National Weather Service United States Department of Commerce

Heavy Rainfall and Flooding Concerns in the Southwest; Coastal Low to Impact the East Coast

Deep tropical moisture will lead to widespread showers and thunderstorms capable of producing flash flooding through early next week over the Southwest and Four Corners. A coastal storm is expected to develop off the southeast U.S. coast tonight and is expected to strengthen and bring flooding, dangerous rip currents, gusty winds and heavy rain up much of the East Coast through early next week. Read More >

Overview

Beginning on the evening of the 26th of December, a strong low pressure system lifted up from southeast Colorado/southwest Kansas and into eastern Nebraska/western Iowa and finally into Wisconsin on Friday the 28th of December.  This generated two distinct rounds of snowfall and mixed precipitation.  The first occurred the evening of the 26th and dumped snow mostly on the western two thirds of the South Dakota, along with some freezing rain in the central part of the state.  The second affected primarily the eastern half of the state with areas along and east of the Coteau being the hardest hit.  Along with the second wave of snow, very strong winds created whiteout blizzard conditions for most of the northeast quadrant of South Dakota.  Widespread storm total snowfalls of 6-12" were recorded across much of the state. 

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Snowfall Reports Over the Duration of the Storm
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