Thunderstorms developed over northern Illinois during the late evening of June 8th and continued into the morning hours of June 9th.  Many areas sustained wind damage and heavy rain caused flooding in some areas.

Thunderstorm Wind in MCHENRY, ILLINOIS
From 08-JUN-11 20:24:00 to 08-JUN-11 20:24:00 (CST-6)
Location: SOLON MILLS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

An estimated one foot diameter tree was snapped near the intersection of Route 12 and Winn Road.

Thunderstorm Wind in LAKE, ILLINOIS
From 08-JUN-11 20:53:00 to 08-JUN-11 20:53:00 (CST-6)
Location: VERNON HILLS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A 15 foot long and 3 inch diamter tree limb was snapped.

Hail in WINNEBAGO, ILLINOIS
From 08-JUN-11 21:03:00 to 08-JUN-11 21:05:00 (CST-6)
Location: WEST END
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Golfball size hail was reported at WREX-TV studios.

Thunderstorm Wind in OGLE, ILLINOIS
From 08-JUN-11 21:04:00 to 08-JUN-11 21:04:00 (CST-6)
Location: FORRESTON
Magnitude: 55.00 EG
Crop damage: 0.00K
Reported by: Law Enforcement

Trees and power lines were reported down by Ogle County Sheriff.

Thunderstorm Wind in BOONE, ILLINOIS
From 08-JUN-11 21:10:00 to 08-JUN-11 21:10:00 (CST-6)
Location: POPLAR GROVE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winds were estimated to 60 mph.

Thunderstorm Wind in WINNEBAGO, ILLINOIS
From 08-JUN-11 21:11:00 to 08-JUN-11 21:11:00 (CST-6)
Location: (RFD)GTR ROCKFORD AR
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in OGLE, ILLINOIS
From 08-JUN-11 21:16:00 to 08-JUN-11 21:16:00 (CST-6)
Location: BYRON
Magnitude: 55.00 EG
Crop damage: 0.00K
Reported by: Law Enforcement

Trees and power lines were reported down by Ogle County Sheriff.

Hail in BOONE, ILLINOIS
From 08-JUN-11 21:22:00 to 08-JUN-11 21:24:00 (CST-6)
Location: BELVIDERE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail from marble size to golfball size was reported.

Hail in LAKE, ILLINOIS
From 08-JUN-11 21:50:00 to 08-JUN-11 21:50:00 (CST-6)
Location: GURNEE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Hail in LAKE, ILLINOIS
From 08-JUN-11 21:50:00 to 08-JUN-11 21:50:00 (CST-6)
Location: GURNEE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Flash Flood in COOK, ILLINOIS
From 09-JUN-11 07:30:00 to 09-JUN-11 13:00:00 (CST-6)
Location: BEVERLY HILLS
Flood cause: Heavy Rain
Property damage: 1.00M
Crop damage: 0.00K
Reported by: Newspaper

Over 60 streets and 1,000 basements were flooded in and around the 19th Ward of the City of Chicago.  Numerous cars were stranded in the flood waters.  The force of the flood waters caused sewers to explode on 105th Street.

Thunderstorm Wind in KENDALL, ILLINOIS
From 08-JUN-11 22:50:00 to 08-JUN-11 22:50:00 (CST-6)
Location: PLANO
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Law Enforcement

A utility pole was snapped near Fox River Drive.

Thunderstorm Wind in KANE, ILLINOIS
From 08-JUN-11 22:53:00 to 08-JUN-11 22:53:00 (CST-6)
Location: SUGAR GROVE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Multiple large trees were downed near the intersection of Route 47 and Baseline Road.

Thunderstorm Wind in KENDALL, ILLINOIS
From 08-JUN-11 23:10:00 to 08-JUN-11 23:10:00 (CST-6)
Location: LISBON
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A tree was reported down near the intersection of Lisbon Road and Route 52.

Hail in KANKAKEE, ILLINOIS
From 08-JUN-11 23:40:00 to 08-JUN-11 23:42:00 (CST-6)
Location: BRADLEY
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in COOK, ILLINOIS
From 09-JUN-11 02:00:00 to 09-JUN-11 02:00:00 (CST-6)
Location: HOMETOWN
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Sustained winds of 48 to 50 mph with peak gusts to 58 mph occurred at the intersection of 91st Street and Clifton Park.

