An approaching shortwave trough and accompanying surface low tracked northeast of Arkansas and into southern Missouri. A modest instability and high shear environment with very moist airmass supported widespread convection and a few supercells. A tornadic supercell tracked northeast from north central Arkansas  through Ozark and Howell counties in Missouri producing five tornadoes.

Hail in HOWELL, MISSOURI
From 30-APR-10 18:05:00 to 30-APR-10 18:05:00 (CST-6)
Location: BURNHAM
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in STONE, MISSOURI
From 30-APR-10 15:00:00 to 30-APR-10 15:00:00 (CST-6)
Location: REEDS SPG
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Post Office

Hail in WRIGHT, MISSOURI
From 30-APR-10 15:50:00 to 30-APR-10 15:50:00 (CST-6)
Location: GROVESPRING
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Post Office

Hail in HOWELL, MISSOURI
From 30-APR-10 19:00:00 to 30-APR-10 19:00:00 (CST-6)
Location: WEST PLAINS
Magnitude: 1.50 
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Tornado in OZARK, MISSOURI
From 30-APR-10 17:12:00 to 30-APR-10 17:14:00 (CST-6)
Location: HARDENVILLE
Tornado F-scale: EF1
Property damage: 80.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

An EF-1 tornado produced 90 to 100 mph winds uprotting numerous trees, damaging several outbuildings, a horse trailer, and downing power lines and poles.

Tornado in OZARK, MISSOURI
From 30-APR-10 17:14:00 to 30-APR-10 17:15:00 (CST-6)
Location: HARDENVILLE
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 1.00K
Reported by: NWS Storm Survey

An EF-0 tornado briefly touched down uprooting trees.

Hail in LAWRENCE, MISSOURI
From 30-APR-10 13:15:00 to 30-APR-10 13:15:00 (CST-6)
Location: ROUND GROVE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Post Office

Hail in BARRY, MISSOURI
From 30-APR-10 13:48:00 to 30-APR-10 13:48:00 (CST-6)
Location: EXETER
Magnitude: 1.75 
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Hail in BARRY, MISSOURI
From 30-APR-10 14:00:00 to 30-APR-10 14:00:00 (CST-6)
Location: PURDY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in GREENE, MISSOURI
From 30-APR-10 14:05:00 to 30-APR-10 14:05:00 (CST-6)
Location: PHENIX
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in BARRY, MISSOURI
From 30-APR-10 14:25:00 to 30-APR-10 14:25:00 (CST-6)
Location: SCHOLTEN
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in BARRY, MISSOURI
From 30-APR-10 14:40:00 to 30-APR-10 14:40:00 (CST-6)
Location: SELIGMAN
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Tornado in OZARK, MISSOURI
From 30-APR-10 17:24:00 to 30-APR-10 17:40:00 (CST-6)
Location: LAWNDALE
Tornado F-scale: EF1
Property damage: 875.00K
Crop damage: 25.00K
Reported by: NWS Storm Survey

An EF-1 tornado with maximum winds estimated at 110 mph damaged 30 homes, some severely, along with numerous barns and other outbuildings. Hundreds of oaks trees were damaged including many that were uprooted or snapped.

Tornado in OZARK, MISSOURI
From 30-APR-10 16:52:00 to 30-APR-10 17:12:00 (CST-6)
Location: PONTIAC
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 10.00K
Reported by: NWS Storm Survey

An EF-1 tornado with winds estimated at 100 mph crossed the Missouri and Arkansas state line south of Pontiac, Missouri. Damage in Missouri consisted of the uprroting and snapping of trees.

Thunderstorm Wind in OZARK, MISSOURI
From 30-APR-10 16:50:00 to 30-APR-10 16:55:00 (CST-6)
Location: PONTIAC
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds downed numerous large trees.

Hail in STONE, MISSOURI
From 30-APR-10 14:55:00 to 30-APR-10 14:55:00 (CST-6)
Location: KIMBERLING CITY
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in STONE, MISSOURI
From 30-APR-10 14:55:00 to 30-APR-10 14:55:00 (CST-6)
Location: CAPE FAIR
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in GREENE, MISSOURI
From 30-APR-10 15:00:00 to 30-APR-10 15:00:00 (CST-6)
Location: MENTOR
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Hail in CHRISTIAN, MISSOURI
From 30-APR-10 15:14:00 to 30-APR-10 15:14:00 (CST-6)
Location: HIGHLANDVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in OZARK, MISSOURI
From 30-APR-10 17:37:00 to 30-APR-10 17:37:00 (CST-6)
Location: DORA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in HOWELL, MISSOURI
From 30-APR-10 18:07:00 to 30-APR-10 18:07:00 (CST-6)
Location: WILLOW SPGS
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Tornado in HOWELL, MISSOURI
From 30-APR-10 18:05:00 to 30-APR-10 18:10:00 (CST-6)
Location: BURNHAM
Tornado F-scale: EF1
Property damage: 750.00K
Crop damage: 25.00K
Reported by: NWS Storm Survey

An EF-1 tornado with maximum winds of 110 mph produced moderate to severe damage to several homes and a restrurant located near the intersection of Missouri Highways 60 and 63 (Hillbilly Junction). Severe damage also occurred at the Willow Springs water treatment plant. The path width varied between a quarter and three quarters of a mile.