GEOMAGNETIC STORM IN PROGRESS: A G1-class geomagnetic storm is underway on Feb. 19th 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 spark bright auroras around the Arctic Circle and confuse migratory animals that navigate using magnetism at high latitudes. Visit Spaceweather.com for more information and updates.
Above: This NOAA computer model shows more than 38 gigawatts of power surging through Earth's auroral oval at the onset of the storm on Feb. 19th. Ground-based images of the display may be found in Spaceweather.com's aurora photo gallery.
