National Weather Service United States Department of Commerce

Heat Wave Continues; Areas of Severe Thunderstorms and Heavy Rain through the Weekend

The prolonged and intense heat wave continues today for portions of the Ohio Valley and Mid-Atlantic, with relief expected by this weekend. There will be daily chances for severe thunderstorms and heavy rainfall in the northern Plains and Upper Midwest today through Sunday. Read More >

Overview

Numerous thunderstorms developed in a very favorable environment during the early evening across northern South Dakota on Friday, July 21st. These storms moved southeastward over the course of the night, all the while producing torrential downpours with rainfall amounts over 2" in some cases, as well as severe weather in the form of damaging winds and large hail. Spink County was hit especially hard when a supercell produced up to 80 mph winds in and around Redfield and Tulare.
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