Several rounds of storms moved through the region during the period of July 18th through July 21st.  There were numerous reports of flash flooding and wind damage as well as some isolated reports of large hail.

Tornado in AUDRAIN, MISSOURI
From 20-JUL-10 06:15:00 to 20-JUL-10 06:17:00 (CST-6)
Location: MEXICO MEM ARPT
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado briefly touched down about a mile southwest of the Mexico Memorial Airport.  It initially damaged some trees and then travelled to the southeast crossing Highway JJ, destroying a barn on the east side of the highway.  It caused additional tree damage further to the southeast before lifting and dissipating.

Lightning in ST. LOUIS (C), MISSOURI
From 19-JUL-10 12:45:00 to 19-JUL-10 12:45:00 (CST-6)
Location: ST LOUIS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A 54 year old man was struck by lightning while working on a building in the 2000 block of Chouteau Avenue.  The man was using a rotary tool that touched a water pipe during a lightning strike.  The man received burns and a tingling sensation in his arm.  He was taken to a local hospital for observation.

Flash Flood in ST. LOUIS (C), MISSOURI
From 21-JUL-10 16:50:00 to 21-JUL-10 19:00:00 (CST-6)
Location: BADEN
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Up to 4 inches of rain fell in about an hour and a half causing flash flooding over northern portions of the city of St. Louis.  Interstate 70 was closed at Salisbury Street, Goodfellow Blvd., and South Florrisant Road due to flooding.  Also, numerous basements in the area were flooded due to sewer backup and local roads were flooded damaging several cars.

Flash Flood in ST. LOUIS, MISSOURI
From 21-JUL-10 16:50:00 to 21-JUL-10 19:00:00 (CST-6)
Location: RIVERVIEW
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Newspaper

Up to 4 inches of rain fell in an hour and a half causing flash flooding.  Numerous roads were flooded as well as basements in Northwoods and Pine Lawn.  Several cars were damaged due to the flood waters.

Hail in ST. FRANCOIS, MISSOURI
From 19-JUL-10 18:07:00 to 19-JUL-10 18:07:00 (CST-6)
Location: ESTHER
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in SHELBY, MISSOURI
From 20-JUL-10 01:29:00 to 20-JUL-10 01:29:00 (CST-6)
Location: SHELBINA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds blew down numerous large tree limbs in town.

Flash Flood in SHELBY, MISSOURI
From 20-JUL-10 05:20:00 to 21-JUL-10 02:12:00 (CST-6)
Location: CHERRY BOX
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Up to 9 inches of rain fell over a 24 hour period causing flash flooding.  Numerous roads were flooded including Routes M and H near Leonard, Route K west of Shelbyville along Black Creek, and Highway N southwest of Shelbyville.

Thunderstorm Wind in FRANKLIN, MISSOURI
From 19-JUL-10 06:05:00 to 19-JUL-10 06:05:00 (CST-6)
Location: WASHINGTON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Thunderstorm winds blew down a large tree in Washington.  It caused minor roof damage to a nearby house.

Flash Flood in RALLS, MISSOURI
From 20-JUL-10 03:35:00 to 21-JUL-10 02:12:00 (CST-6)
Location: ILASCO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Up to 6 inches of rain fell in a short amount of time causing flash flooding.  Numerous roads were flooded including Highway J near Lick Creek Bridge, Highway M west of U.S. Highway 61, Highway P between Center and Vandalia, and Highway 154 southeast of Perry.  One person ws evacuated along Flint Hill Road northeast of New London due to flooding.

Thunderstorm Wind in CRAWFORD, MISSOURI
From 18-JUL-10 20:00:00 to 18-JUL-10 20:00:00 (CST-6)
Location: CHERRYVILLE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Thunderstorm winds blew down numerous large tree limbs as well as a couple of large trees.

Flash Flood in CRAWFORD, MISSOURI
From 18-JUL-10 20:45:00 to 19-JUL-10 09:00:00 (CST-6)
Location: DILLARD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Up to 6 inches of rain fell in a short amount of time causing flash flooding.  Numerous roads were flooded including Cherryville Road and Highway 19.  Also, in Steelville several roads were flooded due to Yadkin Creek overflowing its banks.

Thunderstorm Wind in MONROE, MISSOURI
From 19-JUL-10 09:45:00 to 19-JUL-10 09:45:00 (CST-6)
Location: PARIS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm winds blew down numerous large tree limbs and blew over a picnic table destroying it.

Thunderstorm Wind in BOONE, MISSOURI
From 20-JUL-10 06:15:00 to 20-JUL-10 06:21:00 (CST-6)
Location: COLUMBIA
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Thunderstorm winds blew down some power lines on the north side of town and an agricultural weather station southeast of town measured a 58 MPH wind gust.

