Thursday, September 12, 2019

Severe Thunderstorm Watch Issued for the Entire Viewing Area Until 2am Friday

A Severe Thunderstorm Watch has been issued for all of southern Wisconsin and northern Illinois until 2am Friday morning. Severe thunderstorms have developed over northeast Iowa, but are currently moving into southwest Wisconsin.

A cold front stretches through central Iowa with a line of thunderstorms developing along and ahead of the front. As the cold front moves east
the line of storms will also move east. Storm coverage will increase from west to east between 9pm and 2am, rolling through Rockford around Midnight.

Greatest threats with these storms will be gusty winds and very heavy rainfall. Temperatures are fairly warm above the surface so this will likely limit our hail threat tonight. There is a low risk for tornadoes, but won't be our main concern for
tonight. The only active warning right now is for a Flash Flood Warning for far northwest Jo Daviess County until 1:15pm. A Flash Flood Watch remains in effect for Green, Rock and Walworth counties as well as for Stephenson and Jo Daviess counties until Friday morning.

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