Local reports said the strike occurred at about 2:50 p.m. local time (1950 GMT). A 23-year-old woman on a camping trip was struck and killed instantly.
A CNN meteorologist said severe storms and heavy rains were forecast for Florida and much of the southeastern United States on Saturday.
The incident marks the second lightening fatality this year in the country, according to the National Oceanic and Atmospheric Administration.
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