Waves of low pressure tracking along a nearly stationary frontal boundary draped across central Illinois triggered strong to severe thunderstorms from the evening of June 18th through the early morning of June 19th.  One of the storms produced an EF-1 tornado east of Abingdon in Knox County.  The tornado flattened crops and caused significant damage to a few outbuildings.  South of the tornado track, estimated 70 to 90 mph straight line winds caused damage in London Mills, Fairview, and Canton in northern Fulton County.  As the storms continued eastward, numerous reports of wind damage were received across southern Peoria County into portions of Tazewell and McLean counties.

Hail in SANGAMON, ILLINOIS
From 18-JUN-21 19:54:00 to 18-JUN-21 19:59:00 (CST-6)
Location: GRANDVIEW
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Hail in TAZEWELL, ILLINOIS
From 18-JUN-21 22:40:00 to 18-JUN-21 22:45:00 (CST-6)
Location: GROVELAND
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in FULTON, ILLINOIS
From 18-JUN-21 23:10:00 to 18-JUN-21 23:15:00 (CST-6)
Location: CANTON
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MACON, ILLINOIS
From 19-JUN-21 02:31:00 to 19-JUN-21 02:36:00 (CST-6)
Location: MT ZION
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in TAZEWELL, ILLINOIS
From 19-JUN-21 00:07:00 to 19-JUN-21 00:12:00 (CST-6)
Location: MORTON
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in TAZEWELL, ILLINOIS
From 18-JUN-21 22:40:00 to 18-JUN-21 22:45:00 (CST-6)
Location: MORTON
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm Wind in TAZEWELL, ILLINOIS
From 18-JUN-21 23:49:00 to 18-JUN-21 23:54:00 (CST-6)
Location: WINKEL
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

An 8-inch diameter tree was blown down near the intersection of Wagonseller Road and Illinois Route 29.

Thunderstorm Wind in VERMILION, ILLINOIS
From 19-JUN-21 02:16:00 to 19-JUN-21 02:21:00 (CST-6)
Location: RIDGE FARM
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tree was blown down.

Thunderstorm Wind in CHAMPAIGN, ILLINOIS
From 19-JUN-21 02:38:00 to 19-JUN-21 02:43:00 (CST-6)
Location: SIDNEY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A large tree was blown down.

Thunderstorm Wind in SANGAMON, ILLINOIS
From 19-JUN-21 05:53:00 to 19-JUN-21 05:58:00 (CST-6)
Location: GRANDVIEW
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A 6-inch diameter tree limb was snapped.

Thunderstorm Wind in LAWRENCE, ILLINOIS
From 19-JUN-21 04:48:00 to 19-JUN-21 04:53:00 (CST-6)
Location: BRIDGEPORT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Several trees were blown over or snapped.

Thunderstorm Wind in KNOX, ILLINOIS
From 18-JUN-21 23:00:00 to 18-JUN-21 23:05:00 (CST-6)
Location: RAPATEE
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Several trees were snapped.

Thunderstorm Wind in FULTON, ILLINOIS
From 18-JUN-21 23:05:00 to 18-JUN-21 23:10:00 (CST-6)
Location: FAIRVIEW
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Numerous large tree branches were broken.

Thunderstorm Wind in FULTON, ILLINOIS
From 18-JUN-21 23:11:00 to 18-JUN-21 23:16:00 (CST-6)
Location: BRERETON
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A large tree was snapped.

Tornado in KNOX, ILLINOIS
From 18-JUN-21 10:50:00 to 18-JUN-21 11:05:00 (CST-6)
Location: HERMON
Tornado F-scale: EF1
Property damage: 150.00K
Crop damage: 100.00K
Reported by: NWS Storm Survey

A tornado touched down 3.5 miles east-southeast of Abingdon at 11:50 PM CDT.  The tornado tracked southeastward, flattening crops and knocking down numerous trees along its path.  Significant damage occurred to several farm outbuildings along County Road 850 East north of County Highway 39, with debris being strewn southeastward for over a half mile.  The tornado lifted about 0.5 miles west of Rapatee just north of the Fulton County line at 12:05 AM CDT.

Thunderstorm Wind in FULTON, ILLINOIS
From 18-JUN-21 22:40:00 to 18-JUN-21 22:45:00 (CST-6)
Location: AVON
Magnitude: 78.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several trees were snapped and a barn was heavily damaged.

Thunderstorm Wind in FULTON, ILLINOIS
From 18-JUN-21 23:06:00 to 18-JUN-21 23:11:00 (CST-6)
Location: NORRIS
Magnitude: 70.00 EG
Property damage: 70.00K
Crop damage: 0.00K
Reported by: Public

Several power poles were broken off.

