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

Hail in WARREN, MISSOURI
From 17-JAN-12 00:50:00 to 17-JAN-12 00:50:00 (CST-6)
Location: WARRENTON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in ST. CHARLES, MISSOURI
From 17-JAN-12 01:15:00 to 17-JAN-12 01:15:00 (CST-6)
Location: FLINT HILL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in WARREN, MISSOURI
From 17-JAN-12 01:18:00 to 17-JAN-12 01:18:00 (CST-6)
Location: DUTZOW
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in GASCONADE, MISSOURI
From 17-JAN-12 01:20:00 to 17-JAN-12 01:20:00 (CST-6)
Location: OWENSVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in ST. LOUIS, MISSOURI
From 17-JAN-12 01:50:00 to 17-JAN-12 01:50:00 (CST-6)
Location: TOWN AND COUNTRY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm winds blew down a large pine tree.

Hail in ST. LOUIS, MISSOURI
From 17-JAN-12 01:52:00 to 17-JAN-12 01:52:00 (CST-6)
Location: OVERLAND
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in FRANKLIN, MISSOURI
From 17-JAN-12 01:57:00 to 17-JAN-12 01:57:00 (CST-6)
Location: JAPAN
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in FRANKLIN, MISSOURI
From 17-JAN-12 01:42:00 to 17-JAN-12 01:42:00 (CST-6)
Location: ST CLAIR
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in ST. LOUIS (C), MISSOURI
From 17-JAN-12 02:10:00 to 17-JAN-12 02:10:00 (CST-6)
Location: ST LOUIS
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in ST. LOUIS, MISSOURI
From 17-JAN-12 02:15:00 to 17-JAN-12 02:15:00 (CST-6)
Location: SAPPINGTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in ST. LOUIS, MISSOURI
From 17-JAN-12 02:18:00 to 17-JAN-12 02:18:00 (CST-6)
Location: MEACHAM PARK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in FRANKLIN, MISSOURI
From 17-JAN-12 01:50:00 to 17-JAN-12 01:50:00 (CST-6)
Location: LONEDELL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in FRANKLIN, MISSOURI
From 17-JAN-12 04:43:00 to 17-JAN-12 04:43:00 (CST-6)
Location: PACIFIC
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in ST. LOUIS, MISSOURI
From 17-JAN-12 04:57:00 to 17-JAN-12 04:57:00 (CST-6)
Location: ROCK HILL
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm Wind in WASHINGTON, MISSOURI
From 17-JAN-12 05:50:00 to 17-JAN-12 05:50:00 (CST-6)
Location: BELGRADE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds picked up a carport and blew it across the front yard of a residence in town.

Hail in ST. FRANCOIS, MISSOURI
From 17-JAN-12 05:58:00 to 17-JAN-12 05:58:00 (CST-6)
Location: BONNE TERRE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in ST. FRANCOIS, MISSOURI
From 17-JAN-12 06:22:00 to 17-JAN-12 06:22:00 (CST-6)
Location: FARMINGTON ARPT
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Thunderstorm Wind in CRAWFORD, MISSOURI
From 17-JAN-12 01:54:00 to 17-JAN-12 01:54:00 (CST-6)
Location: BOURBON
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Thunderstorm winds caused minor roof damage to a residence along old Route 66.

Thunderstorm Wind in STE. GENEVIEVE, MISSOURI
From 17-JAN-12 06:24:00 to 17-JAN-12 06:24:00 (CST-6)
Location: SPROTT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Thunderstorm winds blew over three power poles near the Ste. Genevieve/St. Francois county line, just east of Farmington.

Hail in FRANKLIN, MISSOURI
From 17-JAN-12 02:02:00 to 17-JAN-12 02:02:00 (CST-6)
Location: SULLIVAN
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio