During the evening of September 18-19, a strong geomagnetic storm led to a greatly expanded auroral oval and observations of aurora from as far south as VIrginia. The activity was due to a Coronal Mass Ejection (CME) on the sun that occured days earlier. G3 and higher storms are relatively rare but are being seen more often as the current solar cycle intensifies.

Uploaded by Mike R on 09/21/2023, 16:46:58   Category: SuperDARN