A slow-moving isolated thunderstorm dropped 1 to 2 inches of rain in a short amount of time across northeast Champaign County during the late afternoon of July 9th, leading to widespread flash flooding in Rantoul.  Meanwhile further west, a line of strong to severe thunderstorms developed along the Mississippi River ahead of an approaching cold front.  These storms pushed into the Illinois River Valley, producing scattered wind damage and flash flooding.  The line weakened as it tracked further eastward across the I-55 corridor later in the evening: however, one cell produced damaging downburst winds in northern Piatt County around midnight.

Flash Flood in CHAMPAIGN, ILLINOIS
From 09-JUL-20 16:15:00 to 09-JUL-20 18:00:00 (CST-6)
Location: RANTOUL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

Numerous roads were covered with water and impassable in Rantoul.  Up to 4 feet of water flowed across some roads.

Thunderstorm Wind in KNOX, ILLINOIS
From 09-JUL-20 19:15:00 to 09-JUL-20 19:20:00 (CST-6)
Location: WILLIAMSFIELD
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A power line was blown onto a road in Williamsfield.

Thunderstorm Wind in FULTON, ILLINOIS
From 09-JUL-20 19:20:00 to 09-JUL-20 19:25:00 (CST-6)
Location: CUBA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A 10-inch diameter tree limb was blown down.

Thunderstorm Wind in PEORIA, ILLINOIS
From 09-JUL-20 20:00:00 to 09-JUL-20 20:05:00 (CST-6)
Location: DUNLAP
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A large tree was blown onto a road.

Thunderstorm Wind in MASON, ILLINOIS
From 09-JUL-20 20:12:00 to 09-JUL-20 20:17:00 (CST-6)
Location: HAVANA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several tree limbs were blown down across Havana.

Flash Flood in MASON, ILLINOIS
From 09-JUL-20 20:16:00 to 09-JUL-20 22:16:00 (CST-6)
Location: HAVANA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Several streets were flooded and barricaded in Havana.

Flash Flood in TAZEWELL, ILLINOIS
From 09-JUL-20 20:25:00 to 09-JUL-20 22:25:00 (CST-6)
Location: PEKIN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Water was flowing across the road near the intersection of Summer Street and Winter Street in Pekin.

Thunderstorm Wind in KNOX, ILLINOIS
From 09-JUL-20 18:55:00 to 09-JUL-20 19:00:00 (CST-6)
Location: ALTONA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 50.00K
Reported by: Trained Spotter

Strong thunderstorm winds damaged crops just east of Altona.

Thunderstorm Wind in FULTON, ILLINOIS
From 09-JUL-20 19:50:00 to 09-JUL-20 19:55:00 (CST-6)
Location: LITTLE AMERICA
Magnitude: 52.00 EG
Property damage: 15.00K
Crop damage: 50.00K
Reported by: Emergency Manager

Strong thunderstorm winds damaged crops and blew trees down southeast of St. David.

Thunderstorm Wind in PIATT, ILLINOIS
From 09-JUL-20 23:06:00 to 09-JUL-20 23:11:00 (CST-6)
Location: MANSFIELD
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 60.00K
Reported by: Broadcast Media

Downburst winds caused crop damage and snapped tree branches just south of Mansfield.

Thunderstorm Wind in PIATT, ILLINOIS
From 09-JUL-20 23:08:00 to 09-JUL-20 23:13:00 (CST-6)
Location: MANSFIELD
Magnitude: 52.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Power poles and power lines were blown down.