A geomagnetic storm is in progress following the impact of a CME around 1130 UT on Sept. 9th. This could be the first of several hits from a series of CMEs expected to reach Earth during the weekend. High-latitude sky watchers should be alert for auroras after nightfall.

"After the outbursts of sunspot 1283 hurled several CMEs toward Earth, we expected quite some auroras in the arctic part of Norway," Frank Olsen of Tromsø. "We were not disappointed." He snapped this picture just after local midnight on Sept. 10th:

Norway Auroras
© Frank OlsenImage taken: Sep. 9, 2011
Location: Tromsø, Norway
Norway Auroras_1
© Frank Olsen
Norway Auroras_2
© Frank Olsen

More Images:
From Laffen Jensen of Stjordal, Trondheim, Norway; from Peter Rosén of Central Stockholm, Sweden; from Thorbjorn Haagensen of Tisnes, Troms, Norway; from Chad Blakley of Abisko National Park, Sweden; from Fredrik Holm of Reykjavik, Iceland; from Hanneke Luijting of Tromsø, Norway; from Frank Martin Ingilæ of Tana, Finnmark, Norway