A stalled frontal boundary over the Ozarks and an upper trough over the region resulted in the development of several rounds of thunderstorms which produced very heavy rainfall. There were a few strong to severe thunderstorms that produced marginal severe hail and one weak tornado.

Flash Flood in POLK, MISSOURI
From 29-APR-12 12:02:00 to 29-APR-12 13:02:00 (CST-6)
Location: RIMBY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

MODOT reported water over State Highway HH at Ingles Creek.

Flash Flood in VERNON, MISSOURI
From 29-APR-12 21:38:00 to 29-APR-12 22:38:00 (CST-6)
Location: ELLIS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A section of Highway 54 was flooded approximately one mile east of Deerfield as Dry Wood Creek flooded over the highway.

Flash Flood in VERNON, MISSOURI
From 29-APR-12 22:27:00 to 29-APR-12 23:27:00 (CST-6)
Location: DEERFIELD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Both eastbound and westbound lanes of Highway 54 were closed due to flooding of Dry Wood Creek.

Flash Flood in VERNON, MISSOURI
From 29-APR-12 22:27:00 to 29-APR-12 23:27:00 (CST-6)
Location: HORTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Highway 71 north of Nevada was closed due to flooding.

Flash Flood in CEDAR, MISSOURI
From 29-APR-12 22:39:00 to 29-APR-12 23:39:00 (CST-6)
Location: EL DORADO SPGS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several streets were flooded and impassable at El Dorado Springs.

Flash Flood in BARTON, MISSOURI
From 30-APR-12 00:39:00 to 30-APR-12 01:39:00 (CST-6)
Location: MINDENMINES
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A portion of Highway M was flooded.

Flash Flood in BARTON, MISSOURI
From 30-APR-12 00:39:00 to 30-APR-12 01:39:00 (CST-6)
Location: IANTHA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several roads in Iantha were flooded and impassable.

Flash Flood in VERNON, MISSOURI
From 30-APR-12 03:27:00 to 30-APR-12 04:27:00 (CST-6)
Location: NEVADA
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A section of Panama Road was washed out.

Flash Flood in VERNON, MISSOURI
From 30-APR-12 03:27:00 to 30-APR-12 04:27:00 (CST-6)
Location: NEVADA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

South Spring Street was closed due to flooding.

Flash Flood in VERNON, MISSOURI
From 30-APR-12 03:27:00 to 30-APR-12 04:27:00 (CST-6)
Location: ELLIS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Highway 54 was closed at County Road 850 due to flooding.

Flash Flood in VERNON, MISSOURI
From 30-APR-12 03:27:00 to 30-APR-12 04:27:00 (CST-6)
Location: HORTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Highway 71 was closed due to flooding.

Flood in MORGAN, MISSOURI
From 30-APR-12 07:00:00 to 30-APR-12 08:00:00 (CST-6)
Location: FLORENCE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Route B was flooded at Gabriel Creek.

Flood in BARTON, MISSOURI
From 30-APR-12 07:10:00 to 30-APR-12 08:10:00 (CST-6)
Location: HANNON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

A low water crossing on Route K was flooded.

Flood in BARTON, MISSOURI
From 30-APR-12 07:15:00 to 30-APR-12 08:15:00 (CST-6)
Location: BOSTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Highway 126 was closed to due flooding.

Flood in BARTON, MISSOURI
From 30-APR-12 08:55:00 to 30-APR-12 09:55:00 (CST-6)
Location: MINDENMINES
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Route M was closed due to flooding.

Flood in VERNON, MISSOURI
From 30-APR-12 09:28:00 to 30-APR-12 10:28:00 (CST-6)
Location: REO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Route KK was closed due to flooding.

Hail in DADE, MISSOURI
From 29-APR-12 05:20:00 to 29-APR-12 05:20:00 (CST-6)
Location: CEDARVILLE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Hail in CEDAR, MISSOURI
From 29-APR-12 05:36:00 to 29-APR-12 06:36:00 (CST-6)
Location: STOCKTON RESV SOUTH
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Tornado in HICKORY, MISSOURI
From 30-APR-12 00:56:00 to 30-APR-12 00:58:00 (CST-6)
Location: WEAUBLEAU
Tornado F-scale: EF0
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A weak tornado briefly touched down between Panther Creek along Farm Road 11 and Highway 123 in far southwest Hickory County. The tornado uprooted trees and destroyed a barn. Maximum winds were estimated at 70 mph.

Hail in GREENE, MISSOURI
From 27-APR-12 09:30:00 to 27-APR-12 09:30:00 (CST-6)
Location: WILLARD
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Hail in GREENE, MISSOURI
From 27-APR-12 09:46:00 to 27-APR-12 09:46:00 (CST-6)
Location: EBENEZER
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in GREENE, MISSOURI
From 27-APR-12 09:55:00 to 27-APR-12 09:55:00 (CST-6)
Location: FAIR GROVE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in VERNON, MISSOURI
From 27-APR-12 20:08:00 to 27-APR-12 20:08:00 (CST-6)
Location: NEVADA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in CEDAR, MISSOURI
From 27-APR-12 20:42:00 to 27-APR-12 20:42:00 (CST-6)
Location: COAL HILL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in CEDAR, MISSOURI
From 27-APR-12 20:36:00 to 27-APR-12 20:36:00 (CST-6)
Location: EL DORADO SPGS
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in WEBSTER, MISSOURI
From 27-APR-12 10:44:00 to 27-APR-12 10:44:00 (CST-6)
Location: ST LUKE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS