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Intensifying Storm Moving Across the Plains; Heavy Rain in Florida; River Flooding in the Southwest

An intensifying storm system will move into the Plains today, bringing strong winds, locally heavy rain, and scattered severe thunderstorms with a risk of damaging wind gusts and a few tornadoes. Heavy rainfall and isolated flash flooding will continue across eastern and southern Florida. Moderate to major river flooding will continue today across the Southwest and Four Corners Region. Read More >

Overview

During the evening of July 13, 2024, a cluster of supercells moving southeastward out of Montana merged into a line of significantly severe thunderstorms that brought destructive winds to much of western and central South Dakota. Widespread measured wind gusts of 80 mph or greater were recorded from near the Montana/South Dakota state line eastward to near the Missouri River, with the highest gusts of over 100 mph observed in Butte County.

The Storm Prediction Center classified this line of storms as a "derecho", a term reserved for especially widespread, long-lived, and significant wind storms.

Image
Wind damage from 7 miles west of Redig, SD
(courtesy Ashley Secrest)
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