A powerful line of thunderstorms moved southeast across northern Illinois during the morning hours of July 24th producing widespread wind damage.

Thunderstorm Wind in DE KALB, ILLINOIS
From 24-JUL-12 04:35:00 to 24-JUL-12 04:35:00 (CST-6)
Location: WILKINSON
Magnitude: 61.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A corn silo collapsed three miles north of Route 64 and 1st Street.

Thunderstorm Wind in DE KALB, ILLINOIS
From 24-JUL-12 04:36:00 to 24-JUL-12 04:37:00 (CST-6)
Location: WILKINSON
Magnitude: 61.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees were blown down near Coltonville Road and 1st Street.  Another tree was blown down near Bethany Road and 1st Street.  The falling trees knocked down power lines.

Thunderstorm Wind in DE KALB, ILLINOIS
From 24-JUL-12 04:35:00 to 24-JUL-12 04:43:00 (CST-6)
Location: DE KALB
Magnitude: 61.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Numerous trees, tree limbs and power lines were blown down from the north side of Dekalb southeast to the Dekalb airport.

Thunderstorm Wind in DE KALB, ILLINOIS
From 24-JUL-12 04:40:00 to 24-JUL-12 04:40:00 (CST-6)
Location: DE KALB
Magnitude: 56.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Emergency Manager

A large metal light pole was split and toppled at a gas station near Hillcrest Avenue and 1st Street.

Thunderstorm Wind in KANKAKEE, ILLINOIS
From 24-JUL-12 05:55:00 to 24-JUL-12 05:55:00 (CST-6)
Location: BOURBONNAIS
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A 12 to 14 inch diameter tree was blown down near Route 45 and North Street.

Thunderstorm Wind in WINNEBAGO, ILLINOIS
From 24-JUL-12 04:11:00 to 24-JUL-12 04:11:00 (CST-6)
Location: ROCKFORD
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated to 60 mph in Rockford.

Thunderstorm Wind in WINNEBAGO, ILLINOIS
From 24-JUL-12 04:14:00 to 24-JUL-12 04:14:00 (CST-6)
Location: (RFD)GTR ROCKFORD AR
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in OGLE, ILLINOIS
From 24-JUL-12 04:27:00 to 24-JUL-12 04:27:00 (CST-6)
Location: ROCHELLE MUNI ARPT
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Thunderstorm Wind in MCHENRY, ILLINOIS
From 24-JUL-12 04:31:00 to 24-JUL-12 04:31:00 (CST-6)
Location: HARTLAND
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts to 67 mph were measured near the intersection of McGuire and Alden Roads.

Thunderstorm Wind in DE KALB, ILLINOIS
From 24-JUL-12 04:38:00 to 24-JUL-12 04:38:00 (CST-6)
Location: DE KALB MUNI ARPT
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Wind gusts were estimated to 70 mph at the Kishwaukee Hospital.

Thunderstorm Wind in MCHENRY, ILLINOIS
From 24-JUL-12 04:40:00 to 24-JUL-12 04:40:00 (CST-6)
Location: WOODSTOCK
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated to 65 mph.

Thunderstorm Wind in KANE, ILLINOIS
From 24-JUL-12 04:57:00 to 24-JUL-12 05:00:00 (CST-6)
Location: ELBURN
Magnitude: 61.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated to 70 mph.  Large tree limbs and power lines were blown down across the southside of Elburn.

Thunderstorm Wind in KANE, ILLINOIS
From 24-JUL-12 05:03:00 to 24-JUL-12 05:05:00 (CST-6)
Location: GENEVA
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Large tree limbs were blown down throughout Geneva.

Thunderstorm Wind in DU PAGE, ILLINOIS
From 24-JUL-12 05:09:00 to 24-JUL-12 05:09:00 (CST-6)
Location: (DPA)DUPAGE CO ARPT
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in DU PAGE, ILLINOIS
From 24-JUL-12 05:15:00 to 24-JUL-12 05:15:00 (CST-6)
Location: NAPERVILLE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated to 70 mph.

Thunderstorm Wind in COOK, ILLINOIS
From 24-JUL-12 05:06:00 to 24-JUL-12 05:06:00 (CST-6)
Location: PLUM GROVE ESTATES
Magnitude: 56.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Trained Spotter

A street light was blown down on Kirchoff Road.

Thunderstorm Wind in COOK, ILLINOIS
From 24-JUL-12 05:16:00 to 24-JUL-12 05:16:00 (CST-6)
Location: (ORD)O'HARE INTL ARP
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in KENDALL, ILLINOIS
From 24-JUL-12 05:20:00 to 24-JUL-12 05:20:00 (CST-6)
Location: PLATTVILLE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Two trees were split near Southworth Circle and Townsend Blvd.

Thunderstorm Wind in WILL, ILLINOIS
From 24-JUL-12 05:24:00 to 24-JUL-12 05:24:00 (CST-6)
Location: BARBERS CORNERS
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A tree was blown down near Washington and 87th Streets.

Thunderstorm Wind in COOK, ILLINOIS
From 24-JUL-12 05:24:00 to 24-JUL-12 05:24:00 (CST-6)
Location: WILMETTE
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were measured to 58 mph.  Small tree limbs were blown down.

Thunderstorm Wind in GRUNDY, ILLINOIS
From 24-JUL-12 05:25:00 to 24-JUL-12 05:25:00 (CST-6)
Location: DIVINE
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Outflow from thunderstorms produced a measured gust to 65 mph at the Dresden Nuclear Power Station.

Thunderstorm Wind in DU PAGE, ILLINOIS
From 24-JUL-12 05:30:00 to 24-JUL-12 05:30:00 (CST-6)
Location: NAPERVILLE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated to 70 mph.  Tree limbs were blown down.

Thunderstorm Wind in COOK, ILLINOIS
From 24-JUL-12 05:32:00 to 24-JUL-12 05:32:00 (CST-6)
Location: (MDW)MIDWAY ARPT CHI
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in WILL, ILLINOIS
From 24-JUL-12 05:32:00 to 24-JUL-12 05:32:00 (CST-6)
Location: PLAINFIELD
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated to 65 mph.

Thunderstorm Wind in COOK, ILLINOIS
From 24-JUL-12 05:35:00 to 24-JUL-12 05:35:00 (CST-6)
Location: (MDW)MIDWAY ARPT CHI
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Thunderstorm Wind in COOK, ILLINOIS
From 24-JUL-12 05:36:00 to 24-JUL-12 05:36:00 (CST-6)
Location: KEDZIE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated to 60 mph at Damen Avenue and Augusta Blvd.

Thunderstorm Wind in MCHENRY, ILLINOIS
From 24-JUL-12 04:45:00 to 24-JUL-12 04:45:00 (CST-6)
Location: WOODSTOCK
Magnitude: 61.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Utility poles were snapped at Kimball Avenue and Bunker Street.

Thunderstorm Wind in COOK, ILLINOIS
From 24-JUL-12 05:50:00 to 24-JUL-12 05:50:00 (CST-6)
Location: CHICAGO HAMMOND ARPT
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Thunderstorm Wind in COOK, ILLINOIS
From 24-JUL-12 05:55:00 to 24-JUL-12 05:55:00 (CST-6)
Location: HOMEWOOD
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated to 60 mph.  Many small tree limbs were blown down.

Thunderstorm Wind in COOK, ILLINOIS
From 24-JUL-12 05:44:00 to 24-JUL-12 05:44:00 (CST-6)
Location: HAWTHORNE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A light pole was blown down near Interstate 57 and 167th Street.

Thunderstorm Wind in GRUNDY, ILLINOIS
From 24-JUL-12 05:19:00 to 24-JUL-12 05:20:00 (CST-6)
Location: MINOOKA
Magnitude: 61.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees and tree limbs were blown down on the north side of Minooka.  One small tree fell onto a house.  The roof was torn off a baseball dugout and part of a cinder block wall fell at the Minooka Elementary School.  An old fence was uprooted and fell onto a police car at the municipal building.

Thunderstorm Wind in WILL, ILLINOIS
From 24-JUL-12 05:30:00 to 24-JUL-12 05:30:00 (CST-6)
Location: JOLIET
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated to 70 mph.  A ten inch diameter tree limb was snapped from a tree.

Thunderstorm Wind in KANE, ILLINOIS
From 24-JUL-12 04:45:00 to 24-JUL-12 04:45:00 (CST-6)
Location: ELBURN
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in DU PAGE, ILLINOIS
From 24-JUL-12 05:18:00 to 24-JUL-12 05:18:00 (CST-6)
Location: OAK BROOK
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

A five inch diameter tree was sheared off, approximately 30 feet in length.