According to prediction center, the the CME is also expected to trigger moderate geomagnetic storms on Sunday (March 17th). These are disturbances in Earth’s magnetic field, and they can affect power systems and spacecraft operations.

Lastly, check out this awesome animation from NASA’s Goddard Spaceflight Center, which will take you on a journey from the center of the sun to eruptions on the surface and all the way to Earth — click on it to launch it:

The animation is amazing. I'm frightened by these disturbances.

the geeky miscreant in me wants another Carrington event (thankfully VERY improbable), but the technology dependent in me would rather watch it from right angles  ;-)