Here’s what you need to know about this uncommon form of extreme weather. A derecho is a long-lived line of storms that often ...

A heat advisory in the Chicago area is over, but a new threat of severe weather will arrive in advance of a dramatic drop in ...

The Chicago area is in what is called a "ring of fire" weather pattern for the start of the work week -- and it could mean ...

Scattered storms and cloud cover may hold today’s heat in check, with cooler, more comfortable weather expected later this week just in time for Lollapalooza.

The Chicago area is undergoing a second day of dangerous high temperatures Thursday, with heat index values over 100. Some severe storms are also rolling through the area. Much of the area remains ...

A heat advisory is in effect across the Chicago area today, with storm chances set to increase through the weekend.