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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

Intense severe thunderstorms produced large hail, severe winds, and two tornadoes across central Minnesota and west-central Wisconsin during the daytime hours on Friday. Discrete supercells began in west-central Minnesota and traveled eastward before eventually growing upscale into a bowing mesoscale convective system. A highly anomalous summertime environment containing both extreme thermodynamic instability and strong vertical wind shear allowed for explosive, long-lived thunderstorms. Baseball to three-inch size hail was reported across central and east-central Minnesota while wind gusts in excess of 80 mph were reported across west-central Wisconsin. Cushing, WI had a notable wind gust of 84 mph.

Hourly Storm Reports

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radarloop
Radar loop of Friday, July 19, 2019
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