The main severe threat will be damaging wind gusts from strongest storms.
The warning is is in effect in Chicago and the surrounding area until 3:15 p.m. Wednesday.
Scattered storms are possible this afternoon, ranging from strong to severe.
A severe thunderstorm watch means conditions are favorable for severe thunderstorms in and close to the watch area.
The National Weather Service declared a severe thunderstorm watch for Boone and 50 other counties across Missouri on Wednesday afternoon.
The threats we are more concerned with being an issue for our area are damaging winds in excess of 60 miles per hour, hail up to a quarter in size, and heavy rain. Locations impacted include. Butler.
More storms will also be possible on Friday and into the weekend, with higher storm chances on Sunday, according to the weather service. Wind will damage siding, roofs and trees.
So a severe thunderstorm watch may be issued for part of southwest and south-central Lower Michigan.
Temperatures are forecast to reach into the upper-80s and low-90s with heat index readings of up to 100 degrees.