716
WOXX02 KWNP 181906
SUMX01

Space Weather Message Code: SUMX01
Serial Number: 205
Issue Time: 2026 Jan 18 1900 UTC

SUMMARY: X-ray Event exceeded X1
Begin Time: 2026 Jan 18 1727 UTC
Maximum Time: 2026 Jan 18 1809 UTC
End Time: 2026 Jan 18 1851 UTC
X-ray Class: X1.9
Optical Class: 3b
Location: S12E20
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