Widespread showers and thunderstorms developed ahead of a weather system.  Significant rainfall, as well as tornadoes, damaging winds and large hail occurred with the stronger storms.

Hail in MONITEAU, MISSOURI
From 17-APR-13 16:06:00 to 17-APR-13 16:06:00 (CST-6)
Location: CLARKSBURG
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in MONITEAU, MISSOURI
From 17-APR-13 16:22:00 to 17-APR-13 16:22:00 (CST-6)
Location: JAMESTOWN
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BOONE, MISSOURI
From 17-APR-13 16:35:00 to 17-APR-13 16:35:00 (CST-6)
Location: MC BAINE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in BOONE, MISSOURI
From 17-APR-13 16:45:00 to 17-APR-13 17:05:00 (CST-6)
Location: COLUMBIA
Magnitude: 2.75 
Crop damage: 0.00K
Reported by: Trained Spotter

Large hail fell across Columbia with the largest stones as big as baseballs.

Hail in MONROE, MISSOURI
From 17-APR-13 16:40:00 to 17-APR-13 16:40:00 (CST-6)
Location: PARIS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in SHELBY, MISSOURI
From 17-APR-13 12:00:00 to 17-APR-13 12:00:00 (CST-6)
Location: SHELBINA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in AUDRAIN, MISSOURI
From 17-APR-13 17:15:00 to 17-APR-13 17:15:00 (CST-6)
Location: ORTIZ
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MONROE, MISSOURI
From 17-APR-13 17:10:00 to 17-APR-13 17:10:00 (CST-6)
Location: NORTH FORK
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LEWIS, MISSOURI
From 17-APR-13 17:39:00 to 17-APR-13 17:39:00 (CST-6)
Location: MAYWOOD
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in BOONE, MISSOURI
From 17-APR-13 17:20:00 to 17-APR-13 17:20:00 (CST-6)
Location: WOODLANDVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tornado in MONROE, MISSOURI
From 17-APR-13 16:31:00 to 17-APR-13 16:41:00 (CST-6)
Location: TULIP
Tornado F-scale: EF1
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado briefly touchdown in southwest Monroe County a mile north of the intersection of Highways M and C on Highway C. Six power poles were snapped at the base of the pole. Width of the damage in this location was 100 yards and damage was rated EF1.  Further northeast...the tornado briefly touched down on County Road 840 just east of intersection with County Road 819.  A barn was severely damaged. Debris from the barn was tossed to the east about 100 yards. The tornado continued to travel to the northeast...where it briefly touched down again...just south of Highway AA...just west of intersection with County Road 835. Two machine sheds in this location sustained minor to moderate damage.  Also...a large barn sustained significant damage where the south part of the barn was removed.  Damage width in this area was 70 yards wide. Damage was rated low end EF1. Further to the east...on Highway AA...just west of intersection with County Road 857...numerous large trees were snapped at the base and showed a convergent damage pattern. Width of damage in this area was over 60 yards wide and the damage was only on the north side of Highway AA. Damage in this location was rated low end EF1.  The tornado continued to travel to the northeast and briefly touched down one last time just west of Highway 15...two miles south of Paris, Missouri.  Three machine sheds sustained significant damage with debris being thrown 300 to 400 yards to the north northwest. Damage was rated EF1 in this location.  Overall the path length was 7.45 miles...with a max damage width of 70 yards. The tornado was rated EF1.

Thunderstorm Wind in MONROE, MISSOURI
From 17-APR-13 16:31:00 to 17-APR-13 16:31:00 (CST-6)
Location: TULIP
Magnitude: 65.00 EG
Crop damage: 0.00K
Reported by: NWS Storm Survey

Structural damage occurred at a farmstead southwest of the corner of Highways M and C.  A few large panels from a machine shed were tossed to the east northeast.  A few large trees were snapped near the base on the northeast corner of Highways M and C. This damage was caused by straight line winds around 75 mph.

Tornado in MONROE, MISSOURI
From 17-APR-13 16:35:00 to 17-APR-13 16:36:00 (CST-6)
Location: PARIS
Tornado F-scale: EF0
Crop damage: 0.00K
Reported by: NWS Storm Survey

Another tornado, about half a mile south of the first tornado, briefly touched down on County Road  835, half a mile north of the intersection with County Road 840.  A barn sustained minor to moderate damage, where 2x4 missiles were driven into the roof of the barn.  Width of damage was 30 to 40 yards wide with a path length of less than a tenth of a mile.  The tornado was rated EF0.

