CME IMPACT: An interplanetary shock wave

CME IMPACT: An interplanetary shock wave (probably the leading edge of a CME) hit Earth's magnetic field on Nov. 12th at approximately 2300 UT, filling skies over northern Scandinavia with bright auroras. Oskar Pettersson sends this picture from Luleå, Sweden:

"Half of the sky was green and I stayed out for 5 hours observing the dancing light befor heading home," says Pettersson.

More auroras are in the offing as Earth passes through the magnetized wake of the CME. Our planet's polar magnetic field is currently unsettled, and this could be a sign that a full-fledged storm is brewing at high-latitudes. Stay tuned for updates. Aurora alerts: text, voice.

[link to www.spaceweather.com]