Rare Southern U.S. Winter Storm; Dangerous Cold Weather For Much of the Eastern U.S.; Critical Fire Weather for Southern California

A rare winter storm impacting the Southern U.S. will move offshore Wednesday morning. Behind the storm, arctic air will continue encompassing the eastern two-thirds of the Nation with only a slow return to normal temperatures expected by the end of the week. Moderate to strong Santa Ana winds and low humidity will maintain Critical fire weather conditions in southern California into Thursday. 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.

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Rare Southern U.S. Winter Storm; Dangerous Cold Weather For Much of the Eastern U.S.; Critical Fire Weather for Southern California

May 9-11, 2015 Storm System: Rain, Snow and Hail