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 ...

Storms are expected to develop to the west in Nebraska and Minnesota, moving through northwest and north central Iowa.

Find out what derechos are, how they form, where they occur in the US, their similarities to tornadoes, and vital safety tips to stay protected.

A line of fast-moving storms prompted severe thunderstorm warnings in the Chicago area and ground stops at O'Hare and Midway ...

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

Extreme heat blanketed the Chicago area with heat index readings up to 110 on Thursday. Severe storms almost moved through ...

The powerful storms also led to ground stops at O'Hare and Midway, and may have even played a role in a gas station explosion ...

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.