Since it arrived on Sept. 27th, the stream has sparked G1- and G2-class geomagnetic storms and bright auroras around the Arctic Circle.  NOAA forecasters say the storms could intensify on Sept. 28th as the stream reaches peak speeds in excess of 700 km/s. High-latitude sky watchers should remain alert for auroras.

Last night, when the lights started to dance over southern Iceland, “I grabbed my violin to fiddle for Lady Aurora,” reports Olivier Staiger from the Mid-Hvoll Cottages between Skogafoss and Vik:

“This was in the late evening… and still going on this Wednesday morning as I write,” he says.

Source: Space Weather