Thunderstorm Wind in COOK, ILLINOIS
From 09-JUN-11 02:00:00 to 09-JUN-11 02:00:00 (CST-6)
Location: PALOS GARDENS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A five inch diameter tree fell onto a home near Home Avenue and Ridgeland Avenue.

Strong Wind in BOONE, ILLINOIS
From 08-JUN-11 19:45:00 to 08-JUN-11 19:45:00 (CST-6)
Magnitude: 48.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Trained Spotter

Strong winds blew shingles off the roof of a house and snapped a 3-inch diameter 6-foot tall tree about one foot above the ground.  Nearby towns of South Beloit and Machesney Park measured 55 mph gusts.

Strong Wind in KENDALL, ILLINOIS
From 08-JUN-11 21:33:00 to 08-JUN-11 21:33:00 (CST-6)
Magnitude: 48.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Strong winds caused a tree limb of unknown size to fall onto a car.

Thunderstorm Wind in WINNEBAGO, ILLINOIS
From 08-JUN-11 21:05:00 to 08-JUN-11 21:05:00 (CST-6)
Location: COLONIAL GARDENS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A 6 inch diameter tree was snapped near the 7800 block of Mildred Road. A 10 inch diameter tree was downed near the intersection of Wilson Avenue and Waterview Road.

Thunderstorm Wind in WINNEBAGO, ILLINOIS
From 08-JUN-11 21:11:00 to 08-JUN-11 21:11:00 (CST-6)
Location: EAST ROCKFORD
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A 6 inch diameter tree was snapped near the intersection of Alpine Road and Harrison Avenue.

Flash Flood in COOK, ILLINOIS
From 09-JUN-11 09:30:00 to 09-JUN-11 11:30:00 (CST-6)
Location: PARK FOREST SOUTH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rain caused Governors Highway just south of Stuenkel Road to become impassible with several inches of flowing water.  One car became stalled on the side of the road.  A trained spotter reported 3.41 inches of rain.

Flood in KANE, ILLINOIS
From 09-JUN-11 05:55:00 to 09-JUN-11 09:00:00 (CST-6)
Location: MARYWOOD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A ramp from Farnsworth Avenue to Interstate 88 flooded with six inches of standing water.

Flood in LEE, ILLINOIS
From 09-JUN-11 06:18:00 to 09-JUN-11 08:30:00 (CST-6)
Location: AMBOY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Multiple intersections were flooded in the town of Amboy.

Flood in KENDALL, ILLINOIS
From 09-JUN-11 07:09:00 to 09-JUN-11 08:30:00 (CST-6)
Location: PLATTVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Middle Aux Sable Creek was out of its bank near Ashley Road.

Flood in KENDALL, ILLINOIS
From 09-JUN-11 07:17:00 to 09-JUN-11 08:30:00 (CST-6)
Location: OSWEGO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rain caused 10 to 12 inches of standing water at the intersection of Dolores Street and Charles Court.

Flood in COOK, ILLINOIS
From 09-JUN-11 07:40:00 to 09-JUN-11 10:00:00 (CST-6)
Location: WESTERN SPGS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Heavy rain caused 4 to 8 inches of standing water on La Grange Road between 55th Street and Plainfield Road.

Hail in BOONE, ILLINOIS
From 08-JUN-11 21:12:00 to 08-JUN-11 21:13:00 (CST-6)
Location: POPLAR GROVE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Multiple reports of penny to quarter size hail came in from Poplar Grove.

Hail in OGLE, ILLINOIS
From 08-JUN-11 21:29:00 to 08-JUN-11 21:30:00 (CST-6)
Location: POLO
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flash Flood in COOK, ILLINOIS
From 09-JUN-11 07:00:00 to 09-JUN-11 12:00:00 (CST-6)
Location: LAMBERT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Torrential rains between 4 and 5 inches left numerous roads and areas flooded in and around Orland Park and Palos Park.  Water was seen pouring out of storm drains and sewers.  Several roads were closed due to flooding and vehicles were stranded in flood waters along Route 83 and 127th Street.

