Forecasters at the NOAA Space Environment Center in Boulder, Colo., observed a geomagnetic storm on Sunday, May 15, which they classified as an extreme event, measuring G-5—the highest level—on the NOAA Space Weather Scales. (Click image for larger view of the sun from the SOHO spacecraft of the intense solar activity taken May 15, 2005, at 7:50 a.m. EDT. Click here to view high resolution version, which is a large file. Click here to view latest images. Please credit “SOHO.”)
