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Heat Wave Expands to the East Coast; Flash Flooding Likely in the Central Plains into the Midwest; Severe Thunderstorms in the Northeast

Dangerous, prolonged heat is ongoing in the Mid-South to Mid-Mississippi Valley and heat expands into the Northeast for a brief period today. Widely scattered instances of flash flooding due to heavy rains are forecast from northeast Kansas to much of Indiana. Scattered strong to severe thunderstorms are possible across parts of New England, northern Mid-Atlantic, and North Dakota. Read More >

Overview

June 27, 2017 - Thunderstorms developed across northeastern Wyoming in the afternoon and strengthened as they moved into South Dakota. The storms produced very strong winds, which caused damage across the area. The Rapid City Airport measured a gust of 75 mph while the Custer County airport recorded a gust of 69 mph, one of the strongest ever at that location. Some hail accompanied these storms, with quarter-sized the largest reported. Below are photos of tree damage, the radar loop, and the list of storm reports. 

Rapid Valley Rapid Valley South of Custer South of Custer
Rapid Valley Rapid Valley South of Custer South of Custer

 

Downed tree 1 E Downtown Rapid City Tree damage in Custer Tree damage in Custer Tree damage in west Rapid
1 E Downtown Rapid City Custer Custer West Rapid
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