Several Illinois counties are under a tornado watch as a storm moves northward through the state.

A tornado watch was issued Sunday afternoon until 7 p.m. for an area with over 10.5 million residents spanning 10 counties in northeastern Illinois ... expected to hit the Chicago metropolitan ...

Multiple counties are under a Tornado Watch until 4 p.m. Wednesday with more counties expected be go under watches later today.

The National Weather Service says strong to severe weather will impact the Chicago area from 1 p.m. to 7 p.m. on Wednesday, but the threat has diminished for some parts of northern Illinois. A flood advisory is in effect for the southern half of Cook County, and most of Will County and Lake County, Indiana, until 4:45 p.m.

The tornado watch is in effect till 7 p.m. for Chicago, the surrounding south and west suburbs and northwest Indiana. Nine total counties in Illinois are under the watch: Cook, DuPage, Grundy ...

Weather balloon releases — tracking temperature, pressure and wind speed — have been suspended or reduced in the Midwest and Great Plains.

Several states in the central U.S. were hit hard overnight by a deadly storm that reportedly caused flash flooding and even destructive tornadoes.

A massive storm hitting the central U.S. on Wednesday could spin up damaging tornadoes and dump heavy rain from northern Texas to the Great Lakes.