Thunderstorms once again developed late Friday evening August 19th, 2011, along a boundary of very warm temperatures in the Southern Plains, and cooler temperatures in the Mid-Missouri River valley. A developing cluster of storms over east central Kansas rapidly transitioned into a wind producing MCS as it approached and crossed the Kansas City metro. Measured wind speeds between 60 and 80 mph, raced through the Kansas City metro, causing additional tree and power line damage, leading to power outages.
As this storm system moved eastward it did weaken, but was still able to produce upwards of 50 mph winds, at the Missouri State Fair.

Thunderstorm Wind in PLATTE, MISSOURI
From 20-AUG-11 01:06:00 to 20-AUG-11 01:06:00 (CST-6)
Location: PARKVILLE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees were reported down at 9 Highway and Lake View. Thunderstorm wind gusts were estimated up to 60 mph.

Thunderstorm Wind in PLATTE, MISSOURI
From 20-AUG-11 01:19:00 to 20-AUG-11 01:19:00 (CST-6)
Location: LAKE WAUKOMIS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees were reported down, with thunderstorm wind gusts estimated up to 60 mph.

Thunderstorm Wind in JACKSON, MISSOURI
From 20-AUG-11 01:38:00 to 20-AUG-11 01:38:00 (CST-6)
Location: SPRING BRANCH
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Powerlines were reported down in Independence. Thunderstorm wind gusts were estimated up to 60 mph.

Thunderstorm Wind in PLATTE, MISSOURI
From 20-AUG-11 01:08:00 to 20-AUG-11 01:08:00 (CST-6)
Location: BARRY
Magnitude: 52.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Emergency Manager

A tree was reported knocked down on a house, at 69th and Berkley. Thunderstorm wind gusts were estimated up to 60 mph.

Thunderstorm Wind in PLATTE, MISSOURI
From 20-AUG-11 00:10:00 to 20-AUG-11 00:10:00 (CST-6)
Location: (MCI)KS CITY INTL AR
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The ASOS at the Kansas City International Airport, measured a thunderstorm wind gust to 61 mph.

Thunderstorm Wind in PLATTE, MISSOURI
From 20-AUG-11 00:43:00 to 20-AUG-11 00:43:00 (CST-6)
Location: WESTON
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm wind gusts were estimated up to 75 mph. Several trees and large branches were reported down.

Thunderstorm Wind in PLATTE, MISSOURI
From 20-AUG-11 01:05:00 to 20-AUG-11 01:05:00 (CST-6)
Location: (MCI)KS CITY INTL AR
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The ASOS at the Kansas International Airport, measured a thunderstorm wind gust at 62 mph.

Thunderstorm Wind in CLAY, MISSOURI
From 20-AUG-11 01:21:00 to 20-AUG-11 01:21:00 (CST-6)
Location: NORTH KANSAS CITY
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The ASOS at the downtown Kansas City Airport, measured a thunderstorm wind gust to 58 mph.

Thunderstorm Wind in PLATTE, MISSOURI
From 20-AUG-11 01:14:00 to 20-AUG-11 01:14:00 (CST-6)
Location: BARRY
Magnitude: 52.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Light poles were reported down in a hospital parking lot, on Barry Road. Trees were also reported down, with power outages reported as well. Thunderstorm wind gusts were estimated up to 60 mph.