Sky‑Spectacle Tonight: 15 U.S. States Could Witness a Rare Aurora Outburst—Everything You Must Know Before Sunset
A large negative-polarity coronal-hole high-speed stream (CH HSS) has been rotating into Earth’s line of sight since 23 June, prompting NOAA SWPC to issue a G2 geomagnetic-storm outlook for 25–26 June UTC. Solar wind gusts exceeding 600 km/s are expected,