Strong to severe thunderstorms moved across parts of northern Illinois during the afternoon hours of November 22nd. These storms produced two tornadoes, hail, heavy rain and some flooding.

Tornado in MCHENRY, ILLINOIS
From 22-NOV-10 15:31:00 to 22-NOV-10 15:32:00 (CST-6)
Location: BIG FOOT PRAIRIE
Tornado F-scale: EF0
Property damage: 0
Crop damage: 0
Reported by: NWS Storm Survey

A tornado touched down in the extreme northern part of McHenry County and then quickly moved north into Walworth County in southern Wisconsin.

Tornado in WINNEBAGO, ILLINOIS
From 22-NOV-10 15:00:00 to 22-NOV-10 15:03:00 (CST-6)
Location: ROCK CUT STATE PARK
Tornado F-scale: EF2
Property damage: 500000
Crop damage: 0
Reported by: NWS Storm Survey

Based on an eyewitness report, a tornado touched down in the backyard of a home just west of Interstate 39, on the eastern edge of a subdivision. The tornado then blew over a school bus near the intersection of Argyle and Harlem Roads. There were six people on the bus, the driver and five children. All six people were taken to the hospital but none of the injuries were serious. The tornado then knocked down eleven electrical high tension towers just southwest of the same intersection. The tornado was likely at EF2 intensity at this time and as it crossed into Boone County.

Tornado in MCHENRY, ILLINOIS
From 22-NOV-10 15:21:00 to 22-NOV-10 15:25:00 (CST-6)
Location: CHEMUNG
Tornado F-scale: EF0
Property damage: 0
Crop damage: 0
Reported by: NWS Storm Survey

A tornado touched down in eastern Winnebago County, moved northeast across Boone County and then crossed into northwest McHenry County. Damage consisted of mainly sporadic tree damage across McHenry County where the tornado appears to have dissipated at 325 pm CST.

Tornado in BOONE, ILLINOIS
From 22-NOV-10 15:03:00 to 22-NOV-10 15:21:00 (CST-6)
Location: ARGYLE
Tornado F-scale: EF2
Property damage: 4500000
Crop damage: 0
Reported by: NWS Storm Survey

A tornado which touched down in eastern Winnebago County, crossed into western Boone County and moved across largely open rural fields towards the town of Caledonia. Significant damage occurred to at least six buildings in Caledonia, with approximately 20 additional buildings sustaining minor damage. Several large trees were snapped or uprooted, and a grain bin partially collapsed. The tornado was again likely at EF2 intensity at this time. The tornado then continued northeast from Caledonia, downing several power poles and causing damage ranging from blown off roofs to completely destroying at least three farm outbuildings. One of these buildings, located two miles northwest of Capron, had also been damaged during the January 2008 tornado. The tornado then crossed into McHenry County.

Thunderstorm Wind in LEE, ILLINOIS
From 22-NOV-10 14:37:00 to 22-NOV-10 14:37:00 (CST-6)
Location: DIXON
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees and power lines were blown down.

Hail in LA SALLE, ILLINOIS
From 22-NOV-10 15:00:00 to 22-NOV-10 15:02:00 (CST-6)
Location: PERU
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in LA SALLE, ILLINOIS
From 22-NOV-10 15:23:00 to 22-NOV-10 15:23:00 (CST-6)
Location: EARLVILLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A tree was blown down blocking a road.

Hail in DE KALB, ILLINOIS
From 22-NOV-10 15:25:00 to 22-NOV-10 15:27:00 (CST-6)
Location: WATERMAN
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail was estimated between quarter and golf ball size.

Hail in KANE, ILLINOIS
From 22-NOV-10 15:35:00 to 22-NOV-10 15:36:00 (CST-6)
Location: MAPLE PARK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter size hail was reported at Route 38 and County Line Road.

Thunderstorm Wind in KANE, ILLINOIS
From 22-NOV-10 15:50:00 to 22-NOV-10 15:50:00 (CST-6)
Location: GENEVA
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Newspaper

A three-sided store directory was blown off its foundation.  Awnings were blown off two stores and four panels of a fence were destroyed.

Thunderstorm Wind in WILL, ILLINOIS
From 22-NOV-10 16:30:00 to 22-NOV-10 16:30:00 (CST-6)
Location: BARBERS CORNERS
Magnitude: 50.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Newspaper

A billboard was blown down at a car dealership on Route 53, just south of Interstate 55.  The billboard crushed several cars.

Lightning in WINNEBAGO, ILLINOIS
From 22-NOV-10 15:50:00 to 22-NOV-10 15:50:00 (CST-6)
Location: LOVES PARK
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Newspaper

An unoccupied restaurant was struck by lightning near North Second Street and Wood Avenue.

Flood in COOK, ILLINOIS
From 22-NOV-10 16:00:00 to 22-NOV-10 20:00:00 (CST-6)
Location: DES PLAINES
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rain caused flooding across parts of Cook county and the City of Chicago.  Six to seven inches of standing water was reported on north Lincoln Avenue near the intersection at Peterson.  A runway at Midway Airport was closed due to standing water.  Minor street flooding was reported at the intersection of Ogden Avenue and First Avenue in Brookfield.  Rainfall totals included 2.02 inches in Berwyn; 1.75 inches 4 miles northeast of Brookfield; 1.53 inches at Midway Airport and 1.37 inches at Chicago O'Hare Airport.

Thunderstorm Wind in WINNEBAGO, ILLINOIS
From 22-NOV-10 14:59:00 to 22-NOV-10 15:00:00 (CST-6)
Location: HARLEM
Magnitude: 50.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Thunderstorm wind damage occurred near McFarland and Thomas Drive in Loves Park where shingles were blown off roofs and fascia was damaged on several houses.