A weak cold front moved into the area triggering showers and thunderstorms.  Some of the storms produced large hail and damaging winds.

Hail in GASCONADE, MISSOURI
From 03-JUL-11 12:23:00 to 03-JUL-11 12:23:00 (CST-6)
Location: CANAAN
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in GASCONADE, MISSOURI
From 03-JUL-11 12:30:00 to 03-JUL-11 12:30:00 (CST-6)
Location: OWENSVILLE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WARREN, MISSOURI
From 03-JUL-11 12:45:00 to 03-JUL-11 12:45:00 (CST-6)
Location: DUTZOW
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BOONE, MISSOURI
From 03-JUL-11 12:55:00 to 03-JUL-11 12:55:00 (CST-6)
Location: COLUMBIA
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in FRANKLIN, MISSOURI
From 03-JUL-11 13:07:00 to 03-JUL-11 13:07:00 (CST-6)
Location: GRAY SUMMIT
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in FRANKLIN, MISSOURI
From 03-JUL-11 13:09:00 to 03-JUL-11 13:09:00 (CST-6)
Location: SULLIVAN
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in ST. FRANCOIS, MISSOURI
From 03-JUL-11 13:18:00 to 03-JUL-11 13:19:00 (CST-6)
Location: ESTHER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in ST. FRANCOIS, MISSOURI
From 03-JUL-11 13:22:00 to 03-JUL-11 13:22:00 (CST-6)
Location: CANTWELL
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds blew down numerous large tree limbs.

Hail in FRANKLIN, MISSOURI
From 03-JUL-11 13:30:00 to 03-JUL-11 13:30:00 (CST-6)
Location: NEW HAVEN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in ST. LOUIS, MISSOURI
From 03-JUL-11 13:46:00 to 03-JUL-11 13:46:00 (CST-6)
Location: ST LOUIS WEISS ARPT
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in JEFFERSON, MISSOURI
From 03-JUL-11 13:40:00 to 03-JUL-11 13:40:00 (CST-6)
Location: HOUSE SPGS
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in CALLAWAY, MISSOURI
From 03-JUL-11 13:55:00 to 03-JUL-11 13:55:00 (CST-6)
Location: WILLIAMSBURG
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in ST. LOUIS, MISSOURI
From 03-JUL-11 13:35:00 to 03-JUL-11 13:35:00 (CST-6)
Location: ALLENTON
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds blew down numerous large tree limbs and damaged a sign at an amusement park.

Thunderstorm Wind in ST. CHARLES, MISSOURI
From 03-JUL-11 15:07:00 to 03-JUL-11 15:07:00 (CST-6)
Location: FORISTELL
Magnitude: 70.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm Wind in LINCOLN, MISSOURI
From 03-JUL-11 15:10:00 to 03-JUL-11 15:10:00 (CST-6)
Location: TROY
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Thunderstorm winds blew down several large trees, numerous tree limbs and power lines around town.

Thunderstorm Wind in ST. CHARLES, MISSOURI
From 03-JUL-11 15:28:00 to 03-JUL-11 15:28:00 (CST-6)
Location: FT ZUMWALT
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in CALLAWAY, MISSOURI
From 03-JUL-11 13:40:00 to 03-JUL-11 13:40:00 (CST-6)
Location: HOLTS SUMMIT
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds snapped off a couple of five inch diameter trees.

Thunderstorm Wind in STE. GENEVIEVE, MISSOURI
From 03-JUL-11 13:55:00 to 03-JUL-11 13:55:00 (CST-6)
Location: STE GENEVIEVE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm winds blew down several large tree limbs.  One tree limb caused minor roof damage to a house.

Lightning in BOONE, MISSOURI
From 03-JUL-11 14:30:00 to 03-JUL-11 14:30:00 (CST-6)
Location: HARG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Newspaper

Lightning struck a two story house on Clark Lane causing a fire.  No injuries were reported and fortunately the fire department was able to extinguish the flames fairly quickly.  Damage was estimated around $25,000.

Flash Flood in LINCOLN, MISSOURI
From 03-JUL-11 14:30:00 to 03-JUL-11 18:00:00 (CST-6)
Location: TROY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Up to four inches of rain fell in less than an hour causing flash flooding in and around the Troy area.  Four swift water rescues had to be performed and numerous roads were closed due to flooding for a few hours.  No injuries were reported.  A 5 foot by 12 foot flat trailer from a business was swept away by the floodwaters.  It went underneath a small bridge before coming to rest about 75 to 100 feet away from the business.

Thunderstorm Wind in BOONE, MISSOURI
From 03-JUL-11 13:05:00 to 03-JUL-11 13:07:00 (CST-6)
Location: HARG
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds blew down a large tree limb onto East New Haven Road.  Also, a large tree was blown down onto Highway WW at the intersection with Blackthorn Lane.

Thunderstorm Wind in WARREN, MISSOURI
From 03-JUL-11 14:40:00 to 03-JUL-11 14:43:00 (CST-6)
Location: WARRENTON
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds caused quite a bit of damage around town.  It blew off part of the roof of a commercial real estate building near the intersection of Highway 47 and Veterans Memorial Parkway.  Also, numerous trees, tree limbs and power lines were blown down.  The winds blew the roof off of a bank and the accompanying rains caused substantial damage inside the building.  A few trees and tree limbs landed on homes causing minor to moderate roof damage.  One tree landed on a car in the Taco Bell drive through.  The driver was not injured.

Thunderstorm Wind in WARREN, MISSOURI
From 03-JUL-11 14:50:00 to 03-JUL-11 14:52:00 (CST-6)
Location: WRIGHT CITY
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds blew down two large trees onto Bell Road.  Also, a couple of power poles were blown down.  Further east in town, several trees and numerous tree limbs were blown down.  A church lost its steeple due to the winds.

Hail in ST. LOUIS, MISSOURI
From 03-JUL-11 14:13:00 to 03-JUL-11 14:13:00 (CST-6)
Location: MEHLVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter