National Weather Service
Hot and humid conditions in the Chicago area on Tuesday could spark a severe thunderstorm by the end of the day, before giving way to much milder conditions on Wednesday.
Residents in much of Chicagoland typically ride out a tornado warning for anywhere from 45 to 60 minutes, according to data from the National Weather Service.
As of late Tuesday morning, the official temperature in Chicago was only 64 degrees, which is the normal low for mid-July. The average temperature for July 15 is 74 in Chicago, and the normal high is 85, according to the National Weather Service.
Monday’s deluge resulted in isolated flooding, but four Chicago area rivers remain near their flood stage, according to the National Weather Service.
Tens of thousands of homes and businesses in the Chicago area were still without power Wednesday morning, more than a day after two severe storms pummeled the region.
Last night’s storms were the equivalent of a boxer throwing a stiff jab followed by a devastating hook.
The NWS confirms two brief EF-1 tornadoes occurred Monday evening, with one near the town of Earlville and the second in Plainfield.
A line of severe thunderstorms hit the Chicago area Monday, causing power outages, flight cancellations and delays and other problems. By late Monday, a second wave of storms was expected.
CBS 2 Meteorologist Ed Curran reports a tornado watch had been issued for several counties in northern Illinois early Tuesday, but it was later cancelled several hours earlier than scheduled as the system fell apart in Illinois, and the heaviest storms moved into Wisconsin.
Though some of the flooding from Monday’s thunderstorms has receded, the Des Plaines River was still overflowing its banks on Wednesday, and the North Branch of the Chicago River was near flood stage in some areas, with more rain on the way Wednesday evening.
Heavy rainfall from a series of thunderstorms that moved through the Chicago area on Monday and early Tuesday left several roads impassable, and many basements flooded, especially in the northern suburbs, where the rain was heaviest.
After the storms swept through the area, nearly 9,000 ComEd customers in the west, southwest and south suburbs were left without power, according to ComEd. The majority of outages were reported near Harvey in Blue Island, where more than 6,300 customers were without power Sunday night.
Researchers looked at 60 years worth of climatological data from the National Weather Service’s Storm Prediction Center, and found tornadoes touch down most often in “transition zones” – areas where a dramatic change in landscape takes place.
Monday night’s snowfall dropped 1.4 inches at O’Hare International Airport, pushing the seasonal total to 82 inches, just shy of the 2nd most seasonal snowfall for Chicago – when 82.3 inches fell in the winter of 1977-78.
Here is the latest guidance from the National Weather Service: It will snow tonight.
Snowfall beginning Monday afternoon could snarl the evening commute and drop up to an inch of snow, following a weekend of rollercoaster weather for Chicagoans.
Even from miles above the Earth’s surface, it was clear this winter was one of the most severe we’ve ever experienced, and not just for Chicago.
This winter officially became the 3rd snowiest on record for Chicago on Wednesday, when 3.6 inches fell at O’Hare International Airport, bringing the season’s total to 79.1 inches.
This winter moved up another notch on the list of snowiest winters in Chicago overnight, when more than 3 inches fell at O’Hare International Airport, making the total snowfall this winter the third most on record.
Lake Michigan set a new record for ice coverage over the weekend, when ice levels reached 93.29 percent.