NOAA continues post-tornado investigations; latest stats, photos available online
NOAA remains actively involved with meteorological forensic investigations following last week’s outbreak of killer tornadoes. A wide variety of information is available below and online at National Weather Service field teams from 21 forecast offices spanning 14 states continue to survey tornado damage and assess EF (Enhanced Fujita Scale) ratings for the massive tornado outbreak that occurred April 25-28, 2011. The situation and resulting information is rapidly evolving, with forty-five new surveys completed in the last 24 hours alone. National Weather Service forecast offices issued life-saving tornado warnings with an average lead-time of 24 minutes. Warnings were in effect for more than 90 percent of the tornadoes.