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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 >

Overview

A deep low pressure system tracked across the Northern Plains in the days following Thanksgiving, and produced widespread impacts as it went. Freezing drizzle began for some on Thanksgiving Thursday and Friday. Heavy, wet snow tracked from south to north across the area late Friday afternoon and persisted through the overnight and into Saturday. Meanwhile, wind gusts of 30-50 mph further reduced visibilities, greatly at times. Road conditions deteriorated quickly through the event, and despite many SDDOT "No Travel Advised" statements as well as the closure of I-90 from Chamberlain to the Wyoming border Friday night through Sunday morning, several accidents occurred. Additionally, a plane crashed in rural Brule County shortly after taking off from Chamberlain Saturday afternoon. 9 people were killed and 3 were seriously injured in the crash. By the time the storm let up Sunday morning, anywhere from 2-16 inches of snow and around 0.5-1.5" of liquid equivalent had fallen. Aberdeen's 16.6" storm total was the largest since February 20-21 of 2011 (17.7"), and 4.1" off the all-time 3-day record of 20.7" (Nov 23-25, 1993).  

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Surface weather map at 6 pm on Saturday, Nov 30th
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