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Watch for Severe Weather in the Upper Midwest Tonight

21 Jul 2017, 5:28 pm

Severe thunderstorm alerts are in effect for parts of the Upper Midwest and Central United States this evening.  Two severe thunderstorm watch boxes have been issued from now until 11 p.m. – 12 a.m. Central Daylight Time.

A Severe Thunderstorm Watch is in effect for areas to the north until 11 p.m. CDT and areas further south until 12 a.m. CDT

A Severe Thunderstorm Watch means that severe weather conditions are possible during the next several hours. An easy way to remember watch versus warning is a ‘watch’ means we should be on alert and watch for the potential of severe weather. When a warning is issued, that means severe weather is close by or overhead and that’s the time to get to a safe place!

A wall cloud captured by Adam Peters via Twitter on Friday evening in Hills, Iowa

The most life-threatening impact this evening and early tonight will be damaging wind. There is a possibility a few storms could create more rotation and produce a funnel cloud and/or tornado.

The tornado potential this evening is highest in the brown and green colors.
The damaging wind potential is highest in red, yellow, then brown.
The hail potential is highest in red, then yellow, and finally brown.

Clusters of rain and thunderstorms will be moving to the east-southeast at a steady pace, between 30-50 miles per hour. Storms may come up quickly due to their pace so stay aware of your weather surroundings!

The rainfall forecast through this weekend which shows the heaviest accumulations in browns, reds, and yellows.
Flash flood concerns continue tonight where areas may see 1-3″ or more of rainfall from these storms

Be mindful while out and about for your Friday night tonight as some downpours may create flooding. Thunderstorms could produce 1-3 inches of rain in a short amount of time, leading to flash flooding. This complex of storms is on the move for tomorrow and Sunday and we’ll be sure to update you here on later tonight with our severe weekend forecast. Until then, if you can safely do so please share weather pictures and videos with us to help us tell the weather story the best we can!

For WeatherNation, Meteorologist Steve Glazier

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