Space Environment Alert
Issued by NWS
Issued by NWS
574 WOXX30 KWNP 171826 ALTEF3 Space Weather Message Code: ALTEF3 Serial Number: 3717 Issue Time: 2026 Jul 17 1822 UTC ALERT: Electron 2MeV Integral Flux exceeded 1,000pfu Threshold Reached: 2026 Jul 17 1750 UTC Station: GOES-18 Comment: Yesterdays max: 1382 pfu # 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