National Geographic Travelのインスタグラム(natgeotravel) - 9月8日 05時43分

The remnants of Tropical Storm Erika sparked a wild lightning show last week in South Florida. During the peak of the storm I counted at least 25 cloud to ground lightning strikes within a 3 mile radius of my location. #Lightning is a massive electrostatic discharge between the electrically charged regions within clouds or between a cloud and the surface of a planet. The charged regions within the atmosphere temporarily equalize themselves through a lightning flash, commonly referred to as a strike if it hits an object on the ground. Photo by Mike Theiss @ExtremeNature

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