####018000819#### WOXX01 KWNP 222236 ALTXMF Space Weather Message Code: ALTXMF Serial Number: 345 Issue Time: 2024 Feb 22 2230 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2024 Feb 22 2225 UTC NOAA Scale: R2 - Moderate 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. # Issued by the US Dept. of Commerce, NOAA, Space Weather Prediction Center # Recent messages, data, and help at http://swpc.noaa.gov/alerts/ # Send questions to SWPC.Webmaster@noaa.gov