Flood in DU PAGE, ILLINOIS
From 09-JUN-11 07:55:00 to 09-JUN-11 10:00:00 (CST-6)
Location: BURR RIDGE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Heavy rain caused 4 to 12 inches of standing water on the southbound lanes of Interstate 55 approximately a quarter mile east of Route 83.  An observer in nearby Oak Brook measured a storm total rainfall of 2.58 inches.

Flood in WILL, ILLINOIS
From 09-JUN-11 08:05:00 to 09-JUN-11 10:00:00 (CST-6)
Location: BRUNNING
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Heavy rain caused 5 to 10 inches of standing water at the intersection of Joliet Road and Bluff Road.

Flood in WILL, ILLINOIS
From 09-JUN-11 08:15:00 to 09-JUN-11 10:00:00 (CST-6)
Location: ROMEOVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Heavy rain caused 4 to 8 inches of standing water on Route 53, approximately a third of a mile north of Taylor Road.  The National Weather Service in Romeoville measured a storm total rainfall of 5.29 inches.

Flood in COOK, ILLINOIS
From 09-JUN-11 09:47:00 to 09-JUN-11 11:00:00 (CST-6)
Location: CHICAGO RIDGE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

High standing water was reported at the intersection of 103rd Street and Central Avenue.

Flood in WILL, ILLINOIS
From 09-JUN-11 10:23:00 to 09-JUN-11 12:00:00 (CST-6)
Location: PEOTONE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rain measuring 2.74 inches caused 8 inches of standing water at the intersection of North Peotone Road and Center Road.

Lightning in LA SALLE, ILLINOIS
From 09-JUN-11 06:15:00 to 09-JUN-11 06:15:00 (CST-6)
Location: TONICA
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Newspaper

A one story home on Uncas Street was struck by lightning.  The fire and damage was confined to the living room and front door area.

Lightning in LAKE, ILLINOIS
From 09-JUN-11 07:24:00 to 09-JUN-11 07:24:00 (CST-6)
Location: WAUCONDA
Property damage: 150.00K
Crop damage: 0.00K
Reported by: Newspaper

A house was struck by lightning which started a fire.  The home suffered severe damage and was left unhabitable.

Thunderstorm Wind in DU PAGE, ILLINOIS
From 09-JUN-11 06:50:00 to 09-JUN-11 06:50:00 (CST-6)
Location: LISLE
Magnitude: 55.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Newspaper

A gas station canopy at Ogden and Yackley Avenues was blown over, crushing three gas pumps.

Flash Flood in DU PAGE, ILLINOIS
From 09-JUN-11 07:00:00 to 09-JUN-11 10:00:00 (CST-6)
Location: JEWELL RD
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous streets were flooded in and around Wheaton.  Some streets were closed due to high standing water, including Main Street, where a car was stranded in flood waters.  Lake Ellyn in Glen Ellyn overflowed its banks and began flooding nearby areas.

Lightning in COOK, ILLINOIS
From 09-JUN-11 00:30:00 to 09-JUN-11 00:30:00 (CST-6)
Location: NORTH RIVERSIDE
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Newspaper

Lightning struck the chimney of a house on Herrick Road.  The chimney was destroyed.  The lightning apparently started a fire on the opposite side of the house, causing minimal additional damage.

Thunderstorm Wind in COOK, ILLINOIS
From 09-JUN-11 07:00:00 to 09-JUN-11 07:00:00 (CST-6)
Location: PALOS GARDENS
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

A large tree was completely uprooted along 68th Court.

Thunderstorm Wind in COOK, ILLINOIS
From 09-JUN-11 07:00:00 to 09-JUN-11 07:02:00 (CST-6)
Location: BEVERLY HILLS
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

At least 57 trees were blown down in and around the Beverly area.

Thunderstorm Wind in COOK, ILLINOIS
From 09-JUN-11 06:55:00 to 09-JUN-11 06:55:00 (CST-6)
Location: BROOKFIELD
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Tree limbs and power lines were blown down.

Flash Flood in WILL, ILLINOIS
From 09-JUN-11 06:10:00 to 09-JUN-11 08:00:00 (CST-6)
Location: NORMANTOWN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rains caused road closures along Route 30 between 127th Street and 135th Street.  At the National Weather Service in Romeoville, a storm total of 5.29 inches of rain was measured.