Even though an old outflow boundary was across southeast Missouri and the far southern portions of Illinois during the morning hours, the boundary dissipated, allowing 75+ dew points to surge north along the Mississippi River. As skies cleared the atmosphere was able to quickly destabilize. Surface based CAPEs were in excess of 3000 J/kg with 40kts of 0 to 6km bulk shear. This combined with a shortwave trough that moved eastward across the region, produced strong to severe storms. There were numerous reports of damaging winds and some reports of large hail. There were three fatalities due to fallen trees.

Thunderstorm Wind in ST. LOUIS (C), MISSOURI
From 01-JUL-23 14:40:00 to 01-JUL-23 14:55:00 (CST-6)
Location: TOWER GROVE
Magnitude: 65.00 EG
Property damage: 500.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Widespread wind damage across the northern portions of the city as a line of storms moved through. Numerous large trees, tree limbs, power poles and power lines were blown down. A woman who was waiting for the storm to pass was killed when a large tree was blown over, crushing the car in the alley of the 4100 block of Chouteau Avenue. Two historical cemeteries, Calvary and Bellefontaine, sustained widespread damage. Around 100 trees at Calvary and nearly 40 significant trees and 100 smaller ones at Bellefontaine, were either uprooted or snapped off near the base, as well as numerous tree limbs. Several gravestones were either damaged or destroyed by fallen trees and/or tree limbs. A large tree was uprooted in the 3000 block of Longfellow Boulevard, landing on a house causing major roof damage. A couple of power poles were snapped off along Hall Street. Over 100,000 customers (St. Louis County/St. Louis City) were without power due to this storm. It took a little over 4 days to restore power to all of them.

Thunderstorm Wind in ST. LOUIS, MISSOURI
From 01-JUL-23 23:33:00 to 01-JUL-23 23:47:00 (CST-6)
Location: DES PERES
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Widespread wind damage occurred along the I-270 corridor in St. Louis County between Kirkwood and Saint Ann. Numerous tree limbs were blown down in Kirkwood, Creve Coeur, Maryland Heights, Woodson Terrace and Saint Ann.

Thunderstorm Wind in WARREN, MISSOURI
From 01-JUL-23 22:50:00 to 01-JUL-23 22:50:00 (CST-6)
Location: DUTZOW
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Thunderstorm Wind in JEFFERSON, MISSOURI
From 01-JUL-23 14:35:00 to 01-JUL-23 14:42:00 (CST-6)
Location: DITTMER
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Thunderstorm winds caused scattered damage through the northern half of Jefferson County. Several small to medium tree branches were blown down around Dittmer. Several trees were blown down on the north side of Hillsboro.

Thunderstorm Wind in ST. CHARLES, MISSOURI
From 01-JUL-23 23:00:00 to 01-JUL-23 23:10:00 (CST-6)
Location: AUGUSTA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Thunderstorm winds blew down numerous tree limbs along Highway 94, especially between Augusta and Definance.

Strong Wind in MARION, MISSOURI
From 01-JUL-23 19:55:00 to 01-JUL-23 19:55:00 (CST-6)
Magnitude: 43.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A non-severe thunderstorm moved through Hannibal. Winds gusted up to 50 mph and blew down a large tree that was rotten inside. The tree fell onto an occupied camper located on the 1600 block of Montana Street. A person inside the camper was crushed by the fallen tree and was pronounced dead on the scene.

Thunderstorm Wind in GASCONADE, MISSOURI
From 01-JUL-23 22:15:00 to 01-JUL-23 22:15:00 (CST-6)
Location: BAY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Thunderstorm winds caused crop damage near Bay.

Thunderstorm Wind in FRANKLIN, MISSOURI
From 01-JUL-23 22:50:00 to 01-JUL-23 22:50:00 (CST-6)
Location: SOUTH PT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Thunderstorm winds blew down numerous large tree limbs.

