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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

During the afternoon and evening of July 21, 2018, scattered thunderstorms produced large hail and damaging winds across portions of the Black Hills, northeastern Wyoming, and southwestern South Dakota. Additionally, near-record high atmospheric moisture content for the area, coupled with saturated soils from an anomalously wet spring and early summer, led to flash flooding across portions of the Black Hills and in Rapid City.

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