A fast moving low pressure system across the upper Midwest brought a rapid change in pressure, which induced high sustained winds.

High Wind in WINNEBAGO, ILLINOIS
From 19-FEB-16 11:16:00 to 19-FEB-16 11:16:00 (CST-6)
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

High Wind in GRUNDY, ILLINOIS
From 19-FEB-16 12:55:00 to 19-FEB-16 12:55:00 (CST-6)
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

A portion of a roof blew off a building at 534 Beford Rd in Morris, IL.

High Wind in KENDALL, ILLINOIS
From 19-FEB-16 15:30:00 to 19-FEB-16 15:30:00 (CST-6)
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Roof damage to Cross Lutheran Church.

High Wind in DU PAGE, ILLINOIS
From 19-FEB-16 12:17:00 to 19-FEB-16 15:30:00 (CST-6)
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Tree uprooted at Fox Valley Center Drive, off of E New York St and Route 59 at approximately 1217 pm.  Section of roof partially torn away on a building at College of DuPage at approximately 215 pm CST. Power pole snapped in half on Meyer Rd near Foster in Bensenville at approximately 330 pm CST.

High Wind in COOK, ILLINOIS
From 19-FEB-16 12:17:00 to 19-FEB-16 15:37:00 (CST-6)
Magnitude: 50.00 MG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: ASOS

Southwest winds gusted around 52 knots (60 mph) for around 3 and a half hours.  In Elk Grove Village, a  canopy was blown off a gas station on Higgins Rd between Elmhurst Rd and Touhy Ave. Also, a roof was blown off an industrial building at 2300 Higgins Rd. The time of the event was approximated around 1230 pm CST.
At approximately 100 pm CST, two walls of a building being fabricated collapsed due to the wind, crushing one car. The location was 1800 Walnut, near the Untied Center, which is 2 miles WNW of Chicago.
A large steel beam billboard toppled 3 miles northwest of Chicago at approximately 200 pm CST.
A Chicago city worker was seriously injured when a tree fell and hit his vehicle at Archer and Western Ave in the Brighton Park neighborhood in Chicago at approximately 230 pm CST.
Fa��ade along roof of store on West Fullerton Avenue, which is 4 miles northwest of Chicago, was damaged around 300 pm CST. Wind also damaged a heating and air conditioning unit in Thornton, IL at 300 pm CST.
Large softwood tree snapped and fell on a car and Montana and Lincoln, approximately 3 miles north northwest in Chicago. Time was approximately 320 pm CST.
Large tree uprooted near 83rd St. exit off of I-94 at approximately 330 pm CST.

High Wind in LAKE, ILLINOIS
From 19-FEB-16 11:19:00 to 19-FEB-16 15:40:00 (CST-6)
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

High Wind in WILL, ILLINOIS
From 19-FEB-16 13:31:00 to 19-FEB-16 16:28:00 (CST-6)
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

At the NWS Office in Romeoville, 58 mph winds were recorded at 202 pm CST.

High Wind in LA SALLE, ILLINOIS
From 19-FEB-16 12:00:00 to 19-FEB-16 16:00:00 (CST-6)
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

Southwest winds gusted between 52 and 59 knots (60-68 mph) for around 4 hours. A small high profile truck was blown off Illinois Highway 23, 2 miles north of Ottawa,  around 1200 pm CST.  Also, there was a overturned tractor trailer on I-39 southbound just south of the I-80 and I-39 interchange, which is 2 miles northeast of LaSalle, IL.  This occurred around 400 pm CST.

High Wind in KANE, ILLINOIS
From 19-FEB-16 14:51:00 to 19-FEB-16 14:51:00 (CST-6)
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

High Wind in LEE, ILLINOIS
From 19-FEB-16 12:35:00 to 19-FEB-16 13:10:00 (CST-6)
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways