Caused by huge solar flares caused by a mass corona ejection (sounds like a sexual health problem to me though).
Solar plasma aurora storm to hit Earth tomorrow today! ? The Register
I hope the skies clear soon so I can possibly see the nothern lights.
If you look you'll go blind and won't be able to see the Triffids.
Shame its such a miserable day here - would be great to see the aurora this far south. Saw them once when I lived in Cleethorpes - great sight!
Looks stunning:
http://www.telegraph.co.uk/telegraph...g_1690787a.jpg
If it looks that awesome in a photo... I can only imagine what it'd look like in real life, wow!