A maturing mesoscale convective system progressed east-southeastward, producing areas of wind damage. The thunderstorm complex increased in size and accelerated as it evolved. Strongly unstable air and rich moisture ahead of the complex supported its increase in size and intensity. Steep mid-level lapse rates coupled with 20 to 35 knots of mid level flow yielded an increase in damaging winds with the complex. Weak ascent within the southern branch of the jetstream supported the formation of the system. In its wake, temperatures in the 60's in the cold pool kept the movement of the system accelerating east-southeast.

Thunderstorm Wind in BOLLINGER, MISSOURI
From 06-SEP-12 16:10:00 to 06-SEP-12 16:10:00 (CST-6)
Location: MARBLE HILL
Magnitude: 56.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: COOP Observer

Numerous trees were down in and around the city limits.

Thunderstorm Wind in WAYNE, MISSOURI
From 06-SEP-12 15:36:00 to 06-SEP-12 15:42:00 (CST-6)
Location: PATTERSON
Magnitude: 56.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees were blown down in north central Wayne County, including areas along Highway 143 at Sam A. Baker State Park.

Thunderstorm Wind in BOLLINGER, MISSOURI
From 06-SEP-12 16:15:00 to 06-SEP-12 16:15:00 (CST-6)
Location: ZALMA
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: COOP Observer

Several trees were blown down by wind gusts estimated around 60 mph.

Thunderstorm Wind in SCOTT, MISSOURI
From 06-SEP-12 16:42:00 to 06-SEP-12 16:57:00 (CST-6)
Location: ORAN
Magnitude: 52.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Damaging winds raked western Scott County. Several trees were blown down in Oran and Blodgett, including at least one that was over a road. A tree was down on a power line in Blodgett. In Morley, a power line was down on a house, causing a house fire.

Thunderstorm Wind in MISSISSIPPI, MISSOURI
From 06-SEP-12 17:31:00 to 06-SEP-12 17:31:00 (CST-6)
Location: WYATT
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A single-axle truck was blown over on U.S. Highway 60/62.

Hail in SCOTT, MISSOURI
From 06-SEP-12 17:00:00 to 06-SEP-12 17:00:00 (CST-6)
Location: BLODGETT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm Wind in CARTER, MISSOURI
From 06-SEP-12 15:31:00 to 06-SEP-12 15:31:00 (CST-6)
Location: VAN BUREN
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Power lines and tree limbs were blown down.

Thunderstorm Wind in STODDARD, MISSOURI
From 06-SEP-12 16:20:00 to 06-SEP-12 16:20:00 (CST-6)
Location: PAXICO
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several trees were blown down.

Thunderstorm Wind in STODDARD, MISSOURI
From 06-SEP-12 16:30:00 to 06-SEP-12 16:30:00 (CST-6)
Location: BLOOMFIELD
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several trees were blown down.

Thunderstorm Wind in STODDARD, MISSOURI
From 06-SEP-12 16:30:00 to 06-SEP-12 16:30:00 (CST-6)
Location: BELL CITY
Magnitude: 56.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees were blown down.

Thunderstorm Wind in CAPE GIRARDEAU, MISSOURI
From 06-SEP-12 16:50:00 to 06-SEP-12 16:50:00 (CST-6)
Location: CAPE GIRARDEAU
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Newspaper

Trees and power lines were down on a city street.

Thunderstorm Wind in WAYNE, MISSOURI
From 06-SEP-12 15:29:00 to 06-SEP-12 15:36:00 (CST-6)
Location: PIEDMONT MUNI ARPT
Magnitude: 61.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees were blown down in northwestern parts of the county. In particular, trees were down around Highway HH at Clearwater Dam. Tree limbs and whole trees were on roads in the Piedmont area. A car crashed into a downed tree near Piedmont, causing major injuries (indirect).