Scattered severe thunderstorms moved across northern Illinois on August 10th.

Thunderstorm Wind in WINNEBAGO, ILLINOIS
From 10-AUG-21 16:46:00 to 10-AUG-21 16:46:00 (CST-6)
Location: ROCKFORD
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A tree was blown down onto power lines along Auburn Street near Ridge Avenue.

Thunderstorm Wind in WINNEBAGO, ILLINOIS
From 10-AUG-21 16:50:00 to 10-AUG-21 16:50:00 (CST-6)
Location: ROCKFORD
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Power lines were blown down on State Street near Palm Avenue.

Thunderstorm Wind in COOK, ILLINOIS
From 10-AUG-21 18:48:00 to 10-AUG-21 18:48:00 (CST-6)
Location: LINCOLNWOOD
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

A tree was blown down near Kedzie Avenue and Touhy Avenue.

Thunderstorm Wind in WILL, ILLINOIS
From 10-AUG-21 18:53:00 to 10-AUG-21 18:53:00 (CST-6)
Location: PLAINFIELD
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Tree limbs were blown down on South River Road.

Thunderstorm Wind in COOK, ILLINOIS
From 10-AUG-21 18:55:00 to 10-AUG-21 18:55:00 (CST-6)
Location: ROGERS PARK
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A photo shared on social media showed a large tree limb blocking a road.

Thunderstorm Wind in DE KALB, ILLINOIS
From 10-AUG-21 17:33:00 to 10-AUG-21 17:34:00 (CST-6)
Location: FAIRDALE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Wind damage was reported to agriculture and some trees north of Quarry Road and southwest of Cherry Valley Road in northwest De Kalb County.

Thunderstorm Wind in MCHENRY, ILLINOIS
From 10-AUG-21 17:52:00 to 10-AUG-21 17:52:00 (CST-6)
Location: MARENGO
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A tree limb was blown down.

Flood in COOK, ILLINOIS
From 10-AUG-21 19:05:00 to 10-AUG-21 21:00:00 (CST-6)
Location: BRIGHTON PARK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Numerous reports were received of water on portions of Interstate 55 near Pulaski Road.

Tornado in DE KALB, ILLINOIS
From 10-AUG-21 17:33:00 to 10-AUG-21 17:34:00 (CST-6)
Location: ESMOND
Tornado F-scale: EFU
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A brief tornado touched down in a field north of Esmond.  No damage occurred with this tornado, which was determined by using high resolution satellite data.

Thunderstorm Wind in MCHENRY, ILLINOIS
From 10-AUG-21 17:37:00 to 10-AUG-21 17:37:00 (CST-6)
Location: ALGONQUIN
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Numerous trees and power lines were blown down.

Thunderstorm Wind in MCHENRY, ILLINOIS
From 10-AUG-21 17:39:00 to 10-AUG-21 17:39:00 (CST-6)
Location: CARY
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Numerous trees and power lines were blown down.

Thunderstorm Wind in MCHENRY, ILLINOIS
From 10-AUG-21 17:39:00 to 10-AUG-21 17:41:00 (CST-6)
Location: CRYSTAL LAKE
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Numerous trees, tree limbs and power lines were blown down in Crystal Lake including near Route 31.

Thunderstorm Wind in MCHENRY, ILLINOIS
From 10-AUG-21 18:00:00 to 10-AUG-21 18:00:00 (CST-6)
Location: DACY AIRPORT
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A wind gust to 67 mph was measured.  Large trees were uprooted.

Thunderstorm Wind in MCHENRY, ILLINOIS
From 10-AUG-21 18:05:00 to 10-AUG-21 18:05:00 (CST-6)
Location: WONDER LAKE
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Numerous trees were blown down.  One tree had most of its limbs removed.

Thunderstorm Wind in MCHENRY, ILLINOIS
From 10-AUG-21 18:05:00 to 10-AUG-21 18:05:00 (CST-6)
Location: MCHENRY
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Two large trees were blown down, one fell through a roof.

Thunderstorm Wind in KANE, ILLINOIS
From 10-AUG-21 18:11:00 to 10-AUG-21 18:11:00 (CST-6)
Location: ELGIN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Numerous tree limbs were blown down in Elgin and vicinity.

