Space Weather Message Code: ALTXMF

Serial Number: 333

Issue Time: 2023 Dec 15 0714 UTC



ALERT: X-Ray Flux exceeded M5

Threshold Reached: 2023 Dec 15 0712 UTC

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.

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