Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Great Lakes

Thunderstorms with strong wind gusts and hail will be possible today from Michigan into the Lower Great Lakes region. A significant and dangerous heat wave will expand from the Central U.S. into the Eastern U.S this weekend through much of next week. Numerous daily record highs and warm lows are likely. Read More >

- Map displaying storm reports. Click the image to view an interactive map of the reports.

- Visible Satellite loop during the afternoon hours of July 1, 2012

- Chronological sequence of radar images of a severe thunderstorm over northeastern Chesterfield County, SC around 2:30 pm. Note how the core of higher reflectivity values (60+ dbz are white) grows to over 40,000 ft by frame 4 and then descends to the surface in image 5.