issue Time: 2026 Aug 26 0658 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2026 Aug 26 0635 UTC
- Estimate Velocity: 930 km/s
- Comment:
