A major tornado outbreak impacted the Midwest and Ohio Valley on November 17th. A powerful low pressure system across the plains states steered warmth and moisture northward for nearly two days, with dew points rising into the mid 60s. This coupled with temperatures around 70�� resulted in unseasonably strong instability for thunderstorms to develop. High wind shear and a cold front sweeping eastward made up the remaining ingredients of an environment favorable for supercells capable of long-lived significant tornadoes. Within the WFO LOT county warning area, ten tornadoes were confirmed, including three EF-2 tornadoes. As the event evolved, the system became linear with numerous reports of straight line wind damage. Behind the thunderstorms, a wake low developed with wind gusts to around 60 mph.

Tornado in IROQUOIS, ILLINOIS
From 17-NOV-13 13:14:00 to 17-NOV-13 13:15:00 (CST-6)
Location: FOUNTAIN CREEK
Tornado F-scale: EF0
Property damage: 0
Crop damage: 0
Reported by: NWS Storm Survey

This is a continuation of a tornado that began in Champaign County (NWS Central Illinois) and tracked across Vermilion County before entering the NWS Chicago county warning area in southern Iroquois County. Three homes had minor damage to either outbuildings or large trees.

Thunderstorm Wind in DU PAGE, ILLINOIS
From 17-NOV-13 11:29:00 to 17-NOV-13 11:29:00 (CST-6)
Location: (DPA)DUPAGE CO ARPT
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in DU PAGE, ILLINOIS
From 17-NOV-13 11:37:00 to 17-NOV-13 11:39:00 (CST-6)
Location: CLOVERDALE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winds were estimated between 65 mph and 70 mph.

Hail in WINNEBAGO, ILLINOIS
From 17-NOV-13 11:38:00 to 17-NOV-13 11:40:00 (CST-6)
Location: CHERRY VLY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in COOK, ILLINOIS
From 17-NOV-13 13:17:00 to 17-NOV-13 13:17:00 (CST-6)
Location: SCHAUMBURG
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous limbs were blown down, the largest of which was around a foot and a half in diameter.

Thunderstorm Wind in DU PAGE, ILLINOIS
From 17-NOV-13 11:46:00 to 17-NOV-13 11:46:00 (CST-6)
Location: LISLE
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in COOK, ILLINOIS
From 17-NOV-13 11:56:00 to 17-NOV-13 11:56:00 (CST-6)
Location: NORTH NORTHFIELD
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

There were two reports of winds estimated to 70 mph near Northbrook.  Tree tops were bent horizontally.

Hail in DU PAGE, ILLINOIS
From 17-NOV-13 12:05:00 to 17-NOV-13 12:05:00 (CST-6)
Location: BELMONT
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Nickel size hail was reported at Hobson Road and Greene Road.

Thunderstorm Wind in LAKE, ILLINOIS
From 17-NOV-13 13:25:00 to 17-NOV-13 13:25:00 (CST-6)
Location: BENET LAKE
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Shingles were blown off of a roof and trees were blown down.

Hail in COOK, ILLINOIS
From 17-NOV-13 13:36:00 to 17-NOV-13 13:37:00 (CST-6)
Location: EVANSTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter size hail was reported near Sheridan Road and South Boulevard.

Tornado in LA SALLE, ILLINOIS
From 17-NOV-13 11:33:00 to 17-NOV-13 11:41:00 (CST-6)
Location: RUTLAND
Tornado F-scale: EF2
Property damage: 150.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is a continuation of a tornado that began in Tazewell County (NWS Central Illinois) and tracked across Woodford County, entering NWS Chicago county warning area in La Salle County, and finally ending in Livingston County.  The tornado entered La Salle County approximately half a mile east of State Route 251 north of Minonk where several power poles were snapped at the base along County Line Road.  On E 7th Road, a home had large portions of the roof removed.  Small outbuildings were completely destroyed.  More power poles were snapped on E 8th Road and again on N 2nd Road near the intersection of E 10th Road.  A machinery shed was completely destroyed on N 2nd Road about half a mile west of Dana.  On E 11th Road just north of Dana, an addition to a home was completely leveled with several outbuildings destroyed.  This tornado entered Livingston County just northeast of Dana around 11:41 AM CST.  Maximum wind speeds were estimated to be up to 135 mph.

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

Hail in DU PAGE, ILLINOIS
From 17-NOV-13 12:11:00 to 17-NOV-13 12:11:00 (CST-6)
Location: VILLA PARK
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flood in KANE, ILLINOIS
From 17-NOV-13 13:40:00 to 17-NOV-13 15:00:00 (CST-6)
Location: ELGIN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several streets in Elgin were flooded with one to two feet of water.  A spotter measured 0.95 inches of rain.

Thunderstorm Wind in LA SALLE, ILLINOIS
From 17-NOV-13 12:20:00 to 17-NOV-13 12:20:00 (CST-6)
Location: RANSOM
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tops of trees were blown down.  Sheet metal was damaged at a construction site.

Tornado in LIVINGSTON, ILLINOIS
From 17-NOV-13 11:41:00 to 17-NOV-13 11:47:00 (CST-6)
Location: LONG PT
Tornado F-scale: EF2
Property damage: 75.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is a continuation of a tornado that began in Tazewell County (NWS Central Illinois) and tracked across Woodford County, entering NWS Chicago county warning area in La Salle County, and finally ending in Livingston County. The tornado entered Livingston County about a third of a mile north of E 2400 N Road where power poles were leaning.  Several outbuildings were heavily damaged or destroyed on E 2475 N Road.  Hardwood trees were snapped on N 200 E Road as well as wooden power poles.  A large shed housing a fire engine was completely destroyed with the fire engine rolled onto its side on Long Point Blacktop Road near the intersection of N 400 E Road.  On the northeast side of that intersection, a wooded area saw extensive tree damage with numerous trees sheared off about 20 to 30 feet from their bases.  The damage path ended about half a mile north of Long Point Blacktop Road between N 450 E Road and Route 23.  Maximum wind speeds were estimated to be up to 135 mph.

Hail in GRUNDY, ILLINOIS
From 17-NOV-13 12:25:00 to 17-NOV-13 12:27:00 (CST-6)
Location: DIVINE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Thunderstorm Wind in FORD, ILLINOIS
From 17-NOV-13 12:31:00 to 17-NOV-13 12:32:00 (CST-6)
Location: CABERY
Magnitude: 56.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A roof was lifted off a garage causing the collapse of a cinder block building.  A chimney was toppled at St Joseph Church.  A home TV antenna tower was blown over.  There were sporadic uprooted trees and downed limbs throughout town.

Thunderstorm Wind in KANKAKEE, ILLINOIS
From 17-NOV-13 12:32:00 to 17-NOV-13 12:32:00 (CST-6)
Location: REDDICK
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A large tree was blown over onto Route 17.

High Wind in KANKAKEE, ILLINOIS
From 17-NOV-13 14:15:00 to 17-NOV-13 14:15:00 (CST-6)
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

High Wind in COOK, ILLINOIS
From 17-NOV-13 15:51:00 to 17-NOV-13 15:52:00 (CST-6)
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The ASOS at O'Hare measured 59 mph wind gusts, while the ASOS at Midway measured 58 mph wind gusts.

Tornado in LIVINGSTON, ILLINOIS
From 17-NOV-13 11:43:00 to 17-NOV-13 11:46:00 (CST-6)
Location: LONG PT
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Video was received from a storm chaser showing a satellite tornado that formed just south of the long tracked tornado that moved across Livingston County.  This tornado only lasted a few minutes and appeared to stay over open fields with no damage evident.  Maximum wind speeds were estimated to be up to 75 mph.

Tornado in GRUNDY, ILLINOIS
From 17-NOV-13 12:22:00 to 17-NOV-13 12:26:00 (CST-6)
Location: CENTRAL CITY
Tornado F-scale: EF2
Property damage: 10.75M
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado formed just northwest of the intersection of E Braceville Road and S Carbon Hill Road where several softwood trees were uprooted.  The tornado moved northeast just north of E Reed Road where a single family residence sustained visible damage to its exterior while a metal outbuilding sustained roof and exterior wall damage.  A single family home sustained considerable damage near the intersection of Berta Road and Spring Road where two people were injured.  The tornado continued into a subdivision north of Spring Road where widespread minor damage occurred to several dozen homes.  Several homes received more substantial damage though, including partial loss of roofs and second story walls.  The tornado continued into Will County around 12:26 PM CST.  Maximum wind speeds were estimated to be up to 125 mph.

Thunderstorm Wind in COOK, ILLINOIS
From 17-NOV-13 12:35:00 to 17-NOV-13 12:35:00 (CST-6)
Location: OAK LAWN
Magnitude: 70.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A roof was blown off a gas station at 99th and Cicero.  Tree limbs and power lines were blown down across town.

Hail in COOK, ILLINOIS
From 17-NOV-13 12:35:00 to 17-NOV-13 12:37:00 (CST-6)
Location: EVANSTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tornado in WILL, ILLINOIS
From 17-NOV-13 12:42:00 to 17-NOV-13 12:48:00 (CST-6)
Location: WILTON
Tornado F-scale: EF2
Property damage: 750.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado touched down south of W Bruns Road and east of S Kankakee Street.  This tornado quickly intensified to EF-2 damaging five houses along Bruns Road rendering them uninhabitable by removing large sections of the roofs and leading to partial wall collapse. Four high tension power line towers were bent along S Schoolhouse Road.  Two houses and a barn were heavily damaged on W Dralle Road where large portions of the roofs were ripped off.  Several trees were snapped and uprooted as well.  Another farm on S Scheer Road had roof damage consistent to EF-1 intensity.  The last sign of damage occurred just south of Steger Road where large branches were blown down.  Maximum winds were estimated to around 125 mph.

Thunderstorm Wind in KANKAKEE, ILLINOIS
From 17-NOV-13 12:35:00 to 17-NOV-13 12:35:00 (CST-6)
Location: BUCKINGHAM
Magnitude: 60.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Route 115 was closed between 17000W and 16000W roads due to several power snapped power poles.  Two power lines were blown down on 5000S Road between 16000W and 15000W roads.  Several south facing windows were blown in on a house.  A roof was blown off a shed.

Tornado in KANKAKEE, ILLINOIS
From 17-NOV-13 13:00:00 to 17-NOV-13 13:01:00 (CST-6)
Location: PUDER
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado formed along the Kankakee-Will County Line just west of N 17480 E Road.  Large branches from hardwood trees were broken off while an older softwood tree was snapped at the base.  A hardwood tree was also snapped in half.  The tornado had estimated winds to around 100 mph.  The tornado continued into Will County at 1:01 PM CST.

Thunderstorm Wind in OGLE, ILLINOIS
From 17-NOV-13 12:37:00 to 17-NOV-13 12:37:00 (CST-6)
Location: ROCHELLE MUNI ARPT
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Hail in WINNEBAGO, ILLINOIS
From 17-NOV-13 10:30:00 to 17-NOV-13 10:32:00 (CST-6)
Location: ROSCOE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in LEE, ILLINOIS
From 17-NOV-13 12:36:00 to 17-NOV-13 12:36:00 (CST-6)
Location: STEWARD
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Two older 8 to 10 inch diameter trees were blown down.

Thunderstorm Wind in KANKAKEE, ILLINOIS
From 17-NOV-13 12:38:00 to 17-NOV-13 12:38:00 (CST-6)
Location: DICKEYS
Magnitude: 70.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Storm Chaser

The roof of a barn was torn off on the south side of 7000S between 8000W and 9000W/  Debris was thrown about half a mile to the northeast.  A power pole was snapped at the base near the barn.

Hail in COOK, ILLINOIS
From 17-NOV-13 12:45:00 to 17-NOV-13 12:47:00 (CST-6)
Location: BRIDGEVIEW
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Thunderstorm Wind in DE KALB, ILLINOIS
From 17-NOV-13 12:50:00 to 17-NOV-13 12:50:00 (CST-6)
Location: DE KALB
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A large tree was blown down onto power lines in the northwest side of Dekalb.  Power lines were blown down near Route 23 and Gurler Road.

Hail in LA SALLE, ILLINOIS
From 17-NOV-13 10:41:00 to 17-NOV-13 10:47:00 (CST-6)
Location: LA SALLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Penny to quarter size hail was reported in La Salle.

Thunderstorm Wind in LA SALLE, ILLINOIS
From 17-NOV-13 10:55:00 to 17-NOV-13 10:55:00 (CST-6)
Location: PERU
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Hail in LA SALLE, ILLINOIS
From 17-NOV-13 11:11:00 to 17-NOV-13 11:13:00 (CST-6)
Location: OGLESBY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in KANKAKEE, ILLINOIS
From 17-NOV-13 12:56:00 to 17-NOV-13 12:56:00 (CST-6)
Location: GRANT PARK
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Barn doors were blown in and a few power poles were blown down.

Hail in WILL, ILLINOIS
From 17-NOV-13 12:45:00 to 17-NOV-13 12:47:00 (CST-6)
Location: INGALLS PARK
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Golf ball size hail was reported near Route 30 and Gouger Road.

Thunderstorm Wind in KANKAKEE, ILLINOIS
From 17-NOV-13 12:51:00 to 17-NOV-13 12:51:00 (CST-6)
Location: ST GEORGE
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Between 10 and 20 power poles were snapped or blown down along 4000N between 6000E and 8000E.

Thunderstorm Wind in COOK, ILLINOIS
From 17-NOV-13 12:55:00 to 17-NOV-13 12:55:00 (CST-6)
Location: ENGLEWOOD
Magnitude: 60.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Tornado in IROQUOIS, ILLINOIS
From 17-NOV-13 13:19:00 to 17-NOV-13 13:23:00 (CST-6)
Location: WELLINGTON
Tornado F-scale: EF0
Property damage: 20.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Four farms were impacted with several large trees down or snapped.  One outbuilding had its roof torn off.  Maximum winds were estimated to 80 mph.

Flood in COOK, ILLINOIS
From 17-NOV-13 12:58:00 to 17-NOV-13 14:00:00 (CST-6)
Location: EVANSTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The 500 block of Sheridan Road in Evanston was flooded with 6 to 8 inches of water.

Thunderstorm Wind in KANE, ILLINOIS
From 17-NOV-13 13:00:00 to 17-NOV-13 13:00:00 (CST-6)
Location: ELBURN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several limbs up to 8 inches in diameter were blown down near Route 47 and Keslinger Road.

Thunderstorm Wind in KANKAKEE, ILLINOIS
From 17-NOV-13 12:46:00 to 17-NOV-13 12:46:00 (CST-6)
Location: KANKAKEE
Magnitude: 50.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A tree fell onto a house on Eagle Street.

Hail in OGLE, ILLINOIS
From 17-NOV-13 11:20:00 to 17-NOV-13 11:23:00 (CST-6)
Location: DAVIS JCT
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter to golfball size hail was reported.

Thunderstorm Wind in KENDALL, ILLINOIS
From 17-NOV-13 11:20:00 to 17-NOV-13 11:20:00 (CST-6)
Location: BRISTOL STATION
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in DE KALB, ILLINOIS
From 17-NOV-13 12:50:00 to 17-NOV-13 12:58:00 (CST-6)
Location: HART
Magnitude: 52.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Two older trees were blown down on the north side of the Oak Club of Genoa Golf Course and many trees were uprooted.  In Genoa, house siding was damaged by the winds.  A 100 year old oak tree cracked at the base and landed on a neighbors garage.

Thunderstorm Wind in DU PAGE, ILLINOIS
From 17-NOV-13 13:11:00 to 17-NOV-13 13:11:00 (CST-6)
Location: (DPA)DUPAGE CO ARPT
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in KANKAKEE, ILLINOIS
From 17-NOV-13 12:42:00 to 17-NOV-13 12:42:00 (CST-6)
Location: BONFIELD
Magnitude: 65.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Public

A home was damaged when strong winds tore off a large section of a roof.  A power pole was also blown down.

Thunderstorm Wind in KANE, ILLINOIS
From 17-NOV-13 11:28:00 to 17-NOV-13 11:28:00 (CST-6)
Location: MONTGOMERY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Winds to 60 mph were estimated near the intersection of Orchard Road and Galena Road.

Thunderstorm Wind in OGLE, ILLINOIS
From 17-NOV-13 12:35:00 to 17-NOV-13 12:35:00 (CST-6)
Location: ROCHELLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Two semi-trucks were overturned near the I-39 and I-88 interchange.

Tornado in WILL, ILLINOIS
From 17-NOV-13 13:01:00 to 17-NOV-13 13:02:00 (CST-6)
Location: EAGLE LAKE
Tornado F-scale: EF1
Property damage: 100.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is a continuation of a tornado that formed in Kankakee County at 1:00 PM CST.  The tornado moved northeast into Will County just west of N 17480 E Road.  A large barn sustained significant damage to its roof and outer walls.  Two adjacent metal outbuildings also had partial roof loss.   Several softwood trees were snapped at the base or half way up with debris lofted about a thousand feet.  A 400 lb tractor blade was moved about 60 feet while a grain pipe that had been riveted to the silo was ripped away.  Minor tree damage was noted along E Delite Inn Road as well as minor damage to small barns and outbuildings.  The tornado had estimated winds to around 100 mph.

Hail in OGLE, ILLINOIS
From 17-NOV-13 11:09:00 to 17-NOV-13 11:11:00 (CST-6)
Location: STILLMAN VLY
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tornado in WILL, ILLINOIS
From 17-NOV-13 12:26:00 to 17-NOV-13 12:33:00 (CST-6)
Location: BRAIDWOOD
Tornado F-scale: EF2
Property damage: 2.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is a continuation of a tornado that began at 12:22 PM CST in Grundy County. The tornado moved into  Will County on N Will Road just south of State Route 113.  There was considerable damage to businesses on State Route 113 between N Will Road and I-55.  An RV dealership had numerous vehicles overturned and damaged.  A two story structure lost its roof and had portions of its walls ripped off.  A model home was completely removed from its foundation on the north side of State Route 113.  A manufactured building had its roof ripped off with all the walls collapsed. Widespread tree damage was observed along the west side of I-55 where the tornado almost tracked parallel to as it weakened.  The tornado crossed I-55 near Widows Road where several hardwood trees were uprooted.  The tornado tracked into the Midewin Tallgrass Prairie where it damaged several metal structures just west of Route 53.  The tornado lifted just east of Route 53.  Maximum wind speeds were estimated to be up to 125 mph.