The U.S. Fire Administration estimates that lightning causes 17,400 fires each year, with an average of 10 deaths, 75 injuries and $138 million in property damage. Two-thirds of these disasters occur between June and August (25 percent in July alone). Most lightning strikes occur outdoors, igniting brush, grass and other materials; 41 percent hit homes and interior structures, zapping roofs, sidewalls, chimneys, framing and electrical wires with up to 100 million volts of electricity.









