GEOMAGNETIC STORM PREDICTED: NOAA forecasters have issued a watch for G2-class (moderately strong) geomagnetic storms on Sept. 11th when a fast-moving stream of solar wind is expected to hit Earth's magnetic field. During G2-class storms, auroras can appear in the United States from New York to Wisconsin to Washington state. Visit Spaceweather.com for more information and updates.
Above: The incoming stream of solar wind is flowing from a canyon-shaped hole in the sun's atmosphere, shown here in a false-color UV image from NASA's Solar Dynamics Observatory.
