600 WOXX02 KWNP 012241 SUMX01 Space Weather Message Code: SUMX01 Serial Number: 173 Issue Time: 2024 Oct 01 2238 UTC SUMMARY: X-ray Event exceeded X1 Begin Time: 2024 Oct 01 2158 UTC Maximum Time: 2024 Oct 01 2220 UTC End Time: 2024 Oct 01 2229 UTC X-ray Class: X7.1 Optical Class: 2b Location: S15E19 NOAA Scale: R3 - Strong 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. # 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