Severe weather Saturday evening; much colder mid-week
Mild moist air held over Illinois Saturday evening and tornado watches were in effect for much of northern and central Illinois, southern Wisconsin and extreme NW Indiana. By press time wind damage with gusts to 70 m.p.h. were reported in Kendall and DeKalb Counties in northeast Illinois. Two brief tornado touchdowns were sighted in SW Wisconsin. There were numerous hail and wind damage reports in Nebraska, Missouri and Iowa Saturday.
Seasonably mild readings will persist into Tuesday; however, by Tuesday night any "summery" feel to the air will most likely be history. Canadian high pressure reminiscent of January or February will force readings to plunge some 30 to 40° with Tuesday night's low temperature in the upper 30s expected to be Wednesday's high. Snow showers are in Chicago's forecast Wednesday night and Thursday with lake-effect snows possible in northern Indiana Thursday and Friday.