Space Weather Message Code: SUMX01

Serial Number: 204

Issue Time: 2025 Dec 08 0513 UTC



SUMMARY: X-ray Event exceeded X1

Begin Time: 2025 Dec 08 0449 UTC

Maximum Time: 2025 Dec 08 0501 UTC

End Time: 2025 Dec 08 0504 UTC

X-ray Class: X1.1
Location: S18W55

NOAA 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.

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