Hail in FRANKLIN, MISSOURI
From 01-JUL-23 22:32:00 to 01-JUL-23 22:32:00 (CST-6)
Location: DISSEN
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in ST. CHARLES, MISSOURI
From 01-JUL-23 14:08:00 to 01-JUL-23 14:08:00 (CST-6)
Location: ALL SAINTS VLG
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds snapped a maple tree off near the base.

Thunderstorm Wind in ST. LOUIS, MISSOURI
From 01-JUL-23 14:23:00 to 01-JUL-23 14:50:00 (CST-6)
Location: SOUTH BELLEFONTAINE
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Widespread wind damage across the northern portions of St. Louis County as a line of storms moved through. Numerous large trees, tree limbs, power poles and power lines were blown down. In Jennings, a very large tree was snapped off (possibly due to a lightning strike) and landed on a home, crushing a 5 year old boy in his bedroom. He was rescued and taken to a nearby hospital, but was pronounced dead soon after. The house next door sustained major roof damage from this large tree as well.  A large tree branch, approximately two feet in diameter, was blown down onto an unoccupied car just east of Chesterfield. In Kirkwood, a large tree was uprooted and as it fell it damaged the corner of a home. Otherwise, widespread tree damage was reported in St. Ann, Clayton, University City, Creve Coeur, Overland, Florissant, Black Jack and Spanish Lake. Over 100,000 customers (St. Louis County/St. Louis City) were without power due to this storm. It took a little over 4 days to restore power to all of them.

Thunderstorm Wind in ST. FRANCOIS, MISSOURI
From 01-JUL-23 14:58:00 to 01-JUL-23 15:00:00 (CST-6)
Location: KNOB LICK
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds blew down several trees and tree limbs around Knob Lick.

Thunderstorm Wind in JEFFERSON, MISSOURI
From 01-JUL-23 15:00:00 to 01-JUL-23 15:05:00 (CST-6)
Location: HEMATITE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds blew down several trees along Highway CC just south southwest of Festus. In Festus, a large tree was blown over as well as numerous tree limbs.

Thunderstorm Wind in CRAWFORD, MISSOURI
From 01-JUL-23 13:50:00 to 01-JUL-23 14:00:00 (CST-6)
Location: CHERRYVILLE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Numerous reports of trees and tree limbs blown down between Cherryville and Leasburg. Some of the fallen trees blocked roadways.

Thunderstorm Wind in WASHINGTON, MISSOURI
From 01-JUL-23 14:10:00 to 01-JUL-23 14:12:00 (CST-6)
Location: ANTHONIES MILL
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds blew down several large trees and numerous tree limbs in the Woodland Lakes community. Also, several campers and awnings were damaged either due to fallen trees and/or tree limbs. Numerous power lines were knocked down as well.

Thunderstorm Wind in FRANKLIN, MISSOURI
From 01-JUL-23 14:08:00 to 01-JUL-23 14:23:00 (CST-6)
Location: SULLIVAN
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

As a storm moved east northeast across southern Franklin county, it produced a wide swath of damaging winds. Numerous trees, tree limbs and power lines were blown down. One large tree was blown down in Sullivan. Also, numerous trees were blown down along Highway 185, Highway K and Highway 30 between Sullivan and St. Clair.

Thunderstorm Wind in STE. GENEVIEVE, MISSOURI
From 01-JUL-23 15:25:00 to 01-JUL-23 15:28:00 (CST-6)
Location: STE GENEVIEVE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds blew down a large tree damaging an unoccupied car in Ste. Genevieve. In Saint Mary, several large tree limbs were blown down around town.

Thunderstorm Wind in ST. FRANCOIS, MISSOURI
From 01-JUL-23 14:34:00 to 01-JUL-23 14:55:00 (CST-6)
Location: BONNE TERRE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Thunderstorm winds blew down several large tree limbs around Bonne Terre. A couple limbs landed on vehicles causing minor to moderate damage. Further east, numerous trees and tree limbs were blown down in the Goose Creek Lake area.