CME on the way..Not a grid destroyer but very powerful....

http://spaceweathernews.com/

Duck yer heads.....

(June 22 0220UTC) ALERT Strong CME Impact Watch – NASA and NOAA both forecast the last, largest, and most earth-direct CME to arrive by the evening of June 22, 2015 at speeds approaching 850km/s and high density. Such an event can product a strong geomagnetic storm and perhaps even disrupt satellites, avionics, GPS, communications (basically all electronics, including the internet and your cell phone) in minor ways. This CME is almost certainly well-below grid-destroying strength.

http://sdo.gsfc.nasa.gov/assets/img/latest/mpeg/latest_1024_0193.mp4

Wish the sky were clear here... it might be a good show.