National Weather Service officials are expecting Wednesday waves of showers and thunderstorms to hit the Chicago area capable of producing damaging winds and large hail and possibly tornadoes.

A semi driver was killed in Valparaiso as strong winds moved through the area, knocking out power for thousands, officials said. The storms uprooted trees, downed power lines, and damaged several homes,

The Tornado Watch is in effect until 9 p.m. for dozens of Illinois counties such as Grundy, Kendall, Kankakee, La Salle and Will. Indiana counties that are under the watch include Newton, Benton, Warren and Tippecanoe, among others.

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

A tornado warning was issued in northwest Indiana and most Chicago-area counties saw severe thunderstorm warnings on an eventful Sunday afternoon.

Hail and massive wind gusts pelted the Chicago area as severe thunderstorms rumbled through Sunday afternoon. The system had prompted a tornado watch covering most of northeastern Illinois and northwest Indiana, but the National Weather Service canceled it by 3:15 p.m. with storms rolling out over Lake Michigan.

It turns out the aphorism isn’t that far-fetched: On Wednesday evening, parts of the Chicago metropolitan area faced tornado warnings, only to see plummeting temperatures just hours later and an ...

After a few days of warmer temperatures, the Chicago area may see some severe storms Sunday afternoon ahead of a significant cooldown.

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.

Chicagoans can expect to see more severe weather on Wednesday, with the weather for Monday into Tuesday night remaining calm.