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ALTPX1



Space Weather Message Code: ALTPX1

Serial Number: 339

Issue Time: 2023 Dec 16 0002 UTC



ALERT: Proton Event 10MeV Integral Flux exceeded 10pfu

Begin Time: 2023 Dec 15 2355 UTC

NOAA Scale: S1 - Minor

www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.



# Issued by the US Dept. of Commerce, NOAA, Space Weather Prediction Center

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