Flash Flood in IRON, MISSOURI
From 18-APR-13 12:45:00 to 18-APR-13 17:55:00 (CST-6)
Location: VIBURNUM
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Up to four inches of rain fell in a short amount of time over portions of Iron County causing flash flooding.  Several roads were flooded.  Highway 49 just south of Viburnum was washed away by the flood waters.  Also, Highway 21 was impassable in spots.

Tornado in MONROE, MISSOURI
From 17-APR-13 17:00:00 to 17-APR-13 17:01:00 (CST-6)
Location: INDIAN CREEK
Tornado F-scale: EF0
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado briefly touched down on the south side of U.S. Highway 24, about 4 miles northeast of Stoutsville.  It snapped large tree branches about a third of the way up and other branches were snapped half way up.  Damage width in this area was about 60 yards wide.  As it traveled to the northeast, it took the metal panel roofing off of the north side of a medium size out building, before lifting and dissipating. Overall the path length was 0.45 miles with a max path width of 60 yards.  It was rated EF0.

Thunderstorm Wind in RALLS, MISSOURI
From 17-APR-13 17:11:00 to 17-APR-13 17:11:00 (CST-6)
Location: HASSARD
Magnitude: 70.00 EG
Crop damage: 0.00K
Reported by: NWS Storm Survey

Two grain bins, located on Highway J just north of Hazard Lane, in far northwestern Ralls County, sustained minor damage.  The grain elevator sustained minor damage as well.  There was minor tree limb damage that extended for about a mile south of the grain bins.

Thunderstorm Wind in RALLS, MISSOURI
From 17-APR-13 17:20:00 to 17-APR-13 17:20:00 (CST-6)
Location: RENSSELAER
Magnitude: 65.00 EG
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds blew a wooden swing set approximately 100 yards.

Thunderstorm Wind in MARION, MISSOURI
From 17-APR-13 17:20:00 to 17-APR-13 17:20:00 (CST-6)
Location: WEST ELY
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds blew over three semis on U.S. Highway 36, about 5 miles west of Hannibal.  No injuries were reported.

Thunderstorm Wind in MARION, MISSOURI
From 17-APR-13 17:35:00 to 17-APR-13 17:35:00 (CST-6)
Location: PALMYRA
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Thunderstorm winds blew down numerous large tree limbs north of Palmyra.

Flash Flood in JEFFERSON, MISSOURI
From 18-APR-13 09:15:00 to 18-APR-13 13:30:00 (CST-6)
Location: DE SOTO ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Up to five inches of rain fell in a 24 hour period.  This caused flash flooding on Joachim Creek in DeSoto.  The creek rose quickly and numerous roads on the east side of town were flooded.  The water rose high enough that the fire station on East Miller Street had over a foot of water in it throughout the offices and engine room.  About 125 homes were affected by the flash flooding.  Also, an 80 year old woman drove into the flood waters on Veterans Drive.  Despite attempts by emergency workers to block the car, it plunged into the rushing creek with the woman inside.  Several hours later the water receded enough for the emergency workers to find her body in the vehicle a little ways downstream.

Flash Flood in SHELBY, MISSOURI
From 17-APR-13 18:46:00 to 18-APR-13 14:30:00 (CST-6)
Location: MAUD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Up to five inches of rain fell over Shelby County in a short amount of time causing flash flooding.  Numerous roads were flooded including Highway 151 just north of Clarence.

Flash Flood in LEWIS, MISSOURI
From 18-APR-13 04:00:00 to 18-APR-13 14:30:00 (CST-6)
Location: STEFFENVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Up to five inches of rain fell in a short amount of time over Lewis County causing flash flooding.  Numerous roads were flooded including the intersection of Route D and Highway 156, just east of Newark.

Thunderstorm Wind in MONROE, MISSOURI
From 17-APR-13 17:07:00 to 17-APR-13 17:08:00 (CST-6)
Location: MONROE CITY REGNL AR
Magnitude: 78.00 EG
Crop damage: 0.00K
Reported by: NWS Storm Survey

Just south of Monroe City, along U.S. Highway 24, several power poles were snapped and tree damage was observed.  Cedar and oak trees were damaged.  On the far southwest portions of Monroe City, nine homes sustained roof damage where shingles were removed.  Also, several large tree limbs, between three and nine inches in diameter were blown down.  One large tree was blown down, crushing a medium sized storage shed.  In town, the roof of a retail store was removed and displaced approximately 80 yards to the east northeast.  Another nearby business sustained minor roof damage.  Also, 3 large storage sheds sustained minor roof damage.  Additional tree damage was observed on the east side of Monroe City in a residential area.

Hail in BOONE, MISSOURI
From 17-APR-13 17:10:00 to 17-APR-13 17:10:00 (CST-6)
Location: WOODLANDVILLE
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter