Strong to severe thunderstorms moved across parts of northern Illinois during the afternoon of June 26th producing wind damage, flooding and a few tornadoes.

Tornado in WILL, ILLINOIS
From 26-JUN-18 17:54:00 to 26-JUN-18 17:59:00 (CST-6)
Location: MANHATTAN
Tornado F-scale: EF1
Property damage: 30.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Damage was first observed at a farm along Bruns Road.  Two large trees lost limbs or portions of their trunk and numerous smaller branches were broken.  The resident reported seeing a mass of wind and clouds upstream from this location but not a funnel.  There was no damage observed in the crops upstream of the location, at least from what could be seen from the ground.  There was debris in the field north of the farm, but no other damage was visible until the tornado entered Manhattan near the park.  Damage in Manhattan consisted of numerous snapped branches of various sizes and at least two large, over one foot diameter, trunks snapped.  Damage in the park was about 100 yards wide.  Several buildings in town received just minor damage, but the post office lost a portion of its roof covering and a building next door had broken windows as well as shingle and roof damage.  The tornado dissipated near Prairie Street as it exited downtown.  No damage was observed in the tree line north of Prairie Street.

Tornado in KANE, ILLINOIS
From 26-JUN-18 16:28:00 to 26-JUN-18 16:28:00 (CST-6)
Location: TROXEL
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A video showed a brief surface touchdown that kicked up some water in a field, southwest of the intersection of Perry and Miner Roads.  This tornado only lasted a few seconds and produced no damage.

Funnel Cloud in KANE, ILLINOIS
From 26-JUN-18 16:27:00 to 26-JUN-18 16:33:00 (CST-6)
Location: TROXEL
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A funnel cloud was observed by multiple spotters and chasers roughly halfway from the cloud to the ground but there was no confirmed touch down.

Thunderstorm Wind in BOONE, ILLINOIS
From 26-JUN-18 14:19:00 to 26-JUN-18 14:19:00 (CST-6)
Location: BLAINE
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees were blown down at Capron and Blaine Roads.

Thunderstorm Wind in BOONE, ILLINOIS
From 26-JUN-18 14:10:00 to 26-JUN-18 14:10:00 (CST-6)
Location: CAPRON
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tree was blown down onto power lines.

Thunderstorm Wind in KANE, ILLINOIS
From 26-JUN-18 14:14:00 to 26-JUN-18 14:14:00 (CST-6)
Location: STARKS
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A large tree was blown down partially blocking Route 47 approximately 1.5 miles south of Route 20.  Other small tree limbs were blown down.

Thunderstorm Wind in WINNEBAGO, ILLINOIS
From 26-JUN-18 13:02:00 to 26-JUN-18 13:02:00 (CST-6)
Location: EAST ROCKFORD
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A tree was uprooted in the 1800 block of South 8th Street causing damage to power lines and an adjacent house.

Heavy Rain in LAKE, ILLINOIS
From 26-JUN-18 15:30:00 to 26-JUN-18 16:30:00 (CST-6)
Location: GURNEE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Rainfall of 1.93 inches was reported in one hour.

Flash Flood in KANE, ILLINOIS
From 26-JUN-18 17:22:00 to 26-JUN-18 20:00:00 (CST-6)
Location: STARKS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Six to seven inches of flowing water was reported across Route 47 at Plank Road.  Impassible standing water was reported on portions of Route 47, west of Pingree Grove.  A nearby rainfall of 2.83 inches was reported 0.7 miles west of Sleepy Hollow.

Flash Flood in KANE, ILLINOIS
From 26-JUN-18 18:32:00 to 26-JUN-18 19:30:00 (CST-6)
Location: HAMPSHIRE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The intersection of Route 72 and State Street was flooded with 12 to 15 inches of water.

Flood in KANE, ILLINOIS
From 26-JUN-18 16:28:00 to 26-JUN-18 19:30:00 (CST-6)
Location: HAMPSHIRE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Roads were flooded due to farm field runoff.

Flood in BOONE, ILLINOIS
From 26-JUN-18 15:31:00 to 26-JUN-18 17:30:00 (CST-6)
Location: CALEDONIA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Approximately 6 inches of standing water was reported on Route 173 east of Wyman School Road.

Tornado in WILL, ILLINOIS
From 26-JUN-18 17:53:00 to 26-JUN-18 17:54:00 (CST-6)
Location: MANHATTAN
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters confirmed a brief tornado touch down approximately 3 miles south southeast of Manhattan.  No damage was reported.

Flood in LAKE, ILLINOIS
From 26-JUN-18 16:26:00 to 26-JUN-18 19:00:00 (CST-6)
Location: LIBERTYVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Numerous local roads had several inches of standing flood water along with some flowing water.  Rainfall of 0.56 inches occurred in a ten minute period from 403 pm CST to 413 pm CST.

Flood in WINNEBAGO, ILLINOIS
From 26-JUN-18 13:30:00 to 26-JUN-18 15:30:00 (CST-6)
Location: ROCKFORD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Six to ten inches of standing water was reported at the intersection of Charles and 9th Streets.

Flash Flood in WINNEBAGO, ILLINOIS
From 26-JUN-18 16:30:00 to 26-JUN-18 17:30:00 (CST-6)
Location: RCKFRD COTTONWOOD AR
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Portions of North Central Avenue were impassible due to flood water.

Heavy Rain in WINNEBAGO, ILLINOIS
From 26-JUN-18 13:00:00 to 26-JUN-18 14:00:00 (CST-6)
Location: ROSCOE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Rainfall of 1.50 inches was measured in one hour.

Flash Flood in LAKE, ILLINOIS
From 26-JUN-18 16:46:00 to 26-JUN-18 19:30:00 (CST-6)
Location: WILDWOOD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Fast rising flood waters left one driver stranded under a viaduct at Route 45 and Route 137.  About one foot of standing water was reported on Route 137 at the intersection of Midlothian Road.