A violent weather system – threatening a severe event called a derecho – moved through the Midwest Wednesday dumping hail and rain. Some 12 million people in four states live in the area at high risk of the storms and a potential derecho, according to the National Weather Service.
Manuel Balce Ceneta/AP/File
A violent weather systempacking severe thunderstorms, damaging winds and possibly strongtornadoes hit parts of the upper Midwest on Wednesday and maysoon batter Chicago, the nation's third-largest city, theNational Weather Service said.
Some 12 million people in four states live in the area at high risk of severe storms that include baseball-size hail,possible strong tornadoes and heavy rainfall that could resultin flash flooding, the agency said.
No tornado warnings had been issued in the high risk area bymidafternoon on Wednesday, but the service predicted a"potentially very dangerous situation" into the evening througheastern Iowa, northern Illinois and Indiana and northwest Ohio.
Thunderstorms along a fast-moving squall line that couldproduce embedded tornadoes and damaging winds of up to 75 milesper hour are expected, according to the weather service.