The next three nights could yield some substantial aurora just fyi. There were some here last week for sure with multiple reports in Mass alone.
This Coronal Mass Ejection (CME) came off the sun yesterday and was aimed at Mercury...they say this is going to hit the Messenger probe/orbiter within the next day.
Awesome display of power. That is the actual shock wave as seen by SOHO as it comes out from behind the sun.