A CME is heading straight for Earth

A CME is heading straight for Earth
Big old sunspot 4100 finally exploded--and it was a doozy. On May 31st at 00:05 UTC, Earth-orbiting satellites detected an M8.2-class solar flare.
Type II radio emissions from shock waves within this CME suggest it is traveling 1,938 km/s--which is to say, very fast. When it strikes Earth, the CME could spark strong geomagnetic storms with mid-latitude auroras. Stay tuned for updates about this potentially significant Earth-directed event.