I remember when we studied coronal mass ejection in class everybody snickered.
I don't think it's gonna do anything major, I remember in the old topic someone said that the worst solar flare in history was like 80 years ago and blew out some power lines. We've had alot of technichal advancements since then. Lemme see if I can dig that up.
Also it's a glancing blow, which should drastically lessen the effects.