This morning, the weather service issued a hazardous weather outlook for the Chicago area and parts of northern Illinois. The warning is for strong to severe thunderstorms to move through in the evening and overnight hours, with the potential for dangerous and deadly lightning, high winds, thunder, hail and the possibility of tornadoes.
According to media reports, the storms will hit the city in two waves. The first wave will spread across the area this morning. A cluster of strong storms was moving through Wisconsin and heading into northwestern Illinois. Those storms are expected to weaken from the severe levels they are at currently, but could still bring heavy rains.
The second wave is expected to come through late in the afternoon, evening and overnight hours. Those storms have a stronger likelihood of being severe. Winds in excess of 60 miles per hour, quarter size hail and intense cloud-to-ground lightning is possible. More importantly the National Weather Service is also saying that the possibility for isolated tornadoes exists.
The counties covered in the warning and outlook area include Winnebago, Boone, McHenry, Lake, Ogle, Lee, DeKalb, Kane, DuPage, Cook, LaSalle, Kendall, Grundy, Will, Kankakee, Livingston, Iroquois and Ford. The warning then also extends into northwestern Indiana including the counties of Lake, Porter, Newton, Jasper and Benton.
There is a warning that the storms could continue into Wednesday morning. Some of those storms have a slight risk of becoming severe, also. However, those storms are more likely to hit eastern Illinois and Indiana.
The entire Chicago area has experienced a very bad summer in terms of storms. Area power outages have occurred all summer. There has been wide spread area flooding. The area has also been hit by intense heat waves followed be intense storms.