During the evening of August 30th, a line of severe thunderstorms dropped south across the northeastern Illinois including the Chicago metro area producing damaging winds and large hail.

Thunderstorm Wind in LAKE, ILLINOIS
From 30-AUG-13 15:42:00 to 30-AUG-13 15:42:00 (CST-6)
Location: LINDENHURST
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Multiple trees of about 12 inches in diameter were blown down near the intersection of Deep Lake Road and Route 132.

Thunderstorm Wind in LAKE, ILLINOIS
From 30-AUG-13 15:59:00 to 30-AUG-13 15:59:00 (CST-6)
Location: WILDWOOD
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Multiple trees of 12 inches in diameter were blown down near the intersection of Route 45 and Casey Road.

Hail in MCHENRY, ILLINOIS
From 30-AUG-13 16:29:00 to 30-AUG-13 16:34:00 (CST-6)
Location: MARENGO
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Thunderstorm Wind in LAKE, ILLINOIS
From 30-AUG-13 16:00:00 to 30-AUG-13 16:05:00 (CST-6)
Location: VENETIAN VLG
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

An amateur radio operator measured 55 mph winds in Grayslake, however, locally higher winds were estimated from damage reports across the area.  Numerous branches were blown down on the 600 block of Stuart Street.  Multiple trees were blown down near the intersection of Route 132 and Route 45.  A large tree fell onto a car.

Hail in MCHENRY, ILLINOIS
From 30-AUG-13 16:42:00 to 30-AUG-13 16:44:00 (CST-6)
Location: MARENGO
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in COOK, ILLINOIS
From 30-AUG-13 16:50:00 to 30-AUG-13 16:56:00 (CST-6)
Location: SKOKIE
Magnitude: 61.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Multiple reports of estimated wind gusts to around 70 mph came in from Skokie and Evanston.  Three large trees were blown onto homes in Skokie.

Thunderstorm Wind in COOK, ILLINOIS
From 30-AUG-13 16:50:00 to 30-AUG-13 16:50:00 (CST-6)
Location: FOREST GLEN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Winds were estimated to around 60 mph with multiple tree branches blown down.

Thunderstorm Wind in COOK, ILLINOIS
From 30-AUG-13 17:00:00 to 30-AUG-13 17:00:00 (CST-6)
Location: NILES
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tree limbs up to 8 inches in diameter were blown down across Edison Park.  Multiple large tree limbs were split off from trees with some blocking roads and others falling onto power lines.

Hail in COOK, ILLINOIS
From 30-AUG-13 17:02:00 to 30-AUG-13 17:04:00 (CST-6)
Location: EDISON PARK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in COOK, ILLINOIS
From 30-AUG-13 17:05:00 to 30-AUG-13 17:06:00 (CST-6)
Location: AVONDALE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Penny size hail was reported near the intersection of Sheridan Road and Hollywood Avenue.

Hail in BOONE, ILLINOIS
From 30-AUG-13 17:08:00 to 30-AUG-13 17:09:00 (CST-6)
Location: BELVIDERE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in COOK, ILLINOIS
From 30-AUG-13 17:09:00 to 30-AUG-13 17:16:00 (CST-6)
Location: CRAGIN JCT
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

There were multiple reports of winds estimated between 60 and 70 mph in Chicago.  Winds estimated to 60 mph near the intersection of Irving Park Road and North Kostner Avenue caused trees to be blown down.  Large branches were blown down just northwest of Downtown where winds were estimated to 60 mph.  Winds were estimated to 70 mph at Montrose and Lake Shore Drive.

Hail in COOK, ILLINOIS
From 30-AUG-13 17:09:00 to 30-AUG-13 17:16:00 (CST-6)
Location: CRAGIN JCT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Penny size hail was reported just northwest of Downtown while quarter size hail was reported at Montrose and Lake Shore Drive.

Thunderstorm Wind in LA SALLE, ILLINOIS
From 30-AUG-13 20:40:00 to 30-AUG-13 20:40:00 (CST-6)
Location: HARDING
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Trees and crops were damaged near the intersection of Route 52 and Route 23.

Thunderstorm Wind in LIVINGSTON, ILLINOIS
From 30-AUG-13 20:55:00 to 30-AUG-13 20:55:00 (CST-6)
Location: CAYUGA
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Hail in LAKE, ILLINOIS
From 30-AUG-13 15:51:00 to 30-AUG-13 15:52:00 (CST-6)
Location: ROUND LAKE HGTS
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Penny size hail fell near the intersection of Grand Avenue and Cedar Lake Road.

Hail in LAKE, ILLINOIS
From 30-AUG-13 15:53:00 to 30-AUG-13 15:55:00 (CST-6)
Location: GRAYSLAKE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Quarter size hail fell near the intersection of Lake Street and Washington Street.

Thunderstorm Wind in LAKE, ILLINOIS
From 30-AUG-13 15:56:00 to 30-AUG-13 15:56:00 (CST-6)
Location: GRANDWOOD PARK
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Winds were estimated to 60 mph by a trained spotter near Grand Avenue and Almond Road.  Over 20 trees were blown down near Route 45 and Rollins Road.

Thunderstorm Wind in BOONE, ILLINOIS
From 30-AUG-13 15:59:00 to 30-AUG-13 15:59:00 (CST-6)
Location: BLAINE
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Limbs and large trees were blown down.

Hail in LAKE, ILLINOIS
From 30-AUG-13 16:03:00 to 30-AUG-13 16:04:00 (CST-6)
Location: GAGES LAKE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MCHENRY, ILLINOIS
From 30-AUG-13 16:00:00 to 30-AUG-13 16:02:00 (CST-6)
Location: HARVARD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LAKE, ILLINOIS
From 30-AUG-13 15:52:00 to 30-AUG-13 15:54:00 (CST-6)
Location: SHAW
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in LAKE, ILLINOIS
From 30-AUG-13 16:05:00 to 30-AUG-13 16:05:00 (CST-6)
Location: MUNDELEIN
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Multiple trees at least 18 inches in diameter were blown down near the intersection of Hammond Street and Seymour Avenue.  A 15-inch diameter tree was blown down on Lake Street just East of Butterfield Road.

Thunderstorm Wind in LAKE, ILLINOIS
From 30-AUG-13 15:44:00 to 30-AUG-13 15:44:00 (CST-6)
Location: VENETIAN VLG
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

The greatest damage occurred along Hazelwood Drive just south of Hastings Lake where several pine trees were snapped in the middle and many hardwood tree limbs up to 30 feet in length were broken off with power lines down.  Scattered structural damage was also reported.