National Weather Service United States Department of Commerce

Cold Front Dropping South Across the Western U.S.; Watching Threat for Tornadoes and Flooding in the South

A cold front will push south across the Western U.S. into Tuesday with mountain snow and areas of gusty to high winds. An area of low pressure will form along this front on Tuesday and bring a potential for severe thunderstorms with tornadoes and excessive rainfall in the lower to mid Mississippi River Valley. To the north, heavy snow is possible in parts of the upper Midwest. Read More >

Overview

During the late afternoon of Thursday, July 7th, scattered storms developed across northern Illinois and slowly moved east-northeast.  As the storms grew, their slow movement helped to produce locally heavy rainfall.  The Doppler Radar estimated rainfall maps show the localized nature of the heavy rainfall.  In addition, there were a handful of funnel cloud reports from the storms due to large scale rotation in the atmosphere.  Concentrated storm rotation for tornadoes was not favored.
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