Hacker News @h4ckernews@mastodon.social · activity timestamp 7 hours ago Level S4 solar radiation eventhttps://www.swpc.noaa.gov/news/g4-severe-geomagnetic-storm-levels-reached-19-jan-2026 #HackerNews #LevelS4 #SolarRadiation #Event #GeomagneticStorm #SpaceWeather #NOAA Read more Read less Translate G4 (Severe) Geomagnetic Storm Levels Reached 19 Jan, 2026 | NOAA / NWS Space Weather Prediction Center Reply Boost Quote You cannot quote this post Like More actions Copy link Flag this post Block
