Rare 'Derecho' Storm Ravaged Washington Area

The system of thunderstorms that ravaged the Washington, D.C., area over the weekend, leaving 1.2 million homes without power and killing at least five people, was not only destructive — it was also rare. Known as a derecho, the string of storms combined intense lightning and rain with hurricane-force gusts as it swept from the Midwest into the mid-Atlantic Friday night. Meteorologists blamed the violent weather on the prolonged 100-plus temperatures that blanketed the eastern United States...Full Story
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