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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: Jun 3rd, 2026 7:59:48 am
Space Weather Message Code: SUMX01
- Serial Number: 218
- Issue Time: 2026 Jun 03 1159 UTC
- SUMMARY: X-ray Event exceeded X1
- Begin Time: 2026 Jun 03 1119 UTC
- Maximum Time: 2026 Jun 03 1128 UTC
- End Time: 2026 Jun 03 1135 UTC
- Xray Class: X1.0
- Optical Class:
- Location: N17W19
- Noaa Scale: R3 - Strong
- Comment: GOES-18 outage so using GOES-19
- GOES-18 outage so using GOES-19NOAA Scale: R3 - Strong
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
- Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
Geophysical Alert Message Issued: Jun 3rd, 2026 7:47:26 am
Space Weather Message Code: SUM10R
- Serial Number: 917
- Issue Time: 2026 Jun 03 1147 UTC
- SUMMARY: 10cm Radio Burst
- Begin Time: 2026 Jun 03 1121 UTC
- Maximum Time: 2026 Jun 03 1122 UTC
- End Time: 2026 Jun 04 1123 UTC
- Peak Flux: 250 sfu
- Duration: 2 minutes
- Latest Penticton Noon Flux: 146 sfu
- Comment:
Geophysical Alert Message Issued: Jun 3rd, 2026 7:41:23 am
Space Weather Message Code: ALTXMF
- Serial Number: 531
- Issue Time: 2026 Jun 03 1141 UTC
- ALERT: X-Ray Flux exceeded M5
- Threshold Reached: 2026 Jun 03 1141 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 3rd, 2026 3:29:03 am
Space Weather Message Code: ALTTP2
- Serial Number: 1497
- Issue Time: 2026 Jun 03 0729 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2026 Jun 03 0657 UTC
- Estimate Velocity: 313 km/s
- Comment:
Geophysical Alert Message Issued: Jun 3rd, 2026 3:15:26 am
Space Weather Message Code: SUMXM5
- Serial Number: 318
- Issue Time: 2026 Jun 03 0715 UTC
- SUMMARY: X-ray Event exceeded M5
- Begin Time: 2026 Jun 03 0648 UTC
- Maximum Time: 2026 Jun 03 0700 UTC
- End Time: 2026 Jun 03 0707 UTC
- Xray Class: M7.7
- Optical Class: 2B
- Location: N08W14
- 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 3rd, 2026 3:17:27 am
Space Weather Message Code: SUM10R
- Serial Number: 916
- Issue Time: 2026 Jun 03 0717 UTC
- SUMMARY: 10cm Radio Burst
- Begin Time: 2026 Jun 03 0657 UTC
- Maximum Time: 2026 Jun 03 0657 UTC
- End Time: 2026 Jun 03 0700 UTC
- Peak Flux: 540 sfu
- Duration: 3 minutes
- Latest Penticton Noon Flux: 146 sfu
- Comment: Castelli-U signature. Corrected duration.
- Castelli-U signature. Corrected duration.
Geophysical Alert Message Issued: Jun 3rd, 2026 3:10:30 am
Space Weather Message Code: SUM10R
- Serial Number: 916
- Issue Time: 2026 Jun 03 0710 UTC
- SUMMARY: 10cm Radio Burst
- Begin Time: 2026 Jun 03 0657 UTC
- Maximum Time: 2026 Jun 03 0657 UTC
- End Time: 2026 Jun 03 0658 UTC
- Peak Flux: 540 sfu
- Duration: 1 minutes
- Latest Penticton Noon Flux: 146 sfu
- Comment: Castelli-U signature
- Castelli-U signature
Geophysical Alert Message Issued: Jun 3rd, 2026 3:00:49 am
Space Weather Message Code: ALTXMF
- Serial Number: 530
- Issue Time: 2026 Jun 03 0700 UTC
- ALERT: X-Ray Flux exceeded M5
- Threshold Reached: 2026 Jun 03 0700 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 2nd, 2026 9:42:23 pm
Space Weather Message Code: ALTTP2
- Serial Number: 1496
- Issue Time: 2026 Jun 03 0142 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2026 Jun 03 0057 UTC
- Estimate Velocity: 253 km/s
- Comment:
Geophysical Alert Message Issued: Jun 2nd, 2026 9:43:20 pm
Space Weather Message Code: ALTTP4
- Serial Number: 710
- Issue Time: 2026 Jun 03 0143 UTC
- ALERT: Type IV Radio Emission
- Begin Time: 2026 Jun 03 0122 UTC
- Comment:


