Slight Risk for Excessive Rainfall and Severe Thunderstorms Thursday

Additional rounds of thunderstorms are expected Thursday and Thursday night across Oklahoma and north Texas, with risks for both large hail and flash flooding. Strong winds may accompany any storms from east Texas northeast through the lower Great Lakes. 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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Slight Risk for Excessive Rainfall and Severe Thunderstorms Thursday

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