An upper level shortwave moved east through the region, triggering showers and thunderstorms across the forecast area. There were numerous reports of damaging winds and a few reports of flash flooding.

Thunderstorm Wind in OSAGE, MISSOURI
From 09-AUG-15 16:45:00 to 09-AUG-15 16:45:00 (CST-6)
Location: LINN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds blew down several power lines around town.

Flash Flood in WASHINGTON, MISSOURI
From 10-AUG-15 00:30:00 to 10-AUG-15 05:54:00 (CST-6)
Location: COURTOIS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Up to five inches of rain fell in a short amount of time causing flash flooding. Numerous roads were flooded. Highway C, three miles east northeast of Courtois, was closed both ways due to Cub Creek well out of its banks.

Thunderstorm Wind in GASCONADE, MISSOURI
From 09-AUG-15 17:15:00 to 09-AUG-15 17:17:00 (CST-6)
Location: OWENSVILLE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds blew down several large trees around town.

Thunderstorm Wind in FRANKLIN, MISSOURI
From 09-AUG-15 17:40:00 to 09-AUG-15 18:00:00 (CST-6)
Location: LESLIE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds blew down numerous trees and tree limbs across Franklin County. North of Leslie, a large tree was blown down across Route C.  In St. Clair, a road sign was blown down along I-44 and a large tree was blown down near the intersection of Highway 30 and Route PP.

Thunderstorm Wind in CRAWFORD, MISSOURI
From 09-AUG-15 17:38:00 to 09-AUG-15 17:50:00 (CST-6)
Location: JAKE PRAIRIE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A wide swath of wind damage extended across northern Crawford County, mainly trees and tree limbs.  At the intersection of Highways F and EE, a large tree was blown down. Several large trees were blown down onto Highway WW, southwest of Sullivan. In Cuba, several large trees were blown down.

Thunderstorm Wind in WASHINGTON, MISSOURI
From 09-AUG-15 18:12:00 to 09-AUG-15 18:15:00 (CST-6)
Location: RICHWOODS
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Thunderstorm winds blew down several power lines in Richwoods. Also, winds blew down a large tree on Kingston Road, just west of intersection with Highway 47.

Thunderstorm Wind in JEFFERSON, MISSOURI
From 09-AUG-15 18:23:00 to 09-AUG-15 18:35:00 (CST-6)
Location: DITTMER
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Thunderstorm winds blew down numerous large trees and tree limbs across Jefferson County. Some of the reports came from Dittmer, Cedar Hill, De Soto, Hillsboro, and Festus.

Thunderstorm Wind in ST. FRANCOIS, MISSOURI
From 09-AUG-15 18:55:00 to 09-AUG-15 18:55:00 (CST-6)
Location: FARMINGTON ARPT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Thunderstorm winds blew down a couple of power lines at the intersection of Highway H and Copenhagen Road.

Flash Flood in ST. FRANCOIS, MISSOURI
From 09-AUG-15 22:45:00 to 10-AUG-15 03:30:00 (CST-6)
Location: LEADWOOD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Up to five inches of rain fell in a short amount of time causing flash flooding.  Numerous roads were flooded including St. Joe Drive near Lewis Street in Park Hills. A water rescue had to be performed on Woodlawn Drive in Leadington due to a vehicle in flood waters.