Storms developed ahead of a frontal boundary. Some of the storms were severe producing damaging winds and large hail.

Thunderstorm Wind in ST. LOUIS, MISSOURI
From 09-APR-15 18:16:00 to 09-APR-15 18:20:00 (CST-6)
Location: MONARCH
Magnitude: 104.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Damage at Spirit of St. Louis Airport was caused by a microburst, most likely near the end of runway 26R.  The microburst began around 716 pm and likely ended shortly thereafter around 720 pm.  There was heavy damage to a building about 440 yards from the end of runway 26R.  The wind was estimated at up to 120 mph when it hit the building.  A small garage door was blown off its track and the wind entered the building through this space.  The wind peeled off the roof and compromised the structure of a second garage.  The roof of this second garage mostly collapsed into the building.  Roof materials were thrown as much as 150 yards from the building, including air conditioning units.  The damage pattern was clearly divergent which lends to the microburst identification.  Scattered minor tree, sign and roof damage was noted on the northern periphery of the microburst.  Estimated wind speeds ranged from 65 to 90 mph.

Thunderstorm Wind in BOONE, MISSOURI
From 09-APR-15 15:05:00 to 09-APR-15 15:05:00 (CST-6)
Location: CENTRALIA
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Thunderstorm winds blew over a large tree onto a mobile home on Alco Street near intersection with South Green Street. The occupant was injured with numerous broken bones.

Hail in MONTGOMERY, MISSOURI
From 09-APR-15 16:10:00 to 09-APR-15 16:10:00 (CST-6)
Location: MINEOLA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Thunderstorm Wind in MONTGOMERY, MISSOURI
From 09-APR-15 16:10:00 to 09-APR-15 16:10:00 (CST-6)
Location: MINEOLA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several large tree limbs were blown down.

Hail in MONTGOMERY, MISSOURI
From 09-APR-15 16:20:00 to 09-APR-15 16:22:00 (CST-6)
Location: HIGH HILL
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in PIKE, MISSOURI
From 09-APR-15 16:30:00 to 09-APR-15 16:30:00 (CST-6)
Location: BOWLING GREEN
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Hail in LINCOLN, MISSOURI
From 09-APR-15 16:45:00 to 09-APR-15 17:04:00 (CST-6)
Location: HAWK PT
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A long swath of golf ball sized hail fell across Lincoln County from Hawk Point, through Troy to Winfield.

Thunderstorm Wind in LINCOLN, MISSOURI
From 09-APR-15 16:50:00 to 09-APR-15 17:02:00 (CST-6)
Location: SOUTH TROY
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm winds blew down numerous power lines onto Highway 47 near the juncture with Highways H and J west of Troy. Also, 4 to 5 power poles were snapped off on about 4 feet above the ground on North Moore School Road west of Troy. In Winfield, a 5 inch diameter poplar tree was snapped off.

Hail in BOONE, MISSOURI
From 09-APR-15 14:35:00 to 09-APR-15 15:05:00 (CST-6)
Location: ROCHEPORT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in ST. CHARLES, MISSOURI
From 09-APR-15 18:00:00 to 09-APR-15 18:00:00 (CST-6)
Location: ST CHARLES
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in ST. LOUIS, MISSOURI
From 09-APR-15 17:54:00 to 09-APR-15 17:54:00 (CST-6)
Location: (SUS)SPIRIT/ST LOUIS
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Hail in ST. LOUIS, MISSOURI
From 09-APR-15 18:28:00 to 09-APR-15 18:28:00 (CST-6)
Location: CHARLACK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Large hail up to one inch in diameter was reported in St. John.

Hail in FRANKLIN, MISSOURI
From 09-APR-15 17:40:00 to 09-APR-15 17:40:00 (CST-6)
Location: DISSEN
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in ST. LOUIS, MISSOURI
From 09-APR-15 18:23:00 to 09-APR-15 18:23:00 (CST-6)
Location: MARYLAND HGTS
Magnitude: 63.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MADISON, MISSOURI
From 09-APR-15 19:40:00 to 09-APR-15 19:40:00 (CST-6)
Location: CORNWALL
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm Wind in AUDRAIN, MISSOURI
From 09-APR-15 15:32:00 to 09-APR-15 15:32:00 (CST-6)
Location: WORCHESTER
Magnitude: 75.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Thunderstorm winds broke several power poles. Also, several large tree limbs were blown down and a home sustained moderate damage to it roof and a couple of walls.

Hail in WASHINGTON, MISSOURI
From 09-APR-15 17:45:00 to 09-APR-15 17:45:00 (CST-6)
Location: ANTHONIES MILL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter