Lightning
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If you can hear thunder, you are within striking distance of lightning. Look for shelter inside a home, large building, or a hard-topped vehicle right away. Do not go under tall tress for shelter. There is no place outside that is safe during a thunderstorm. Wait at least 30 minutes after the last thunder before leaving your shelter.
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Stay away from windows and doors.
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If you are in or on open water, go to land and seek shelter immediately.
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Fires started by lightning peak in the summer months and in the late afternoon and early evening.
- During 2002-2005, U.S. fire departments responded to an estimated annual average of 31,400 fires started by lightning. These fires caused annual averages of 12 civilian deaths, 57 civilian injuries, and $213 million in direct property damage.
- Outside and other fires accounted for 78% of the lightning fires reported to local fire departments.
- In 2002-2005, only 16% of reported lightning fires occurred in homes but these accounted for nearly all the associated civilian deaths, 90% of the associated injuries, and 58% of the direct property damage.
Source: NFPA's "Lightning Fires and Lightning Strikes" report by Marty Ahrens, January 2008
Also see: Fact sheet on lightning. (PDF, 60 KB)
NFPA does not test, label or approve any products.
Updated: 11/08