An MCV slowly tracked eastward through the forecast area just ahead of a cold front. Numerous showers and storms developed. Some of the storms became severe and produced large hail, damaging winds and flash flooding.

Hail in FRANKLIN, MISSOURI
From 30-AUG-19 14:25:00 to 30-AUG-19 14:53:00 (CST-6)
Location: SULLIVAN MEM ARPT
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A wide swath of large hail fell from the Sullivan area northeastward towards Stanton. The large hail stone was 2.5 inches in diameter on the north side of Sullivan.

Thunderstorm Wind in FRANKLIN, MISSOURI
From 30-AUG-19 14:31:00 to 30-AUG-19 14:45:00 (CST-6)
Location: SULLIVAN MEM ARPT
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Widespread wind damage occurred throughout Sullivan, MO. Numerous trees were either snapped off or uprooted. Also, a large portion of the roof of a skating rink was blown off. The section of roof landed on an unoccupied truck in the parking lot. Tree limbs and several power lines were blown down around town. Some of the fallen trees and tree limbs caused minor to moderate damage to nearby homes. County Road 185 near Sullivan was closed for about two hours to remove power lines and snapped poles from the roadway.  No injuries were reported.

Thunderstorm Wind in FRANKLIN, MISSOURI
From 30-AUG-19 15:00:00 to 30-AUG-19 15:05:00 (CST-6)
Location: ST CLAIR
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

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

Thunderstorm Wind in ST. LOUIS, MISSOURI
From 30-AUG-19 16:16:00 to 30-AUG-19 16:16:00 (CST-6)
Location: (SUS)SPIRIT/ST LOUIS
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Flash Flood in ST. LOUIS, MISSOURI
From 30-AUG-19 16:24:00 to 30-AUG-19 22:00:00 (CST-6)
Location: ALLENTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Up to five inches fell in a short amount of time onto already saturated soils, this caused flash flooding in a number of locations. At least a foot and a half of water was flowing over 5th Street in Eureka and the athletic fields at Eureka High School were flooded once again. At the intersection of Chesterfield Parkway and Justus Post Road in Chesterfield, two feet of water was over the roadway and several water rescues had to be performed in the area. Highway 141 was flooded where it goes under I-44 in Valley Park. Another water rescue was performed near the intersection of Meramec Station and Smizer Mill Road in Fenton. A swift water rescue was performed on Fox Creek Crossing Drive where it crosses Little Fox Creek. It was well out of it's banks and a red truck was stranded in the rapidly rising water there. The fire department had to throw a rope and life jacket to the man and pull him to safety.  There was also flowing water over the intersection of Big Bend Road and Sanders Drive and on Manchester Road just east of intersection with Brentwood Blvd. No injuries were reported with any of the rescues.

Flash Flood in JEFFERSON, MISSOURI
From 30-AUG-19 17:34:00 to 30-AUG-19 18:30:00 (CST-6)
Location: HOENE SPG
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Up to four inches of rain in a short amount of time onto already saturated soils caused flash flooding. Numerous roads were flooded including the intersection of Highway W and Winnifred Drive.

Thunderstorm Wind in ST. LOUIS, MISSOURI
From 30-AUG-19 15:40:00 to 30-AUG-19 15:55:00 (CST-6)
Location: GROVER
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Thunderstorm winds blew down several large tree limbs as well as a tree which fell onto Highway 100 just east of Wildwood. Several power poles were broken.

Thunderstorm Wind in FRANKLIN, MISSOURI
From 30-AUG-19 14:15:00 to 30-AUG-19 14:25:00 (CST-6)
Location: STRAIN
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds uprooted a two foot diameter tree about 5 miles south southeast of Rosebud. Also, a small tree was uprooted in Spring Bluff.