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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: Jun 21st, 2026 3:51:33 pm
Space Weather Message Code: ALTTP2
- Serial Number: 1507
- Issue Time: 2026 Jun 21 1951 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2026 Jun 21 1932 UTC
- Estimate Velocity: 380 km/s
- Comment:
Geophysical Alert Message Issued: Jun 21st, 2026 3:48:42 pm
Space Weather Message Code: SUMXM5
- Serial Number: 319
- Issue Time: 2026 Jun 21 1948 UTC
- SUMMARY: X-ray Event exceeded M5
- Begin Time: 2026 Jun 21 1917 UTC
- Maximum Time: 2026 Jun 21 1929 UTC
- End Time: 2026 Jun 22 1935 UTC
- Xray Class: M6.8
- Optical Class: 2b
- Location: S07E55
- Noaa Scale: R2 - Moderate
- Comment:
- NOAA Scale: R2 - Moderate
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
- Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.
Geophysical Alert Message Issued: Jun 21st, 2026 3:30:32 pm
Space Weather Message Code: ALTXMF
- Serial Number: 532
- Issue Time: 2026 Jun 21 1930 UTC
- ALERT: X-Ray Flux exceeded M5
- Threshold Reached: 2026 Jun 21 1927 UTC
- Noaa Scale: R2 - Moderate
- Comment:
- NOAA Scale: R2 - Moderate
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
Geophysical Alert Message Issued: Jun 20th, 2026 12:06:10 am
Space Weather Message Code: ALTTP2
- Serial Number: 1505
- Issue Time: 2026 Jun 20 0406 UTC
- CANCEL ALERT: Type II Radio Emission
- Cancel Serial Number: 1504
- Original Issue Time: 2026 Jun 20 0403 UTC
- Cancelling duplicate Type-II Alert
- Cancelling duplicate Type-II Alert
Geophysical Alert Message Issued: Jun 20th, 2026 12:07:09 am
Space Weather Message Code: ALTTP2
- Serial Number: 1506
- Issue Time: 2026 Jun 20 0407 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2026 Jun 20 0407 UTC
- Estimate Velocity: 300 km/s
- Comment:
Geophysical Alert Message Issued: Jun 20th, 2026 12:03:56 am
Space Weather Message Code: ALTTP2
- Serial Number: 1504
- Issue Time: 2026 Jun 20 0403 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2026 Jun 20 0300 UTC
- Estimate Velocity: 300 km/s
- Comment:
Geophysical Alert Message Issued: Jun 18th, 2026 11:07:21 am
Space Weather Message Code: ALTEF3
- Serial Number: 3703
- Issue Time: 2026 Jun 18 1507 UTC
- ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Threshold Reached: 2026 Jun 18 1507 UTC
- Station: GOES-19
- Comment:
Geophysical Alert Message Issued: Jun 16th, 2026 7:24:14 am
Space Weather Message Code: ALTEF3
- Serial Number: 3702
- Issue Time: 2026 Jun 16 1124 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3701
- Begin Time: 2026 Jun 13 1332 UTC
- Yesterday Maximum 2MeV Flux: 1489 pfu
Geophysical Alert Message Issued: Jun 15th, 2026 8:35:56 am
Space Weather Message Code: ALTEF3
- Serial Number: 3701
- Issue Time: 2026 Jun 15 1235 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3700
- Begin Time: 2026 Jun 13 1332 UTC
- Yesterday Maximum 2MeV Flux: 1581 pfu
Geophysical Alert Message Issued: Jun 14th, 2026 9:28:09 am
Space Weather Message Code: ALTEF3
- Serial Number: 3700
- Issue Time: 2026 Jun 14 1328 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3699
- Begin Time: 2026 Jun 13 1332 UTC
- Yesterday Maximum 2MeV Flux: 1520 pfu


