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Heavy Rain From the Central Plains to the Mid-Atlantic; Heat Wave Begins This Weekend

Strong to severe thunderstorms and heavy rain will impact portions of the central Plains into the Upper Midwest and the Mid-Atlantic through the weekend. A stretch of unusually hot and humid weather is expected across portions of the central U.S. and the Southeast beginning this weekend and continuing through next week. The heat may reach dangerous levels, particularly mid to late next week. Read More >

Overview

The afternoon of July 5th, storms developed along a boundary between very dry air and very moist air. This setup supported isolated storms and strong straightline winds. The most impressive storm produced a microburst (a very narrow area of strong winds within a thunderstorm) right over Mina Lake, causing structural damage, uprooted trees, and flipped boats and pontoons. This same storm tracked southeast and eventually produced hail and strong winds in the Northville/Mellette area. Large hail was also reported between Bath and Groton.

A second area of storms further west produced large hail near Isabel and tracked southeast. Several strong wind reports from 58 to 65 mph were reported along the Missouri River Valley.

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SPC Storm Reports from July 5, 2017. Interactive map here: http://www.spc.noaa.gov/climo/gmf.php?rpt=170705_rpts_filtered
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