Thunderstorm Wind in KANE, ILLINOIS
From 10-AUG-21 18:12:00 to 10-AUG-21 18:12:00 (CST-6)
Location: WEST DUNDEE
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Multiple large trees and tree limbs were blown down throughout West Dundee.

Thunderstorm Wind in MCHENRY, ILLINOIS
From 10-AUG-21 18:15:00 to 10-AUG-21 18:15:00 (CST-6)
Location: ALGONQUIN
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A tree was uprooted and another tree was snapped.

Thunderstorm Wind in COOK, ILLINOIS
From 10-AUG-21 18:17:00 to 10-AUG-21 18:17:00 (CST-6)
Location: SCHAUMBURG
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

A tree limb approximately 5 inches in diameter was blown down.

Thunderstorm Wind in COOK, ILLINOIS
From 10-AUG-21 18:45:00 to 10-AUG-21 18:45:00 (CST-6)
Location: EVANSTON
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in COOK, ILLINOIS
From 10-AUG-21 18:45:00 to 10-AUG-21 18:47:00 (CST-6)
Location: EVANSTON
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Several large trees were uprooted or snapped in Evanston.

Thunderstorm Wind in COOK, ILLINOIS
From 10-AUG-21 18:18:00 to 10-AUG-21 18:18:00 (CST-6)
Location: SOUTH BARRINGTON
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Large trees were blown down.

Thunderstorm Wind in LAKE, ILLINOIS
From 10-AUG-21 18:30:00 to 10-AUG-21 18:30:00 (CST-6)
Location: GRAYSLAKE
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Shingles were blown off a roof in Grayslake.

Thunderstorm Wind in MCHENRY, ILLINOIS
From 10-AUG-21 18:03:00 to 10-AUG-21 18:03:00 (CST-6)
Location: BULL VALLEY
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Tree limbs were blown down near Bull Valley.

Thunderstorm Wind in COOK, ILLINOIS
From 10-AUG-21 18:44:00 to 10-AUG-21 18:44:00 (CST-6)
Location: WILMETTE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Photos shared on social media showed tree limbs blown down near Harrison Street and Prospect Street.

Thunderstorm Wind in WINNEBAGO, ILLINOIS
From 10-AUG-21 16:55:00 to 10-AUG-21 16:55:00 (CST-6)
Location: HARLEM
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

An 8 inch diameter tree was blown down along Spring Brook Road, west of Mulford Road.

Thunderstorm Wind in WINNEBAGO, ILLINOIS
From 10-AUG-21 17:00:00 to 10-AUG-21 17:00:00 (CST-6)
Location: ROSCOE
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A large tree was uprooted.

Thunderstorm Wind in OGLE, ILLINOIS
From 10-AUG-21 17:05:00 to 10-AUG-21 17:05:00 (CST-6)
Location: LEAF RIVER
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Multiple trees were blown down including some large tree limbs.

Thunderstorm Wind in WINNEBAGO, ILLINOIS
From 10-AUG-21 17:12:00 to 10-AUG-21 17:12:00 (CST-6)
Location: PECATONICA
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Power lines were blown down.

Thunderstorm Wind in WINNEBAGO, ILLINOIS
From 10-AUG-21 17:15:00 to 10-AUG-21 17:15:00 (CST-6)
Location: ROCKTON
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A photo shared on social media showed a large tree limb blown down.

Thunderstorm Wind in OGLE, ILLINOIS
From 10-AUG-21 17:25:00 to 10-AUG-21 17:25:00 (CST-6)
Location: ROCHELLE
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A private weather station measured a gust to 58 mph in northwest Rochelle.

Thunderstorm Wind in WINNEBAGO, ILLINOIS
From 10-AUG-21 17:29:00 to 10-AUG-21 17:29:00 (CST-6)
Location: NEW MILFORD
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Trees were blown down in the Cherokee Hills neighborhood of New Milford.

Thunderstorm Wind in MCHENRY, ILLINOIS
From 10-AUG-21 17:38:00 to 10-AUG-21 17:38:00 (CST-6)
Location: (3CK) LAKE IN THE HILLS AIRPORT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A billboard was destroyed along Virginia Avenue.

Thunderstorm Wind in DE KALB, ILLINOIS
From 10-AUG-21 17:44:00 to 10-AUG-21 17:44:00 (CST-6)
Location: SANDWICH
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tree was blown down onto power lines near Lisbon Street and Green Street.

