A potent upper level disturbance interacted with a very warm and moist air mass on Wednesday afternoon and evening, leading to the development of severe thunderstorms. Widespread large hail and damaging winds occurred, as well as several tornadoes.

Tornado in KANKAKEE, ILLINOIS
From 12-JUN-13 18:50:00 to 12-JUN-13 18:51:00 (CST-6)
Location: DESELM
Tornado F-scale: EF0
Property damage: 35000
Crop damage: 0
Reported by: NWS Storm Survey

A tornado briefly touched down at a farmstead just south of the intersection of County Line Road and North 1500 West Road. The tornado collapsed a barn, killing a horse. Debris was tossed 75 yards southeast across the road into an adjacent field. Maximum estimated winds were 85 mph.

Thunderstorm Wind in LA SALLE, ILLINOIS
From 12-JUN-13 15:45:00 to 12-JUN-13 15:45:00 (CST-6)
Location: LELAND
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous large oak trees were blown down in town.

Hail in DE KALB, ILLINOIS
From 12-JUN-13 15:48:00 to 12-JUN-13 15:50:00 (CST-6)
Location: ROLLO
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Lightning in WILL, ILLINOIS
From 12-JUN-13 16:45:00 to 12-JUN-13 16:45:00 (CST-6)
Location: WOLFS
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Newspaper

A lightning strike put a hole in the roof, but did not start a fire.

Lightning in WILL, ILLINOIS
From 12-JUN-13 18:45:00 to 12-JUN-13 18:45:00 (CST-6)
Location: PLAINFIELD CLOW ARPT
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Newspaper

A lightning strike put a hole in the roof, but did not start a fire.

Hail in LEE, ILLINOIS
From 12-JUN-13 15:29:00 to 12-JUN-13 15:31:00 (CST-6)
Location: SUBLETTE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter size hail occurred near Highway 52 and Maytown Road.

Thunderstorm Wind in LEE, ILLINOIS
From 12-JUN-13 15:30:00 to 12-JUN-13 15:30:00 (CST-6)
Location: PAW PAW
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A large oak tree was blown over along with several large branches from other trees.

Tornado in DE KALB, ILLINOIS
From 12-JUN-13 15:32:00 to 12-JUN-13 15:37:00 (CST-6)
Location: SHABBONA
Tornado F-scale: EF1
Property damage: 20.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A National Weather Service storm survey determined an EF-1 tornado with maximum winds around 95 mph occurred near Shabbona.  The maximum damage occurred along approximately a mile long path where the tornado snapped numerous utility poles and around 80 percent of the large hardwood trees. Along the remainder of the path there was minor tree damage and minor shingle peeling, but for the most part the tornado did not intersect any structures.

Thunderstorm Wind in DE KALB, ILLINOIS
From 12-JUN-13 15:35:00 to 12-JUN-13 15:35:00 (CST-6)
Location: SHABBONA
Magnitude: 60.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees and power lines were blown down.

Hail in LA SALLE, ILLINOIS
From 12-JUN-13 16:03:00 to 12-JUN-13 16:05:00 (CST-6)
Location: EARLVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Thunderstorm Wind in KENDALL, ILLINOIS
From 12-JUN-13 16:08:00 to 12-JUN-13 16:08:00 (CST-6)
Location: KNOBHILL
Magnitude: 60.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A few utility poles and a large tree were blown down along Budd Road.

Thunderstorm Wind in KENDALL, ILLINOIS
From 12-JUN-13 16:11:00 to 12-JUN-13 16:16:00 (CST-6)
Location: BRISTOL STATION
Magnitude: 70.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A half dozen large grain bins were dented including one bin that shifted several feet and had its roof peeled away.  A large barn door was blown off into a house porch causing minor damage to the home.

Thunderstorm Wind in DE KALB, ILLINOIS
From 12-JUN-13 16:11:00 to 12-JUN-13 16:11:00 (CST-6)
Location: SANDWICH
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in KENDALL, ILLINOIS
From 12-JUN-13 16:15:00 to 12-JUN-13 16:15:00 (CST-6)
Location: LISBON CENTER
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees were blown down near the intersection of Route 47 and Route 52.

Thunderstorm Wind in DE KALB, ILLINOIS
From 12-JUN-13 15:35:00 to 12-JUN-13 15:35:00 (CST-6)
Location: ROLLO
Magnitude: 60.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A Sheriff reported trees and power lines down in the area around Shabbona Road and Sleepy Hollow Road.

Thunderstorm Wind in DE KALB, ILLINOIS
From 12-JUN-13 15:35:00 to 12-JUN-13 15:35:00 (CST-6)
Location: SHABBONA
Magnitude: 80.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Boats were tossed onto other boats at Shabbona Lake State Park.  Large trees were snapped at the trunk or uprooted.  Power poles were down near the state park office.

Thunderstorm Wind in DE KALB, ILLINOIS
From 12-JUN-13 15:39:00 to 12-JUN-13 15:39:00 (CST-6)
Location: ROLLO
Magnitude: 70.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A large grain bin was dented by strong winds.  Multiple large trees were blown down.

