Low pressure tracked from near Kansas City on the morning of July 15th to southern Lake Michigan by midnight on July 16th.  The low interacted with an unstable and very moist environment to produce a Mesoscale Convective System (MCS) over eastern Kansas into Missouri, which then pushed into west-central Illinois by the mid to late morning of July 15th.  Several rounds of convection moved across the Illinois River Valley through the afternoon, producing heavy rain and isolated wind damage.  The heaviest rainfall of 5 to 7 inches was focused across Tazewell, Woodford, and far eastern Peoria counties where significant flash flooding occurred.  In addition, 5 weak tornadoes touched down...including 2 in Tazewell County, 1 in McLean County, 1 in Morgan County, and 1 in Montgomery County which then crossed into southern Sangamon County.  Minor damage was reported with some of the tornadoes: however, no injuries or deaths occurred.

Flash Flood in TAZEWELL, ILLINOIS
From 15-JUL-20 14:09:00 to 15-JUL-20 20:00:00 (CST-6)
Location: POWERTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Two inches of rain fell in about an hour, resulting in numerous flooded streets across Pekin.  Due to additional rainfall, water continued to rise through the afternoon and early evening with up to one foot of water reported on many roadways.

Flash Flood in TAZEWELL, ILLINOIS
From 15-JUL-20 16:45:00 to 15-JUL-20 20:00:00 (CST-6)
Location: MORTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Numerous roads were flooded with up to one foot of water in Morton.

Flash Flood in TAZEWELL, ILLINOIS
From 15-JUL-20 16:45:00 to 15-JUL-20 20:00:00 (CST-6)
Location: TRAIL PARK GARDENS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Numerous roads were flooded with up to 1 foot of water in East Peoria.

Flash Flood in WOODFORD, ILLINOIS
From 15-JUL-20 17:30:00 to 15-JUL-20 20:00:00 (CST-6)
Location: EDGEWOOD HILLS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rainfall of 5 to 7 inches produced widespread flash flooding across Woodford County.  Most roads were flooded in the communities of Roanoke, Panola, Eureka, Congerville, Germantown Hills, and Secor.

Flash Flood in PEORIA, ILLINOIS
From 15-JUL-20 16:45:00 to 15-JUL-20 20:00:00 (CST-6)
Location: OAKWOOD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Numerous streets were flooded and impassable in Peoria.  Water rescues were performed for some motorists.

Thunderstorm Wind in TAZEWELL, ILLINOIS
From 15-JUL-20 13:35:00 to 15-JUL-20 13:40:00 (CST-6)
Location: MORTON
Magnitude: 52.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Fencing and numerous trees were blown down in Morton.

Tornado in MORGAN, ILLINOIS
From 15-JUL-20 15:28:00 to 15-JUL-20 15:30:00 (CST-6)
Location: ROHRER
Tornado F-scale: EF0
Property damage: 10.00K
Crop damage: 20.00K
Reported by: NWS Storm Survey

A tornado touched down 3.5 miles north-northwest of Waverly at 4:28PM CDT.  The tornado tracked north-northeastward and crossed into Sangamon County 4.5 miles north of Waverly at 4:30 PM CDT.  Minor crop and tree damage was reported.

Flood in WOODFORD, ILLINOIS
From 15-JUL-20 20:00:00 to 16-JUL-20 08:00:00 (CST-6)
Location: ROANOKE
Flood cause: Heavy Rain
Property damage: 10.00M
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rainfall of 5 to 7 inches brought widespread flash flooding to much of Woodford County, including the city of Roanoke, during the afternoon of July 15th.  Once the rain ended, the water continued to rise and cause significant issues in Roanoke through the morning of July 16th.  71 homes and 15 businesses were flooded, including 10 homes and 5 businesses with major flooding.  Several basement walls and foundations collapsed within the structures impacted by major flooding.  10 people were rescued by boat due to the high water.  In addition, Route 116 was closed in and just east of Roanoke.

Tornado in TAZEWELL, ILLINOIS
From 15-JUL-20 12:37:00 to 15-JUL-20 12:38:00 (CST-6)
Location: GREEN VLY
Tornado F-scale: EFU
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado briefly touched down in a field 2 miles northwest of Green Valley at 1:37 PM CDT.  The tornado tracked northward and quickly dissipated at 1:38PM CDT.  No damage was reported.

Tornado in SANGAMON, ILLINOIS
From 15-JUL-20 15:30:00 to 15-JUL-20 15:37:00 (CST-6)
Location: PROUTY
Tornado F-scale: EF0
Property damage: 10.00K
Crop damage: 50.00K
Reported by: NWS Storm Survey

This tornado is a continuation of the tornado that touched down in Morgan County at 4:28 PM CDT.  It crossed from Morgan County into Sangamon County 5.6 miles southwest of New Berlin at 4:30 PM CDT, then tracked north-northeastward and dissipated 2.5 miles southwest of New Berlin at 4:37 PM CDT.  Minor crop and tree damage was reported.

Tornado in SANGAMON, ILLINOIS
From 15-JUL-20 16:25:00 to 15-JUL-20 16:26:00 (CST-6)
Location: DIVERNON
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 5.00K
Reported by: NWS Storm Survey

This is a continuation of a tornado that touched down in the National Weather Service St. Louis County Warning Area (CWA) in Montgomery County at 5:18 PM CDT.  The tornado crossed into the National Weather Service Central Illinois CWA in far southern Sangamon County at 5:25 PM CDT.  Damage occurred to approximately 15 acres of a cornfield before the tornado dissipated 2.7 miles south of Divernon at 5:26 PM CDT.

Tornado in TAZEWELL, ILLINOIS
From 15-JUL-20 12:45:00 to 15-JUL-20 12:46:00 (CST-6)
Location: SOUTH PEKIN
Tornado F-scale: EFU
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado touched down in a field 1 mile north of South Pekin at 1:45 PM CDT.  The tornado tracked northward and quickly dissipated at 1:46 PM CDT.  No damage was reported.

Tornado in MCLEAN, ILLINOIS
From 15-JUL-20 15:04:00 to 15-JUL-20 15:05:00 (CST-6)
Location: GRIDLEY
Tornado F-scale: EFU
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado touched down in a field 1.6 miles southeast of Gridley at 4:04 PM CDT.  The tornado tracked northward and quickly dissipated at 4:05 PM CDT.  No damage was reported.