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

The Chicago branch of the National Weather Service tweeted out: "The potential for severe weather returns as early as Tuesday night (threat level 1 and 2 of 5) as multiple waves of storms life across the area, mainly after midnight. Large hail, gusty winds and lightning are the main hazards of the storm."

The Storm Prediction Center has areas southeast of I-55 in an "Enhanced Risk," this is a level 3 of 5 on their severe risk scale. Locations near and along I-55 are in a "Slight Risk" (level 2 of 5), and then north and northwest portions of Chicagoland are in a "Marginal Risk" (level 1/5).

Severe weather including storms, flooding and possible tornadoes brought weather warnings and damage across parts of the South and Midwest Sunday.

A band of severe weather brought tornado warnings to the Chicago area and parts of northern Illinois on Wednesday, downing power lines and knocking power out to homes. Thursday morning's commute will be chilly,

A line of severe storms triggered tornado warnings for parts of the area late Wednesday, and brought dangerous wind, hail and blinding downpours to the entire Chicago area. The severe storms had ...

In all my years of forecasting, I’ve never seen so many tornado reports in Chicagoland as have been named by the National Weather Service (NWS) over the past few years.

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

Severe thunderstorms, including tornado warnings, affecting Chicago and surrounding areas caused flights to be held at O'Hare