Chicago Braces for Two Waves of Severe Storms and Tornado Threat

A tornado watch expands to the entire Chicago area as two waves of severe storms move in, bringing the risk of tornadoes, funnel clouds, hail and up to 70 mph winds. Multiple tornado and severe thunderstorm warnings are in effect across several counties, with flash flood and flood watches as rivers run high. The second line of storms is expected around 8 p.m. and could last several hours, tapering off by midnight, with the western suburbs facing the highest tornado risk; power outages are possible and ComEd is staging crews, advising people to avoid downed lines and report outages.