A frontal boundary served to focus additional severe thunderstorm activity, during the late afternoon and evening hours of July 20, 2010.

Flash Flood in CLAY, MISSOURI
From 20-JUL-10 16:15:00 to 20-JUL-10 22:15:00 (CST-6)
Location: MOSBY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Six to eight inches of water was reported on Highway 69, at the railroad crossing.

Thunderstorm Wind in JOHNSON, MISSOURI
From 20-JUL-10 17:42:00 to 20-JUL-10 17:42:00 (CST-6)
Location: (SZL)WHITEMAN AFB
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in PETTIS, MISSOURI
From 20-JUL-10 18:02:00 to 20-JUL-10 18:02:00 (CST-6)
Location: SEDALIA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm wind gusts were estimated up to 60 mph, with power outages reported in Sedalia.

Thunderstorm Wind in PETTIS, MISSOURI
From 20-JUL-10 18:02:00 to 20-JUL-10 18:02:00 (CST-6)
Location: SEDALIA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tree limbs up to 6 inches in diameter were reported snapped off. Thunderstorm wind gusts were estimated up to 60 mph.

Thunderstorm Wind in JACKSON, MISSOURI
From 20-JUL-10 16:55:00 to 20-JUL-10 16:55:00 (CST-6)
Location: GRAIN VLY ARPT
Magnitude: 52.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Trained Spotter

A twelve inch diameter tree was knocked down on a house. Thunderstorm wind gusts were estimated up to 60 mph.

Thunderstorm Wind in PETTIS, MISSOURI
From 20-JUL-10 18:04:00 to 20-JUL-10 18:04:00 (CST-6)
Location: GREEN RIDGE
Magnitude: 61.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm wind gusts were estimated up to 70 mph. The high winds knocked down 2 foot diameter trees, and also brought down power lines.

Thunderstorm Wind in LAFAYETTE, MISSOURI
From 20-JUL-10 17:15:00 to 20-JUL-10 17:15:00 (CST-6)
Location: AULLVILLE
Magnitude: 61.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm wind gusts were estimated up to 70 mph. Trees and power poles were reported down, along with many tree limbs.

Flash Flood in SALINE, MISSOURI
From 20-JUL-10 19:00:00 to 21-JUL-10 01:00:00 (CST-6)
Location: SWEET SPGS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Route VV and Highway 127 were reported closed, due to flooding along Davis Creek.

Thunderstorm Wind in JACKSON, MISSOURI
From 20-JUL-10 16:52:00 to 20-JUL-10 16:52:00 (CST-6)
Location: OAK GROVE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm wind gusts were estimated to 70 mph, at I-70 and H Highway.

Thunderstorm Wind in JACKSON, MISSOURI
From 20-JUL-10 16:50:00 to 20-JUL-10 16:50:00 (CST-6)
Location: OAK GROVE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several trees and large limbs were reported down. Thunderstorm wind gusts were estimated up to 60 mph.

Thunderstorm Wind in LAFAYETTE, MISSOURI
From 20-JUL-10 17:12:00 to 20-JUL-10 17:12:00 (CST-6)
Location: HIGGINSVILLE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm wind gusts were estimated up to 60 mph.

Thunderstorm Wind in PETTIS, MISSOURI
From 20-JUL-10 17:50:00 to 20-JUL-10 17:50:00 (CST-6)
Location: STOKEY
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm wind gusts were estimated up to 70 mph.