Thunderstorm Wind in KNOX, ILLINOIS
From 18-JUN-21 22:40:00 to 18-JUN-21 22:45:00 (CST-6)
Location: ABINGDON
Magnitude: 70.00 EG
Property damage: 75.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous trees and powerlines were damaged in Abingdon, causing a power outage in town.

Thunderstorm Wind in KNOX, ILLINOIS
From 18-JUN-21 22:50:00 to 18-JUN-21 22:55:00 (CST-6)
Location: ABINGDON
Magnitude: 70.00 EG
Property damage: 60.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several trees were snapped and power lines were blown down along Route 41.

Thunderstorm Wind in FULTON, ILLINOIS
From 18-JUN-21 22:50:00 to 18-JUN-21 22:55:00 (CST-6)
Location: LONDON MILLS
Magnitude: 70.00 EG
Property damage: 150.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous trees were snapped, power lines were blown down, and a couple grain elevators were severely damaged.

Thunderstorm Wind in FULTON, ILLINOIS
From 18-JUN-21 23:10:00 to 18-JUN-21 23:15:00 (CST-6)
Location: CANTON INGERSOLL ARP
Magnitude: 70.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Numerous trees and power lines were blown down along Route 9 west of Canton.

Thunderstorm Wind in FULTON, ILLINOIS
From 18-JUN-21 23:10:00 to 18-JUN-21 23:15:00 (CST-6)
Location: CANTON
Magnitude: 70.00 EG
Property damage: 60.00K
Crop damage: 0.00K
Reported by: Public

Roof and siding damage occurred due to strong thunderstorm winds.

Thunderstorm Wind in FULTON, ILLINOIS
From 18-JUN-21 23:10:00 to 18-JUN-21 23:15:00 (CST-6)
Location: CANTON
Magnitude: 70.00 EG
Property damage: 60.00K
Crop damage: 0.00K
Reported by: Public

Numerous trees were blown down on the north side of Canton.

Thunderstorm Wind in FULTON, ILLINOIS
From 18-JUN-21 22:52:00 to 18-JUN-21 22:57:00 (CST-6)
Location: LONDON MILLS
Magnitude: 70.00 EG
Property damage: 90.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Farm equipment buildings were damaged and powerlines were blown into a field.

Thunderstorm Wind in KNOX, ILLINOIS
From 18-JUN-21 22:59:00 to 18-JUN-21 23:04:00 (CST-6)
Location: LONDON MILLS
Magnitude: 70.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Several trees were snapped and powerlines were blown down.

Thunderstorm Wind in FULTON, ILLINOIS
From 18-JUN-21 23:00:00 to 18-JUN-21 23:05:00 (CST-6)
Location: FAIRVIEW
Magnitude: 70.00 EG
Property damage: 60.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Numerous trees were blown down.

Thunderstorm Wind in TAZEWELL, ILLINOIS
From 18-JUN-21 23:50:00 to 18-JUN-21 23:55:00 (CST-6)
Location: SOUTH PEKIN
Magnitude: 61.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Numerous trees were blown down.

Thunderstorm Wind in TAZEWELL, ILLINOIS
From 18-JUN-21 23:58:00 to 19-JUN-21 00:03:00 (CST-6)
Location: PEKIN
Magnitude: 61.00 EG
Property damage: 55.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Numerous trees and tree branches were blown down, including a large tree that fell onto a car.

Thunderstorm Wind in TAZEWELL, ILLINOIS
From 19-JUN-21 00:11:00 to 19-JUN-21 00:16:00 (CST-6)
Location: SOUTH PEKIN
Magnitude: 61.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Public

Tree branches were blown down and shingles were blown off a roof.

Thunderstorm Wind in DOUGLAS, ILLINOIS
From 19-JUN-21 02:52:00 to 19-JUN-21 02:57:00 (CST-6)
Location: NEWMAN
Magnitude: 52.00 EG
Property damage: 65.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tree was blown onto a roof in the 600 block of West Green Street in Newman.  Power poles were snapped and powerlines were blown down at Gabe Street and North Howard Street.

Thunderstorm Wind in EDGAR, ILLINOIS
From 19-JUN-21 03:10:00 to 19-JUN-21 03:15:00 (CST-6)
Location: CHRISMAN
Magnitude: 52.00 EG
Property damage: 110.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Multiple tree branches greater than 12 inches in diameter were blown down throughout Chrisman.  Some of the falling branches caused structural damage to homes.

Thunderstorm Wind in FULTON, ILLINOIS
From 19-JUN-21 11:03:00 to 19-JUN-21 11:08:00 (CST-6)
Location: MIDDLEGROVE
Magnitude: 70.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The western wall of a farm outbuilding was blown out.