A mesoscale convective complex moved southeast across the area, mainly along and east of Mississippi River. There were numerous reports of damaging winds, large hail, flash flooding and even a tornado with some of these storms.

Hail in JEFFERSON, MISSOURI
From 28-JUN-18 18:40:00 to 28-JUN-18 18:40:00 (CST-6)
Location: HILLSBORO
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Thunderstorm Wind in ST. FRANCOIS, MISSOURI
From 28-JUN-18 20:00:00 to 28-JUN-18 20:05:00 (CST-6)
Location: BISMARCK MEM ARPT
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds blew down several trees and power lines just south of Bismarck onto Highway N. Just north of Knob Lick, thunderstorm winds blew down several large tree limbs. One of the limbs damaged guttering on a house.

Hail in ST. FRANCOIS, MISSOURI
From 28-JUN-18 19:35:00 to 28-JUN-18 19:35:00 (CST-6)
Location: CANTWELL
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in LINCOLN, MISSOURI
From 28-JUN-18 15:40:00 to 28-JUN-18 15:45:00 (CST-6)
Location: ELSBERRY
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds blew down several trees around town.

Thunderstorm Wind in ST. CHARLES, MISSOURI
From 28-JUN-18 16:45:00 to 28-JUN-18 16:45:00 (CST-6)
Location: HARVESTER
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Thunderstorm winds blew down a large silver maple tree near the intersection of Highway 94 and Harvester Road.

Thunderstorm Wind in ST. CHARLES, MISSOURI
From 28-JUN-18 16:30:00 to 28-JUN-18 16:30:00 (CST-6)
Location: ST CHARLES
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm winds blew down several power lines near the intersection of N. Kingshighway Street and Elm Street.

Thunderstorm Wind in ST. LOUIS, MISSOURI
From 28-JUN-18 16:57:00 to 28-JUN-18 16:57:00 (CST-6)
Location: WEBSTER GROVES
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A large tree was blown down in Oakland.

Thunderstorm Wind in RALLS, MISSOURI
From 28-JUN-18 14:45:00 to 28-JUN-18 14:45:00 (CST-6)
Location: SAVERTON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds blew down a tree across a road just south southwest of Saverton.

Thunderstorm Wind in PIKE, MISSOURI
From 28-JUN-18 15:20:00 to 28-JUN-18 15:22:00 (CST-6)
Location: CALUMET
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds blew down a power line about 3 miles north of Eolia. In Bowling Green, a tree was blown down as well as a stop sign.

Flash Flood in ST. FRANCOIS, MISSOURI
From 28-JUN-18 20:45:00 to 29-JUN-18 01:00:00 (CST-6)
Location: BONNE TERRE ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Up to three inches of rain fell in just over an hour causing flash flooding. Numerous roads were flooded including Highway 8 just west of Desloge and Highway K in Bonne Terre.

Thunderstorm Wind in ST. LOUIS (C), MISSOURI
From 28-JUN-18 16:50:00 to 28-JUN-18 16:56:00 (CST-6)
Location: ST LOUIS
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A wide swath of damaging winds moved southward across the City of St. Louis. Numerous trees, tree limbs and power lines were blown down. One large tree was blown down near the round-about heading into Forest Park near the zoo. Another large tree fell and was blocking Fountain Avenue. Just north of downtown a light pole was snapped off at the base.

Thunderstorm Wind in ST. LOUIS, MISSOURI
From 28-JUN-18 16:28:00 to 28-JUN-18 16:36:00 (CST-6)
Location: ROBERTSON
Magnitude: 63.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A wide swath of damaging winds moved through northern portions of St. Louis County. Numerous trees, tree limbs and power lines were blown down in Bridgeton, Hazelwood, Florissant, Ferguson, Spanish Lake, and Glasgow Village. In Spanish Lake, a bus stop bench was blown into the street and a small shed was blown over. In Glasgow Village, a large tree was blown over onto a house, destroying it. Fortunately no one was home at the time and the family dogs were in the basement and unharmed. Another home in the area had a large portion of a tree fall on it, crashing through the roof and ceiling of the dining room and bedroom. The occupants  in the house made it to the basement just in time before the tree fell over. No injuries were reported.

Thunderstorm Wind in ST. CHARLES, MISSOURI
From 28-JUN-18 16:17:00 to 28-JUN-18 16:23:00 (CST-6)
Location: ORCHARD FARM
Magnitude: 51.00 MG
Property damage: 34.00K
Crop damage: 0.00K
Reported by: ASOS

A wide swath of damaging winds moved across the eastern half of St. Charles County. There were numerous reports of large trees, tree branches and power lines blown down. In Portage Des Sioux at two local marinas on the Mississippi River, several boats were cast into the main channel. Also, a dock was flipped over as well as a pickup truck. Near West Alton, a wooden barn was flattened and several large trees blown down. Winds were estimated between 60 and 80 MPH in the Portage Des Sioux area.

Thunderstorm Wind in ST. LOUIS (C), MISSOURI
From 28-JUN-18 16:38:00 to 28-JUN-18 16:40:00 (CST-6)
Location: BADEN
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Thunderstorm winds blew down high voltage power lines in the far northern portions of the City of St. Louis on Riverview Avenue. Also, numerous tree limbs and power lines were blown down in the area. One of the large tree branches landed on a car that was traveling on Riverview Avenue. The driver and two children were uninjured but the car sustained moderate damage from the fallen tree limb.