Chicago weather: Extreme heat warning and severe storms possible

Key Points:

• Severe thunderstorm and tornado warnings have been issued for multiple counties in Illinois and Indiana, including Will, Cook, Kane, DuPage, Lake, McHenry, Kenosha, and Racine, with tornado warnings active until at least 1:30 p.m.
• A tornado near Lake Geneva was reported moving south at 30 mph, accompanied by large hail up to ping-pong and baseball size, causing significant risks of injury and damage to property and vegetation.
• The National Weather Service warned of dangerous flying debris and urged people to take shelter immediately, while the FAA implemented ground stops at O'Hare and Midway airports due to the severe weather.
• A second round of storms is expected around 6 p.m., with a severe thunderstorm watch in effect for the Chicago area and northwest Indiana through 8 p.m., and potential for destructive winds over 70 mph, golf-ball-sized hail, and heavy rainfall.
• These severe weather threats coincide with ongoing heat advisories and extreme heat warnings across the Chicago area, adding to the hazardous conditions through Monday evening.