Hail in KANE, ILLINOIS
From 12-JUN-13 16:22:00 to 12-JUN-13 16:24:00 (CST-6)
Location: SUGAR GROVE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in KENDALL, ILLINOIS
From 12-JUN-13 16:31:00 to 12-JUN-13 16:31:00 (CST-6)
Location: LISBON
Magnitude: 60.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in KENDALL, ILLINOIS
From 12-JUN-13 16:32:00 to 12-JUN-13 16:34:00 (CST-6)
Location: OSWEGO
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in KENDALL, ILLINOIS
From 12-JUN-13 16:33:00 to 12-JUN-13 16:33:00 (CST-6)
Location: OSWEGO
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

A large tree was snapped.

Hail in KENDALL, ILLINOIS
From 12-JUN-13 16:35:00 to 12-JUN-13 16:37:00 (CST-6)
Location: OSWEGO
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in LA SALLE, ILLINOIS
From 12-JUN-13 16:35:00 to 12-JUN-13 16:37:00 (CST-6)
Location: TROY GROVE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Hail in KENDALL, ILLINOIS
From 12-JUN-13 16:40:00 to 12-JUN-13 16:43:00 (CST-6)
Location: BOULDER HILL
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Golfball size hail was reported near the intersection of Route 30 and Briarcliff Road.

Hail in LA SALLE, ILLINOIS
From 12-JUN-13 16:45:00 to 12-JUN-13 16:47:00 (CST-6)
Location: SERENA
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Hail in KANE, ILLINOIS
From 12-JUN-13 16:41:00 to 12-JUN-13 16:47:00 (CST-6)
Location: MONTGOMERY
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Multiple reports of hail up to the size of 1.5 inches were received between Montgomery and Aurora.

Hail in KENDALL, ILLINOIS
From 12-JUN-13 16:55:00 to 12-JUN-13 17:00:00 (CST-6)
Location: OSWEGO
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WILL, ILLINOIS
From 12-JUN-13 17:00:00 to 12-JUN-13 17:07:00 (CST-6)
Location: BOLINGBROOK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Multiple reports of hail of to the size of quarters were received between Romeoville and Lockport.  Reports include penny size hail at the intersection of Romeo Road and Frieh Drive, quarter size hail at 135th Street and Smith Road, and penny size hail near State Street and Route 7.

Hail in WILL, ILLINOIS
From 12-JUN-13 17:18:00 to 12-JUN-13 17:20:00 (CST-6)
Location: INGALLS PARK
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Penny size hail was reported near Route 30 and Gougar Road.

Hail in GRUNDY, ILLINOIS
From 12-JUN-13 17:20:00 to 12-JUN-13 17:22:00 (CST-6)
Location: SANK RIDGE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter size hail was reported at the I-80 east bound rest area.

Hail in COOK, ILLINOIS
From 12-JUN-13 17:20:00 to 12-JUN-13 17:22:00 (CST-6)
Location: FLOSSMOOR
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in WILL, ILLINOIS
From 12-JUN-13 17:21:00 to 12-JUN-13 17:22:00 (CST-6)
Location: MOKENA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in GRUNDY, ILLINOIS
From 12-JUN-13 17:28:00 to 12-JUN-13 17:29:00 (CST-6)
Location: MINOOKA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in COOK, ILLINOIS
From 12-JUN-13 17:30:00 to 12-JUN-13 17:32:00 (CST-6)
Location: DUNNING
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Penny size hail was reported at Milwaukee Avenue and Bryn Mawr Avenue.

Hail in WILL, ILLINOIS
From 12-JUN-13 17:30:00 to 12-JUN-13 17:32:00 (CST-6)
Location: CHANNAHON
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in COOK, ILLINOIS
From 12-JUN-13 17:31:00 to 12-JUN-13 17:33:00 (CST-6)
Location: HARWOOD HGTS
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in COOK, ILLINOIS
From 12-JUN-13 17:35:00 to 12-JUN-13 17:38:00 (CST-6)
Location: SAUK VLG
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Golfball size hail was reported at I-394 and Sauk Trail.

Thunderstorm Wind in WILL, ILLINOIS
From 12-JUN-13 18:03:00 to 12-JUN-13 18:03:00 (CST-6)
Location: PEOTONE
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Large tree limbs were blown down near the corner of 3rd Street and Corning Avenue.

Hail in WILL, ILLINOIS
From 12-JUN-13 18:13:00 to 12-JUN-13 18:15:00 (CST-6)
Location: CRETE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Golfball size hail was reported near Wayne Drive and Naoma Drive.

Thunderstorm Wind in WILL, ILLINOIS
From 12-JUN-13 18:10:00 to 12-JUN-13 18:10:00 (CST-6)
Location: CRETE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tree was blown down near Main Street and Exchange Street.

Hail in KANKAKEE, ILLINOIS
From 12-JUN-13 18:11:00 to 12-JUN-13 18:20:00 (CST-6)
Location: KANKAKEE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous reports of hail up to the size of golfballs were received between Kankakee and Bourbonnais.

