Overnight August 11th into August 12th, discrete supercells congealed into a convective complex. This system produced widespread wind damage from northeast Missouri and west central Illinois as far south as the St. Louis Metropolitan Area.

Thunderstorm Wind in PIKE, MISSOURI
From 12-AUG-23 01:40:00 to 12-AUG-23 02:02:00 (CST-6)
Location: BOWLING GREEN
Magnitude: 56.00 EG
Reported by: Law Enforcement

Large trees covered roadways as a result of thunderstorm wind gusts. The line of storms intensified as it passed over Bowling Green.

Thunderstorm Wind in AUDRAIN, MISSOURI
From 12-AUG-23 02:16:00 to 12-AUG-23 02:16:00 (CST-6)
Location: MEXICO MEM ARPT
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

The AWOS at Mexico Memorial Airport measured a gust of 61 mph along the leading edge of a bowing segment independent from the primary line of storms.

Thunderstorm Wind in AUDRAIN, MISSOURI
From 12-AUG-23 02:31:00 to 12-AUG-23 02:41:00 (CST-6)
Location: SCOTTS CORNER
Magnitude: 56.00 EG
Reported by: Public

Numerous large maple trees sustained damage with one tree blown over and another split in half. This occurred as a bowing segment largely independent of the primary line of storms passed over the location.

Thunderstorm Wind in MONROE, MISSOURI
From 12-AUG-23 02:13:00 to 12-AUG-23 02:21:00 (CST-6)
Location: VICTOR
Magnitude: 65.00 EG
Reported by: Emergency Manager

Emergency management shared photos of damage to RVs, a camper rolled on its side, damage to the roof of an outbuilding, and damage to multiple large vehicle ports.

Thunderstorm Wind in ST. LOUIS, MISSOURI
From 12-AUG-23 03:50:00 to 12-AUG-23 03:50:00 (CST-6)
Location: SOUTH BELLEFONTAINE
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 Chesterfield Parkway East and Schoettler Valley Drive.

Thunderstorm Wind in LINCOLN, MISSOURI
From 12-AUG-23 03:02:00 to 12-AUG-23 03:17:00 (CST-6)
Location: HAWK PT
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A bowing segment merged with the primary line of storms, causing widespread wind damage across southern portion of Lincoln County.  Near Hawk Point, an open sided pole barn was shifted off it's foundation with part of the end wall blown out. There were numerous reports of trees down throughout Troy and one report of downed power poles near Old Monroe.

Thunderstorm Wind in MARION, MISSOURI
From 12-AUG-23 00:12:00 to 12-AUG-23 00:20:00 (CST-6)
Location: WEST ELY
Magnitude: 61.00 EG
Reported by: Law Enforcement

The leading edge of the storm impacted Rensselaer and Palmyra at nearly the same time, causing widespread damage to a farm and destroying a garage in Rensselaer. Several trees were downed there as well, and a 10 inch diameter tree fell in Palmyra.

Tornado in MONTGOMERY, MISSOURI
From 12-AUG-23 02:34:00 to 12-AUG-23 02:38:00 (CST-6)
Location: WELLSVILLE
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado touched down 5 miles southwest of Middletown, on the west side of Swope School Road, just north of intersection with Highway A. In this location, several trees and tree branches were blown down. The tornado moved to the southeast, crossing Highway A and then as it crossed Trinity Church Road, several large tree limbs were snapped off and blocked the road. The tornado continued to the southeast for almost two more miles with additional minor tree damage before lifting and dissipating near the intersection of Nagel Road and Poppy Road, about 4 miles south southwest of Middletown. Overall the tornado was rated EF0 with a path length of 2.54 miles and a max path width of 40 yards. No deaths or injuries were reported.

Thunderstorm Wind in ST. CHARLES, MISSOURI
From 12-AUG-23 03:20:00 to 12-AUG-23 03:45:00 (CST-6)
Location: WENTZVILLE ARPT
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Social Media

There was widespread tree damage across St. Charles County. The damage was reported in Flint Hill, Wentzville, O'Fallon, St. Peters, St. Charles, Weldon Springs and Cottleville. Also, in Flint Hill there was minor shingle damage to a few homes. In O'Fallon, a large branch snapped off and damaged a vinyl fence. On the north side of St. Charles, a large tree branch was blown down onto a house, causing minor roof, soffit and gutter damage. In Weldon Springs, a large tree was blown over near the intersection of Independence Road and Patriotic Trail.

Thunderstorm Wind in JEFFERSON, MISSOURI
From 12-AUG-23 04:09:00 to 12-AUG-23 04:10:00 (CST-6)
Location: HOENE SPG
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Six inch tree limbs snapped from several trees in the area along Highway W.

Thunderstorm Wind in PIKE, MISSOURI
From 12-AUG-23 00:51:00 to 12-AUG-23 00:57:00 (CST-6)
Location: LOUISIANA
Magnitude: 60.00 EG
Reported by: Trained Spotter

A trained spotter submitted photos of a large 8-10 inch tree limb down at their residence. The spotter noted a large evergreen was down near the Dollar General and multiple smaller limbs less than 4 inches in diameter were down throughout town. This occurred as the leading edge of the line of storms surged as it passed over town.