A cold front moved through the region, triggering showers and thunderstorms. Some of the storms produced large hail and damaging winds.

Hail in ST. LOUIS, MISSOURI
From 04-JUN-12 15:43:00 to 04-JUN-12 15:45:00 (CST-6)
Location: BALLWIN
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Large hail up to ping pong ball size fell across Ballwin. An eleven year old girl sustained minor injuries to her head and arm due to the large hail.

Hail in ST. CHARLES, MISSOURI
From 04-JUN-12 15:00:00 to 04-JUN-12 15:05:00 (CST-6)
Location: FT ZUMWALT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in ST. CHARLES, MISSOURI
From 04-JUN-12 15:10:00 to 04-JUN-12 15:10:00 (CST-6)
Location: ST PETERS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in ST. CHARLES, MISSOURI
From 04-JUN-12 15:10:00 to 04-JUN-12 15:10:00 (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.

Hail in ST. CHARLES, MISSOURI
From 04-JUN-12 15:13:00 to 04-JUN-12 15:13:00 (CST-6)
Location: ST CHARLES
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in ST. CHARLES, MISSOURI
From 04-JUN-12 15:10:00 to 04-JUN-12 15:15:00 (CST-6)
Location: ALL SAINTS VLG
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

There were numerous reports of large hail in Cottleville, including one inch hail on the campus of St. Charles Community College.

Hail in ST. CHARLES, MISSOURI
From 04-JUN-12 15:19:00 to 04-JUN-12 15:19:00 (CST-6)
Location: COTTLEVILLE
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in ST. LOUIS, MISSOURI
From 04-JUN-12 15:30:00 to 04-JUN-12 15:30:00 (CST-6)
Location: ELLISVILLE
Magnitude: 50.00 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 several power lines near the intersection of Clarkson Road and Clayton Road.

Hail in ST. LOUIS, MISSOURI
From 04-JUN-12 15:38:00 to 04-JUN-12 15:39:00 (CST-6)
Location: SOUTH BELLEFONTAINE
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Hail in ST. LOUIS, MISSOURI
From 04-JUN-12 15:35:00 to 04-JUN-12 15:35:00 (CST-6)
Location: ELLISVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in ST. LOUIS, MISSOURI
From 04-JUN-12 15:43:00 to 04-JUN-12 15:43:00 (CST-6)
Location: MANCHESTER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Hail in ST. LOUIS, MISSOURI
From 04-JUN-12 15:50:00 to 04-JUN-12 15:50:00 (CST-6)
Location: MORSCHELS
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail fell at the intersection of Hillsboro Road and Bridleridge Crossing Spur.

Hail in JEFFERSON, MISSOURI
From 04-JUN-12 15:50:00 to 04-JUN-12 15:52:00 (CST-6)
Location: HIGH RIDGE
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several reports of large hail with the largest hail reported at the intersection of Rock Creek Road and W 4 Ridge Road.

Hail in JEFFERSON, MISSOURI
From 04-JUN-12 16:05:00 to 04-JUN-12 16:05:00 (CST-6)
Location: HOUSE SPGS
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in ST. LOUIS, MISSOURI
From 04-JUN-12 15:29:00 to 04-JUN-12 15:29:00 (CST-6)
Location: GUMBO
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail mostly the size of quarters, but a few were golfball sized near the intersection of I-64/Hwy 40 and Boones Crossing.