National Weather Service United States Department of Commerce

Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Plains to the Upper Midwest

A significant and dangerous heat wave will expand from the Central U.S. into the Eastern U.S and linger through much of the work week. Numerous daily record highs and warm lows are likely. Severe thunderstorms are possible from the southern Plains through the Upper Mississippi Valley. Fire weather concerns are expected to persist across the Four Corners region. Read More >

The tornado which traveled through northern Wisconsin on May 16, 2017, is now the tornado with the longest track of continuous damage in Wisconsin since modern tornado records began in 1950. The tornado's path was 83 miles long. The hardest hit areas were just north of Chetek, Wisconsin, where EF-2 damage was found, and in the Conrath area where EF-3 damage occurred. EF-0 to EF-1 damage occurred along the remainder of the tornado's path. This is the first EF-3 tornado in the state since the Verona tornado in 2014. The EF-Scale is the Enhanced Fujita Scale of tornado damage where an EF-0 is the weakest tornado and an EF-5 is the strongest. See below for the latest information.