Several clusters of strong to severe thunderstorms developed across central Illinois in advance of a cold front during the afternoon and evening of June 22nd.  Some of the storms produced damaging wind gusts of around 60mph and locally heavy downpours.  Flash flooding was observed across portions of Macon, Christian, Piatt, and Champaign counties.

Thunderstorm Wind in SANGAMON, ILLINOIS
From 22-JUN-20 14:24:00 to 22-JUN-20 14:29:00 (CST-6)
Location: AUBURN
Magnitude: 52.00 EG
Property damage: 11.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tree was blown onto a house.

Thunderstorm Wind in SANGAMON, ILLINOIS
From 22-JUN-20 14:28:00 to 22-JUN-20 14:33:00 (CST-6)
Location: GLENARM
Magnitude: 52.00 EG
Property damage: 21.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Three power poles were snapped.

Thunderstorm Wind in SANGAMON, ILLINOIS
From 22-JUN-20 14:30:00 to 22-JUN-20 14:35:00 (CST-6)
Location: CIMIC
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A semi was blown over on northbound I-55 near Divernon.

Thunderstorm Wind in SANGAMON, ILLINOIS
From 22-JUN-20 14:40:00 to 22-JUN-20 14:45:00 (CST-6)
Location: CHATHAM
Magnitude: 52.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: NWS Employee

Two 1.5 to 2-foot diameter trees were blown down.  One of the trees fell onto a fence.

Thunderstorm Wind in KNOX, ILLINOIS
From 22-JUN-20 15:45:00 to 22-JUN-20 15:50:00 (CST-6)
Location: GALESBURG
Magnitude: 52.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several trees were blown down in Galesburg.

Thunderstorm Wind in KNOX, ILLINOIS
From 22-JUN-20 15:50:00 to 22-JUN-20 15:55:00 (CST-6)
Location: EAST GALESBURG
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several trees were blown down in East Galesburg.

Flash Flood in MACON, ILLINOIS
From 22-JUN-20 16:20:00 to 22-JUN-20 21:15:00 (CST-6)
Location: HARRISTOWN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Water was flowing over numerous roads in and around Harristown.

Flash Flood in CHRISTIAN, ILLINOIS
From 22-JUN-20 17:00:00 to 22-JUN-20 21:15:00 (CST-6)
Location: STONINGTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Water was flowing across a road on the northwest side of Stonington.  The road was barricaded to prevent traffic.

Flash Flood in SHELBY, ILLINOIS
From 22-JUN-20 18:00:00 to 22-JUN-20 20:45:00 (CST-6)
Location: DUVALL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Water was flowing across Route 128 just north of Shelbyville.

Thunderstorm Wind in SANGAMON, ILLINOIS
From 22-JUN-20 14:30:00 to 22-JUN-20 14:35:00 (CST-6)
Location: GLENARM
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Three 12-inch diameter 20-foot long trees were blown down onto a driveway.

Thunderstorm Wind in SANGAMON, ILLINOIS
From 22-JUN-20 14:35:00 to 22-JUN-20 14:40:00 (CST-6)
Location: CHATHAM
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several large tree limbs were blown down onto a road.

Flash Flood in MACON, ILLINOIS
From 22-JUN-20 16:20:00 to 22-JUN-20 21:15:00 (CST-6)
Location: BEARSDALE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A few viaducts were flooded in Decatur.

Flash Flood in PEORIA, ILLINOIS
From 22-JUN-20 17:17:00 to 22-JUN-20 20:30:00 (CST-6)
Location: OAK HILL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Street flooding occurred on Cottonwood and Eden Road northwest of Hanna City.

Flash Flood in PIATT, ILLINOIS
From 22-JUN-20 18:08:00 to 22-JUN-20 20:29:00 (CST-6)
Location: MANSFIELD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Parts of Highway 150 were flooded from Mansfield eastward to the Champaign County border.

Flash Flood in CHAMPAIGN, ILLINOIS
From 22-JUN-20 18:00:00 to 22-JUN-20 20:29:00 (CST-6)
Location: MAHOMET
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Parts of Highway 150 were flooded and barricaded from the Piatt County border eastward to Mahomet.