Severe thunderstorms produced heavy rain, flash flooding, wind damage and a few tornadoes during the evening hours of June 28th.  A wake low after earlier thunderstorms caused high winds across part of central Illinois including a measured gust to 61 mph at Pontiac Airport (KPNT).

Tornado in BOONE, ILLINOIS
From 28-JUN-17 19:23:00 to 28-JUN-17 19:25:00 (CST-6)
Location: BELVIDERE
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

An EF-1 tornado with maximum winds of 100 mph touched down west of the intersection of Huber and Genoa Roads and lifted east of the intersection of Huber and Fern Hill Roads.  The tornado was on the ground for 1.6 miles.  Damage was mainly to trees with a few homes experiencing property damage.

Tornado in WINNEBAGO, ILLINOIS
From 28-JUN-17 19:14:00 to 28-JUN-17 19:15:00 (CST-6)
Location: CHERRY VALLEY
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

An EF1 tornado with maximum winds of 100 mph touched down near Burton and River Roads and quickly crossed into Boone County, just south of Burton Road.  Damage was mainly to trees with some minor property damage.

Thunderstorm Wind in WINNEBAGO, ILLINOIS
From 28-JUN-17 18:40:00 to 28-JUN-17 18:40:00 (CST-6)
Location: DURAND
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Five trees and numerous tree limbs were blown down.

Thunderstorm Wind in WINNEBAGO, ILLINOIS
From 28-JUN-17 19:00:00 to 28-JUN-17 19:00:00 (CST-6)
Location: WINNEBAGO
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Wind gusts were estimated to be at least 60 mph.

Thunderstorm Wind in LAKE, ILLINOIS
From 28-JUN-17 19:45:00 to 28-JUN-17 19:45:00 (CST-6)
Location: ANTIOCH
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Numerous trees and large tree limbs were blown down, possibly from a concentrated microburst.

Thunderstorm Wind in WINNEBAGO, ILLINOIS
From 28-JUN-17 18:59:00 to 28-JUN-17 19:00:00 (CST-6)
Location: MACHESNEY PARK
Magnitude: 60.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Numerous tree limbs and a one foot diameter tree were blown down.  A cemented flag pole was bent by the wind.  Part of a roof was blown off a house.

Flood in WINNEBAGO, ILLINOIS
From 29-JUN-17 01:30:00 to 29-JUN-17 16:30:00 (CST-6)
Location: SEWARD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flooding continued during the morning and afternoon of June 29th after heavy rain and flash flooding during the evening of June 28th.

Thunderstorm Wind in LAKE, ILLINOIS
From 28-JUN-17 19:46:00 to 28-JUN-17 19:46:00 (CST-6)
Location: PETITE LAKE
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Trees were blown down in the East Loon Lake area.

Flash Flood in WINNEBAGO, ILLINOIS
From 28-JUN-17 19:20:00 to 29-JUN-17 01:30:00 (CST-6)
Location: SEWARD
Flood cause: Heavy Rain
Property damage: 500.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Very heavy rain fell across Winnebago County during the evening hours of June 28th.  Numerous roads were flooded, closed and impassable due to flash flooding.  In Rockford, numerous cars were stranded in flood waters with several water rescues from the stranded vehicles.  Kent Creek was out of its banks.  A parking lot at a pharmacy was flooded and people were unable to leave the building.  Numerous residential roads were flooded and impassable in Loves Park, Machesney Park and Pecatonica.  In Winnebago, 4 to 6 inches of flowing water was reported on roads.  Storm total rainfall totals included 5.69 inches in Loves Park; 5.48 inches at Rockford International Golf Course; 5.21 inches at Winnebago; 5.00 inches at Pecatonica; 4.11 inches at Rockford Airport; 3.80 inches 3 miles ENE of Machesney Park and 3.46 inches 2 miles southeast of Roscoe.

Flash Flood in BOONE, ILLINOIS
From 28-JUN-17 19:25:00 to 29-JUN-17 01:30:00 (CST-6)
Location: HUNTER
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Very heavy rain fell across Boone County during the evening hours of June 28th.  Numerous roads were flooded, closed and impassable due to flash flooding.  Many county roads were also flooded and closed.  Significant flooding was reported on many roads in Belvidere where there were water rescues from stranded vehicles.  Ditches were overflowing onto Genoa Road.  Storm total rainfall reports included 4.95 inches 2 miles northwest of Belvidere and 4.70 inches in Belvidere.

Thunderstorm Wind in WINNEBAGO, ILLINOIS
From 28-JUN-17 19:10:00 to 28-JUN-17 19:10:00 (CST-6)
Location: CAMP GRANT
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tree limbs 8 inches in diameter and power lines were blown down near 11th Street and Sandy Hollow Road.

Flood in BOONE, ILLINOIS
From 29-JUN-17 01:30:00 to 29-JUN-17 16:30:00 (CST-6)
Location: HUNTER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flooding continued during the morning and afternoon of June 29th after heavy rain and flash flooding during the evening of June 28th.

Thunderstorm Wind in DU PAGE, ILLINOIS
From 28-JUN-17 22:40:00 to 28-JUN-17 22:40:00 (CST-6)
Location: GLENDALE HEIGHTS
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Public

Several power lines and a few small trees were blown down.

Funnel Cloud in MCHENRY, ILLINOIS
From 28-JUN-17 19:35:00 to 28-JUN-17 19:35:00 (CST-6)
Location: MARENGO
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Marengo police reported a funnel cloud.

Flash Flood in MCHENRY, ILLINOIS
From 28-JUN-17 21:30:00 to 29-JUN-17 01:30:00 (CST-6)
Location: CHEMUNG
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rain caused flooding across parts of southern McHenry County including flash flooding on Route 23 in Marengo and Algonquin Road in Algonquin.  Storm total rainfall amounts included 3.36 inches 1 mile east southeast of Lake In The Hills; 3.21 inches 1 mile north of Algonquin; 3.17 inches in Cary and 2.68 inches in Crystal Lake.

High Wind in LIVINGSTON, ILLINOIS
From 28-JUN-17 23:55:00 to 28-JUN-17 23:55:00 (CST-6)
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Tornado in BOONE, ILLINOIS
From 28-JUN-17 19:15:00 to 28-JUN-17 19:22:00 (CST-6)
Location: IRENE
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

An EF1 tornado with maximum winds of 100 mph touched down near Burton and River Roads in southeast Winnebago County and quickly crossed into Boone County, just south of Burton Road.  The tornado moved southeast until it reached Bates Road, where it began to move mainly eastward.  Damage was mainly to trees with some minor property damage.  The tornado ended near Bates Road and Pearl Street.