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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: May 27th, 2026 10:45:02 am
Space Weather Message Code: SUMPX1
- Serial Number: 131
- Issue Time: 2026 May 27 1445 UTC
- CANCELLED SUMMARY: Proton Event 10MeV Integral Flux exceeded 10pfu
- Cancel Serial Number: 130
- Original Issued Time: 2026-05-27T02:28:00
- Cancelled 2026-05-27 14:44 by Forecaster User duplicate
- Cancelled 2026-05-27 14:44 by Forecaster User duplicateNOAA Scale: S1 - Minor
Geophysical Alert Message Issued: May 27th, 2026 1:47:17 am
Space Weather Message Code: WARK04
- Serial Number: 5348
- Issue Time: 2026 May 27 0547 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5347
- Valid From: 2026-05-26T21:37:00
- Now Valid Until: 2026-05-27 12:00
- Warning Condition: Persistence
- Extended 2026-05-27 05:47 by Forecaster User
- Extended 2026-05-27 05:47 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 26th, 2026 10:27:49 pm
Space Weather Message Code: SUMPX1
- Serial Number: 129
- Issue Time: 2026 May 27 0227 UTC
- SUMMARY: Proton Event 10MeV Integral Flux exceeded 10pfu
- Begin Time: 2026 May 26 0015 UTC
- Maximum Time: 2026 May 26 0110 UTC
- End Time: 2026 May 26 0425 UTC
- Maximum 10MeV Flux: 23 pfu
- Noaa Scale: S1 - Minor
- Comment:
- NOAA Scale: S1 - Minor
Geophysical Alert Message Issued: May 26th, 2026 10:28:51 pm
Space Weather Message Code: SUMPX1
- Serial Number: 130
- Issue Time: 2026 May 27 0228 UTC
- SUMMARY: Proton Event 10MeV Integral Flux exceeded 10pfu
- Begin Time: 2026 May 27 0015 UTC
- Maximum Time: 2026 May 26 0110 UTC
- End Time: 2026 May 26 0425 UTC
- Maximum 10MeV Flux: 23 pfu
- Noaa Scale: S1 - Minor
- Comment:
- NOAA Scale: S1 - Minor
Geophysical Alert Message Issued: May 26th, 2026 8:01:34 pm
Space Weather Message Code: ALTK04
- Serial Number: 2658
- Issue Time: 2026 May 27 0001 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2026 May 26 2359 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: May 26th, 2026 5:38:28 pm
Space Weather Message Code: WARK04
- Serial Number: 5347
- Issue Time: 2026 May 26 2138 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2026 May 26 2137 UTC
- Valid To: 2026 May 27 0600 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: May 26th, 2026 10:20:21 am
Space Weather Message Code: ALTTP2
- Serial Number: 1494
- Issue Time: 2026 May 26 1420 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2026 May 26 1420 UTC
- Estimate Velocity: 650 km/s
- Comment: SVI
- SVI
Geophysical Alert Message Issued: May 26th, 2026 10:22:06 am
Space Weather Message Code: ALTTP2
- Serial Number: 1494
- Issue Time: 2026 May 26 1422 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2026 May 26 1244 UTC
- Estimate Velocity: 650 km/s
- Comment: SVI; updated with correct start time
- SVI; updated with correct start time
Geophysical Alert Message Issued: May 26th, 2026 10:19:17 am
Space Weather Message Code: ALTTP2
- Serial Number: 1491
- Issue Time: 2026 May 26 1419 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2026 May 26 1244 UTC
- Estimate Velocity: 650 km/s
- Comment: SVI
- SVI
Geophysical Alert Message Issued: May 26th, 2026 10:19:46 am
Space Weather Message Code: ALTTP2
- Serial Number: 1492
- Issue Time: 2026 May 26 1419 UTC
- CANCELLED ALERT: Type II Radio Emission
- Cancel Serial Number: 1491
- Original Issued Time: 2026-05-26T14:19:00
- Cancelled 2026-05-26 14:19 by Forecaster User Duplicate.
- Cancelled 2026-05-26 14:19 by Forecaster User Duplicate.


