GEOMAGNETIC STORM IN PROGRESS: A G1-class geomagnetic storm is underway on Jan 14th as Earth enters a stream of fast-moving solar wind. G1-class storms are relatively minor and have little effect on satellites or global power grids. However, they can confuse migratory animals that navigate using magnetism at high latitudes and, moreover, may spark bright auroras around the Arctic Circle. Visit Spaceweather.com for more information and updates.
Above: First contact with the solar wind stream produced this outburst of auroras over Tromsø, Norway, on Jan. 13th. Photo credit: Markus Varik. See more images of the ongoing storm in Spaceweather.com's aurora photo gallery.
