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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

A strong upper level ridge of high pressure developed across the Ohio and Tennessee Valley, producing a record breaking early season heat wave. Numerous record highs and warm lows were established across our forecast area, including the first triple digit temperatures experienced since 2016 in Cape Girardeau, MO and 2013 in Poplar Bluff, MO. Low temperatures in the 80s were observed in several locations, setting monthly and all-time records in some cases. Heat index values exceeded 105 degrees starting on June 12 and continued through June 16. The most oppressive day was June 13th, when dewpoints in the mid 70s to around 80 produced heat index values of 110 to nearly 120.

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