Thunderstorm Wind in WILL, ILLINOIS
From 12-JUN-13 18:22:00 to 12-JUN-13 18:22:00 (CST-6)
Location: BEECHER
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in MCHENRY, ILLINOIS
From 12-JUN-13 18:28:00 to 12-JUN-13 18:30:00 (CST-6)
Location: MC HENRY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in KANKAKEE, ILLINOIS
From 12-JUN-13 18:30:00 to 12-JUN-13 18:30:00 (CST-6)
Location: MOMENCE
Magnitude: 60.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trees and power lines blown down on Hill Street.

Hail in KANKAKEE, ILLINOIS
From 12-JUN-13 18:48:00 to 12-JUN-13 18:49:00 (CST-6)
Location: MANTENO
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in KANKAKEE, ILLINOIS
From 12-JUN-13 19:02:00 to 12-JUN-13 19:02:00 (CST-6)
Location: KANKAKEE
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous large trees and branches were blown down.

Hail in GRUNDY, ILLINOIS
From 12-JUN-13 19:04:00 to 12-JUN-13 19:06:00 (CST-6)
Location: MAZON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm Wind in GRUNDY, ILLINOIS
From 12-JUN-13 19:07:00 to 12-JUN-13 19:07:00 (CST-6)
Location: MORRIS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A 16 inch diameter tree was uprooted at Rod and Gun Club Road.

Thunderstorm Wind in IROQUOIS, ILLINOIS
From 12-JUN-13 19:53:00 to 12-JUN-13 19:53:00 (CST-6)
Location: EASTBURN
Magnitude: 60.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Public

About half a dozen power poles were blown down approximately a mile south of Route 24 between Watseka and Sheldon.

Flash Flood in KANKAKEE, ILLINOIS
From 12-JUN-13 19:45:00 to 12-JUN-13 19:45:00 (CST-6)
Location: ALTORF
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Every underpass and numerous streets were flooded throughout Kankakee, Bradley, and Bourbonnais.  An AWOS in Kankakee reported 1.84 inches of rain in one hour.

Hail in DU PAGE, ILLINOIS
From 12-JUN-13 16:35:00 to 12-JUN-13 16:37:00 (CST-6)
Location: NAPERVILLE
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in KANKAKEE, ILLINOIS
From 12-JUN-13 18:58:00 to 12-JUN-13 18:58:00 (CST-6)
Location: MANTENO
Magnitude: 80.00 EG
Property damage: 180.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Along Route 45 between county roads 9000 and 10000, nine power poles were snapped at the base.  A church under construction was completely destroyed.

Hail in KENDALL, ILLINOIS
From 12-JUN-13 16:37:00 to 12-JUN-13 16:40:00 (CST-6)
Location: OSWEGO
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Multiple reports of penny to quarter sized hail were received from Oswego, including a quarter size hail report near the intersection of routes 30 and 34.

Hail in WILL, ILLINOIS
From 12-JUN-13 16:45:00 to 12-JUN-13 16:47:00 (CST-6)
Location: BOLINGBROOK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Multiple reports of hail up to the size of quarters were received from around Bolingbrook, including quarter size hail at the intersection of Remington Boulevard and Schmidt Road.

Hail in LA SALLE, ILLINOIS
From 12-JUN-13 16:49:00 to 12-JUN-13 16:51:00 (CST-6)
Location: SHERIDAN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Multiple reports of hail up to the size of quarters were received from near Sheridan.

Hail in COOK, ILLINOIS
From 12-JUN-13 17:00:00 to 12-JUN-13 17:07:00 (CST-6)
Location: SCHAUMBURG
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Multiple reports of hail up to the size of quarters were received from near Schaumburg.  This included reports of quarter size hail near Higgins Road and Plum Grove Road, nickel size hail near Plum Grove Road and Golf Road, and nickel size hail near Golf Road and Meacham Road.

Hail in KENDALL, ILLINOIS
From 12-JUN-13 16:25:00 to 12-JUN-13 16:27:00 (CST-6)
Location: PLANO
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in DE KALB, ILLINOIS
From 12-JUN-13 15:32:00 to 12-JUN-13 15:35:00 (CST-6)
Location: SHABBONA
Magnitude: 1.75 
Property damage: 0.00K
Reported by: NWS Storm Survey

Large hail was reported by the public.  A storm survey by the NWS determined approximately one mile wide swath of major crop shredding due to hail.

Thunderstorm Wind in KENDALL, ILLINOIS
From 12-JUN-13 16:25:00 to 12-JUN-13 16:27:00 (CST-6)
Location: PLANO
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winds were estimated to 70 mph.  Numerous trees were bent over between Plano and Yorkville.

Hail in WINNEBAGO, ILLINOIS
From 12-JUN-13 15:30:00 to 12-JUN-13 15:32:00 (CST-6)
Location: CHERRY VLY
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Golfball size hail occurred near the intersection of I-39 and I-90.

Hail in DU PAGE, ILLINOIS
From 12-JUN-13 16:42:00 to 12-JUN-13 16:45:00 (CST-6)
Location: NAPERVILLE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter