Sometimes auroras just happen. On March 28th in Norway, a spectacular band of Northern Lights arced across the sky unprovoked by any significant gust of solar wind. Fredrik Broms sends this picture from Kvaløya:

Aurora
© Fredrik BromsImage Taken: Mar. 29, 2011
Location: Kvaløya, Norway
"These very beautiful and gentle auroras painted the sky and snowy landscape in green," says Broms. "With the auroras forming a band from east to west and the Milky Way stretching over the sky in the same direction now during spring, I beheld a double band of celestial wonders. Later in the night, pulsating auroras appeared over most of the sky, most prominent right above my head."

Aurora_1
© Fredrik BromsImage Taken: Mar. 29, 2011
Location: Kvaløya, Norway
Aurora_2
© Fredrik BromsImage Taken: Mar. 29, 2011
Location: Kvaløya, Norway