Flash Flood in MONROE, MISSOURI
From 20-JUL-10 06:40:00 to 21-JUL-10 02:12:00 (CST-6)
Location: MONROE CITY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Up to 5 inches of rain fell in a short amount of time causing flash flooding.  Numerous roads were flooded including the eastbound lanes of U.S. Highway 36 just west of Monroe City and numerous roads in the town of Monroe City.

Flash Flood in KNOX, MISSOURI
From 20-JUL-10 06:44:00 to 21-JUL-10 02:12:00 (CST-6)
Location: LOCUST HILL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Over 6 inches of rain fell in a short amount of time causing flash flooding.  Numerous roads were flooded including Highway 151 east of Novelty.

Thunderstorm Wind in WARREN, MISSOURI
From 20-JUL-10 07:15:00 to 20-JUL-10 07:15:00 (CST-6)
Location: WARRENTON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds blew down a large tree which knocked down a power line as it fell.

Flash Flood in LINCOLN, MISSOURI
From 20-JUL-10 10:00:00 to 20-JUL-10 10:45:00 (CST-6)
Location: ELSBERRY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Up to 3 inches of rain fell in a short amount of time causing flash flooding.  Numerous roads were flooded throughout the county, particularly near low water crossings.

Thunderstorm Wind in MARION, MISSOURI
From 19-JUL-10 10:00:00 to 19-JUL-10 10:00:00 (CST-6)
Location: HANNIBAL
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds blew down a six inch diameter tree as well as numerous large tree limbs.  The tree was blown onto a power line, knocking out the power to the immediate area.

Thunderstorm Wind in RALLS, MISSOURI
From 19-JUL-10 10:12:00 to 19-JUL-10 10:12:00 (CST-6)
Location: NEW LONDON
Magnitude: 62.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Thunderstorm winds blew down several large trees and numerous large tree limbs.  A couple of the trees fell onto unoccupied cars near the courthouse in New London.  The 71 mph wind gust was recorded on a tow boat in the Saverton Lock and Dam.

Flash Flood in MARION, MISSOURI
From 20-JUL-10 07:30:00 to 21-JUL-10 02:12:00 (CST-6)
Location: HANNIBAL
Flood cause: Heavy Rain
Property damage: 200.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Up to 6 inches of rain fell in a short amount of time causing flash flooding.  Numerous roads were flooded including several in Hannibal.  Also, Bear Creek in Hannibal overflowed its banks flooding a nearby parking lot with two feet of water and 35 to 40 residents along the creek had to be rescued from their homes by boat due to the flooding.

Thunderstorm Wind in CALLAWAY, MISSOURI
From 20-JUL-10 06:30:00 to 20-JUL-10 06:30:00 (CST-6)
Location: FULTON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds blew down at least a dozen large trees.  One tree fell onto a garage causing moderate damage.

Thunderstorm Wind in PIKE, MISSOURI
From 19-JUL-10 10:35:00 to 19-JUL-10 10:40:00 (CST-6)
Location: LOUISIANA
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Thunderstorm winds blew down a large tree in Louisiana.  It caused minor damage to a nearby house.

Flash Flood in PIKE, MISSOURI
From 20-JUL-10 05:32:00 to 20-JUL-10 21:00:00 (CST-6)
Location: BUSCH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Up to five inches of rain fell in a short amount of time causing flash flooding.  Numerous roads were flooded including Highway 79 north of Louisiana, U.S. Highways 54 and 61 in spots, and Highway UU northeast of Bowling Green.  Also, one woman drowned when she slipped at a low-water crossing and became trapped in a culvert.  It occurred at a popular swimming area call The Slabs on Pike County Road 252 along Buffalo Creek, about five miles south of Louisana.  She had been swimming in the rain-swollen creek with her son and his friend.  The boys were uninjured in the incident.  In Louisiana, several streets downtown were flooded for a time due to a creek flooding out of its banks.  Several businesses and homes sustained flooding damage.

Lightning in ST. LOUIS (C), MISSOURI
From 19-JUL-10 12:45:00 to 19-JUL-10 12:45:00 (CST-6)
Location: TOWER GROVE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A 50 year old woman was struck by lightning while working outside near the Jewel Box in Forest Park.  She was sitting on the back of a truck with her feet touching the ground when she was struck.  The lightning went up her foot and through her legs. She was alert and conscious when the paramedics arrived but was taken to a local hospital for evaluation.

Thunderstorm Wind in AUDRAIN, MISSOURI
From 20-JUL-10 06:10:00 to 20-JUL-10 06:12:00 (CST-6)
Location: MEXICO
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds blew down numerous trees, tree limbs and power lines down around town.  A couple of trees and tree limbs caused minor damage to the roofs of at least two homes in town.  One unoccupied vehicle was destroyed by a fallen tree.  Also, a barn was blown down about 3 miles east southeast of Mexico.