During the day, because of the tropical air mass in place, showers and thunderstorms can form at just about any time. Fox 32 Meteorologist Mike Caplan has the forecast. A Flood Watch is in effect through the evening for most of the viewing area.

A line of fast-moving storms prompted severe thunderstorm warnings in the Chicago area and ground stops at O'Hare and Midway airports. There were also reports of storm damage.

Chicagoans are stepping up to help one another during another heat wave in the city. The temperature reached 94 degrees Wednesday, with a heat index of 105, according to the National Weather Service. An extreme heat warning is in effect through much of Thursday, when temperatures are forecast at a high of 94 and a heat index of 103.

After a spell of rain and cooler weather, high temperatures will roll across Chicago and the suburbs later this week. Dangerously high heat and humidity are forecast for Wednesday and Thursday, with the National Weather Service issuing a extreme heat watch early Monday.

Chicago faces a Heat Advisory with temperatures reaching 95°F and a heat index of 100-110°F until 10 p.m. Thursday.

The heat index is expected to hit 105 to 115 degrees in the metro area on Wednesday. The setting sun won't provide much relief — temperatures will likely remain above 90 degrees into the evening hours.

Chicago's in for a scorcher. An Extreme Heat Watch is in effect Wednesday through Thursday. Here's how to stay safe.

The Chicago area has felt less of an impact from the Trump administration’s National Weather Service cuts than offices in the Quad Cities and downstate Lincoln.