Thunderstorm Wind in DU PAGE, ILLINOIS
From 10-AUG-21 18:33:00 to 10-AUG-21 18:33:00 (CST-6)
Location: ELMHURST
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Large tree limbs were blown down.

Thunderstorm Wind in DU PAGE, ILLINOIS
From 10-AUG-21 18:35:00 to 10-AUG-21 18:35:00 (CST-6)
Location: OAKBROOK TERRACE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A power line was blown down near Midwest Road and Butterfield Road.

Thunderstorm Wind in LAKE, ILLINOIS
From 10-AUG-21 18:36:00 to 10-AUG-21 18:36:00 (CST-6)
Location: BUFFALO GROVE
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Several trees were blown down.

Thunderstorm Wind in LAKE, ILLINOIS
From 10-AUG-21 18:38:00 to 10-AUG-21 18:38:00 (CST-6)
Location: WADSWORTH
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tree limbs 5 inches to 2 feet in diameter were blown down.

Thunderstorm Wind in COOK, ILLINOIS
From 10-AUG-21 18:45:00 to 10-AUG-21 18:45:00 (CST-6)
Location: SKOKIE
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A large tree was uprooted and fell onto a car.

Thunderstorm Wind in COOK, ILLINOIS
From 10-AUG-21 18:47:00 to 10-AUG-21 18:47:00 (CST-6)
Location: FRANKLIN PARK
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated to 60 mph near Manheim Road and Grand Avenue.

Thunderstorm Wind in COOK, ILLINOIS
From 10-AUG-21 18:48:00 to 10-AUG-21 18:48:00 (CST-6)
Location: HOMETOWN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A 6 inch diameter tree limb was blown down blocking 83rd Street near Cicero Avenue.

Thunderstorm Wind in COOK, ILLINOIS
From 10-AUG-21 18:49:00 to 10-AUG-21 18:49:00 (CST-6)
Location: BURBANK
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

A wind gust to 60 mph was measured in Burbank.

Thunderstorm Wind in BOONE, ILLINOIS
From 10-AUG-21 17:48:00 to 10-AUG-21 17:48:00 (CST-6)
Location: POPLAR GROVE AIRPORT
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A tree approximately 2 feet in diameter was snapped at its base.

Thunderstorm Wind in LAKE, ILLINOIS
From 10-AUG-21 17:48:00 to 10-AUG-21 17:48:00 (CST-6)
Location: ISLAND LAKE
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A wind gust to 60 mph was measured.

Thunderstorm Wind in KANE, ILLINOIS
From 10-AUG-21 17:53:00 to 10-AUG-21 17:53:00 (CST-6)
Location: (ARR) AURORA MUNICIPAL AIRPORT
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Hail in BOONE, ILLINOIS
From 10-AUG-21 17:50:00 to 10-AUG-21 17:50:00 (CST-6)
Location: BELVIDERE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in MCHENRY, ILLINOIS
From 10-AUG-21 17:50:00 to 10-AUG-21 17:50:00 (CST-6)
Location: LAWRENCE
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A private weather station measured a wind gust to 60 mph near Lawrence Road and Maxon Road.

Thunderstorm Wind in KANE, ILLINOIS
From 10-AUG-21 18:11:00 to 10-AUG-21 18:11:00 (CST-6)
Location: SLEEPY HOLLOW
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Large tree limbs were blown down and a large tree was uprooted near Beau Brummel Drive and Sleepy Hollow Road.

Thunderstorm Wind in COOK, ILLINOIS
From 10-AUG-21 18:53:00 to 10-AUG-21 18:53:00 (CST-6)
Location: UPTOWN
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A wind gust was measured to 62 mph at the Montrose Harbor Light.

Thunderstorm Wind in COOK, ILLINOIS
From 10-AUG-21 18:35:00 to 10-AUG-21 18:35:00 (CST-6)
Location: DES PLAINES
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A large tree limb was snapped.  Other tree damage was reported in the vicinity.

Thunderstorm Wind in COOK, ILLINOIS
From 10-AUG-21 18:30:00 to 10-AUG-21 18:30:00 (CST-6)
Location: ROSELLE
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A private weather station measured a wind gust to 60 mph near Roselle.