National Weather Service United States Department of Commerce

Thunderstorms and Heavy Rains Across Portions of the Central and Eastern US; Heat Expands to Portions of the East

Widespread showers and thunderstorms, some severe, may produce heavy downpours and flash flooding across much of the eastern and central U.S. Dangerous heat will continue in the Pacific Northwest and expand across portions of the East. Deep tropical moisture and associated thunderstorms will bring heavy rainfall and localized flash flooding across portions of Florida into the central Gulf Coast. Read More >

Showers and thunderstorms developed Wednesday afternoon and evening as the remnants of Tropical Depression Alberto moved through a warm and very humid atmosphere.

In the satellite animation below, a thunderstorm develops at the beginning of the loop just northwest of Greensburg. Watch how the shadow of the storm, stretching off to the right, grows longer as the storm builds and the sun sets. By the end of the loop the shadow is about 80 miles long, stretching all the way from Marion County to Laurel County. The animation goes from 7:42pm to 8:32pm EDT.