National Weather Service United States Department of Commerce

Severe Thunderstorms in the East Sunday; Excessive Heat Lingers in the Southern U.S. and Returning to California

Scattered damaging winds from severe thunderstorms will be possible across parts of the Northeast and Mid-Atlantic States Sunday. Excessive heat will continue over the southern U.S. Sunday before another round of heat arrives Monday through the central and southern U.S. spreading into the East by Independence Day. California will see excessive heat starting Tuesday. Read More >

May 9-11, 2015 featured a powerful spring low pressure system the wreaked havoc across South Dakota. Western and central parts of the state experienced heavy snow, eastern parts severe hail, and most everyone received very heavy and beneficial rainfall that put a dent in the drought. A few records were even set on May 10th for daily rainfall: Watertown with 1.38" (1.27" in 1936), Mobridge with 2.48" (0.86" in 1956), and Pierre with 1.52" (0.92" in 2010). Pierre also tied a record for most snow on the 10th - a trace. The same area that experienced thunderstorms and hail on the 10th observed a period of snow the very next morning! Below are several images that depict more of the details.

An EF-2 tornado also hit Delmont, SD at 10:45 am on Mother's Day, May 10th. Find much more information from the NWS office in Sioux Falls here