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Heavy Rain and Flash Flooding Concerns in California; Heavy Snow in the Sierra

An atmospheric river will bring heavy rainfall to lower elevations of California this week, and heavy snow to the Sierra Nevada mountains. Flash flooding, some of which may be locally considerable, will be a concern on the western foothills of the Sierra Nevada mountains through Tuesday. Landslides, rockfalls and mudslides are possible in the Southern California mountains. Read More >

Overview

More severe thunderstorms moved through northeastern Wyoming and western South Dakota during the afternoon and evening of July 5, 2019. Flash flooding once again impacted the City of Sturgis along Bear Butte Creek, with additional flooding along Elk Creek in southern Meade County, northeast of Rapid City. Golf ball sized hail was reported around Spearfish, with hail to the size of a half dollar around Weston and Aladdin in Wyoming and Tilford and Zeona in South Dakota. Strong winds were reported north of Ellsworth Air Force Base and west of Faith in South Dakota and around Hulett in Wyoming.
 
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