A cold front moved into the region on the 26th and meandered across the region through the 31st before an unseasonably strong upper level low pressure system moved east of the region. A very moist airmass and slow movement of the upper level system led to periods of very heavy rainfall each day. The most notable heavy rain event occurred across St. Clair County between Osceola and Lowry City. Over 7 inches of rain fell in a period of a few hours during the early morning of the 31st and led to flash flooding which washed out several roads and bridges and shut down the south bound lane of Highway 13. One public observer from Osceola measured over 11 inches of rain from 3 AM to 9 AM.

Flash Flood in MORGAN, MISSOURI
From 30-JUL-20 18:30:00 to 31-JUL-20 00:07:00 (CST-6)
Location: VERSAILLES
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

Several city streets were reported as flooded and impassable along Highway 52 at Newton and DeKalb Streets.

Flash Flood in ST. CLAIR, MISSOURI
From 31-JUL-20 04:50:00 to 31-JUL-20 14:15:00 (CST-6)
Location: LOWRY CITY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

State Highways A and C were closed along Highway 13 due to high water.

Flash Flood in ST. CLAIR, MISSOURI
From 31-JUL-20 07:00:00 to 31-JUL-20 14:15:00 (CST-6)
Location: CHALK LEVEL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

Several Roads and low water crossing were flooded and impassable between Lowery City and Osceola due to heavy rain and flood waters. These included Highway D and 175th Road South of Highway B.

Flash Flood in ST. CLAIR, MISSOURI
From 31-JUL-20 07:15:00 to 31-JUL-20 14:15:00 (CST-6)
Location: LOWRY CITY
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: State Official

A low water bridge was washed out on Road 401 just south of Highway C.

Flash Flood in ST. CLAIR, MISSOURI
From 31-JUL-20 07:50:00 to 31-JUL-20 14:15:00 (CST-6)
Location: OSCEOLA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

County Road 175 at Highway B was closed due to high water on Turkey Creek at the low water crossing.

Flash Flood in ST. CLAIR, MISSOURI
From 31-JUL-20 08:30:00 to 31-JUL-20 14:15:00 (CST-6)
Location: OHIO
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Department of Highways

A culvert was washed out on Route F between Highways A and 52.

Flash Flood in HICKORY, MISSOURI
From 31-JUL-20 11:38:00 to 31-JUL-20 15:03:00 (CST-6)
Location: PRESTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Route D northbound was closed due to high water.

Flash Flood in HICKORY, MISSOURI
From 31-JUL-20 11:40:00 to 31-JUL-20 15:03:00 (CST-6)
Location: HERMITAGE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Route U was closed due to flooding at Mill Creek.

Flash Flood in HICKORY, MISSOURI
From 31-JUL-20 12:35:00 to 31-JUL-20 15:03:00 (CST-6)
Location: JORDAN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Route P was closed due to flooding at Starks Creek.

Flood in BENTON, MISSOURI
From 30-JUL-20 08:00:00 to 30-JUL-20 16:00:00 (CST-6)
Location: ZORA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A foot of fast flowing water was reported over Highway WW at Big Buffalo Creek.

Flood in DALLAS, MISSOURI
From 31-JUL-20 13:10:00 to 31-JUL-20 21:00:00 (CST-6)
Location: BUFFALO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Minor street flooding was reported in town as 1.64 inches of rain fall over a nearly 4 hour period.

Heavy Rain in BENTON, MISSOURI
From 30-JUL-20 07:03:00 to 31-JUL-20 07:03:00 (CST-6)
Location: LINCOLN
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public reported measuring 4.40 inches of rain over 24 hours.

Heavy Rain in CEDAR, MISSOURI
From 30-JUL-20 11:30:00 to 31-JUL-20 11:30:00 (CST-6)
Location: MASTERS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The Mesonet station EW6435 near Fair PLay reported 3.38 inches of rainfall.

Heavy Rain in WRIGHT, MISSOURI
From 31-JUL-20 13:00:00 to 31-JUL-20 13:30:00 (CST-6)
Location: FUSON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public reported measuring 2.00 inches of rain in a 30 minute span.

Heavy Rain in SHANNON, MISSOURI
From 30-JUL-20 19:00:00 to 31-JUL-20 19:35:00 (CST-6)
Location: BANKER CAVE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The Mesonet station CRRM7 recorded a 24 hour rainfall of 6.10 inches.

Heavy Rain in ST. CLAIR, MISSOURI
From 31-JUL-20 00:00:00 to 31-JUL-20 04:42:00 (CST-6)
Location: LOWRY CITY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Emergency Manager reported measuring 6.01 inches of rain over a 4 hour and 45 minute period. The=is resulted in flooding near the city.

Heavy Rain in ST. CLAIR, MISSOURI
From 30-JUL-20 08:00:00 to 31-JUL-20 09:15:00 (CST-6)
Location: OYER
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

The CoCoRAHS station MO-SR-8 El Dorado Springs Reported 2.18 inches of rainfall.

Heavy Rain in HICKORY, MISSOURI
From 30-JUL-20 06:00:00 to 31-JUL-20 17:09:00 (CST-6)
Location: CROSS TIMBERS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Heavy rainfall was reported from several locations across Hickory County. Near Galmey, an amateur radio operator reported 4.40 inches of rain falling between 6 am and noon. The Co-op observer at Pomme De Terre reported 2.20 inches of rainfall and a weather watcher measured a 24 hour rainfall total of 5.52 inches near Cross Timers.

Heavy Rain in MORGAN, MISSOURI
From 30-JUL-20 06:00:00 to 31-JUL-20 06:00:00 (CST-6)
Location: STOVER
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Numerous locations across Morgan County received more than 2 inches of rain over a 24 hour period. The heaviest rains fell in the Stover and Versailles areas with between 2.00 and 4.51 inches of rainfall measured by Co-op observers, Mesonet stations and the public.