April 3, 2011, was an abnormally warm day, with high temperatues in the 80s and 90s. Record high temperatures were broken in several locations. A slow moving cold front, combined with a very strong spring storm system, produced widespread damaging thunderstorms, in the late afternoon and evening hours.
Supercellular thunderstorms, developed along and ahead of the cold front, as it sank southward across the area. These thunderstorms produced extremely large hail, greater than golf balls in many areas, as well as damaging winds of 60 to 80 mph.
The hardest hit areas, included the southern half of the Kansas City metropolitan area, especially in the Lee's Summit area. Numerous homes had various degrees of hail damage. Later in the evening, strong straight line winds in excess of 70 mph, produced significant damage in areas from Marshall, to Moberly, and Fayette.

Thunderstorm Wind in LAFAYETTE, MISSOURI
From 03-APR-11 20:59:00 to 03-APR-11 20:59:00 (CST-6)
Location: HIGGINSVILLE
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm wind gust was measured at 59 mph.

Thunderstorm Wind in LAFAYETTE, MISSOURI
From 03-APR-11 21:04:00 to 03-APR-11 21:04:00 (CST-6)
Location: CONCORDIA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A 5 foot in diameter tree was uprooted. Numerous one foot in diameter tree branches were broken off of trees. Thunderstorm wind gusts were estimated up to 60 mph.

Funnel Cloud in CARROLL, MISSOURI
From 03-APR-11 20:05:00 to 03-APR-11 20:05:00 (CST-6)
Location: SUGARTREE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A funnel cloud was observed just north of the Missouri River.

Thunderstorm Wind in CLAY, MISSOURI
From 03-APR-11 19:00:00 to 03-APR-11 19:00:00 (CST-6)
Location: OAKWOOD
Magnitude: 61.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm winds were estimated up to 70 mph. A tractor trailer overturned at the intersection of I-635 and Highway 9.

Thunderstorm Wind in CASS, MISSOURI
From 03-APR-11 20:15:00 to 03-APR-11 20:15:00 (CST-6)
Location: RAYMORE
Magnitude: 61.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

At the intersection of 195th Street and School Road, several power poles were reported to be leaning. One wooden power pole was split. Several outbuildings and one barn were reported destroyed or blown down. Thunderstorm wind gusts were estimated up to 70 mph.

Hail in CLAY, MISSOURI
From 03-APR-11 19:11:00 to 03-APR-11 19:11:00 (CST-6)
Location: LIBERTY MITCHELL ARP
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in CLAY, MISSOURI
From 03-APR-11 19:15:00 to 03-APR-11 19:15:00 (CST-6)
Location: KEARNEY
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in CLAY, MISSOURI
From 03-APR-11 19:17:00 to 03-APR-11 19:17:00 (CST-6)
Location: LIBERTY
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in SALINE, MISSOURI
From 03-APR-11 21:37:00 to 03-APR-11 21:37:00 (CST-6)
Location: MARSHALL
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm wind gust was measured at 70 mph.

Hail in CLAY, MISSOURI
From 03-APR-11 19:21:00 to 03-APR-11 19:21:00 (CST-6)
Location: KEARNEY
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in JACKSON, MISSOURI
From 03-APR-11 20:27:00 to 03-APR-11 20:27:00 (CST-6)
Location: GREENWOOD
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in JACKSON, MISSOURI
From 03-APR-11 20:29:00 to 03-APR-11 20:29:00 (CST-6)
Location: LEES SUMMIT
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in JACKSON, MISSOURI
From 03-APR-11 20:30:00 to 03-APR-11 20:30:00 (CST-6)
Location: GREENWOOD
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in CASS, MISSOURI
From 03-APR-11 20:29:00 to 03-APR-11 20:29:00 (CST-6)
Location: BELTON
Magnitude: 61.00 EG
Property damage: 7.50K
Crop damage: 0.00K
Reported by: Law Enforcement

A roof was reported blown off a trailer home. Thunderstorm wind gusts were estimated up to 70 mph.

Thunderstorm Wind in JOHNSON, MISSOURI
From 03-APR-11 20:57:00 to 03-APR-11 20:57:00 (CST-6)
Location: KINGSVILLE
Magnitude: 61.00 EG
Property damage: 12.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A roof was blown off a log style home, at NW 1871 RD, or just southeast of Kingsville.
Thunderstorm wind gusts were estimated up to 70 mph.

Thunderstorm Wind in JOHNSON, MISSOURI
From 03-APR-11 21:00:00 to 03-APR-11 21:00:00 (CST-6)
Location: PITTSVILLE
Magnitude: 52.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds were estimated up to 60 mph, and caused downed powerlines.

Hail in JACKSON, MISSOURI
From 03-APR-11 20:39:00 to 03-APR-11 20:39:00 (CST-6)
Location: LONE JACK BERRY ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in CASS, MISSOURI
From 03-APR-11 20:53:00 to 03-APR-11 20:53:00 (CST-6)
Location: PECULIAR ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in PUTNAM, MISSOURI
From 03-APR-11 18:23:00 to 03-APR-11 18:23:00 (CST-6)
Location: UNIONVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in PUTNAM, MISSOURI
From 03-APR-11 18:23:00 to 03-APR-11 18:23:00 (CST-6)
Location: MENDOTA
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in CALDWELL, MISSOURI
From 03-APR-11 18:46:00 to 03-APR-11 18:46:00 (CST-6)
Location: MIRABILE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in RAY, MISSOURI
From 03-APR-11 19:40:00 to 03-APR-11 19:40:00 (CST-6)
Location: DOCKERY
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in GENTRY, MISSOURI
From 03-APR-11 19:41:00 to 03-APR-11 19:41:00 (CST-6)
Location: ALBANY MEML ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in SCHUYLER, MISSOURI
From 03-APR-11 21:18:00 to 03-APR-11 21:18:00 (CST-6)
Location: LANCASTER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in HOWARD, MISSOURI
From 03-APR-11 21:55:00 to 03-APR-11 21:55:00 (CST-6)
Location: ARMSTRONG
Magnitude: 61.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A metal roof was blown off a house. Thunderstorm wind gusts were estimated up to 70 mph.

Thunderstorm Wind in RANDOLPH, MISSOURI
From 03-APR-11 22:13:00 to 03-APR-11 22:13:00 (CST-6)
Location: CLARK
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm wind gusts were estimated up to 70 mph.

Thunderstorm Wind in RANDOLPH, MISSOURI
From 03-APR-11 22:13:00 to 03-APR-11 22:13:00 (CST-6)
Location: CLARK
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A thunderstorm wind gust was measured at 70 mph.

Hail in JACKSON, MISSOURI
From 03-APR-11 20:35:00 to 03-APR-11 20:35:00 (CST-6)
Location: LEES SUMMIT
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in JACKSON, MISSOURI
From 03-APR-11 20:35:00 to 03-APR-11 20:35:00 (CST-6)
Location: GRAIN VLY ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in JACKSON, MISSOURI
From 03-APR-11 20:35:00 to 03-APR-11 20:35:00 (CST-6)
Location: GRAIN VLY ARPT
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in DAVIESS, MISSOURI
From 03-APR-11 20:10:00 to 03-APR-11 20:10:00 (CST-6)
Location: JAMESON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in JACKSON, MISSOURI
From 03-APR-11 20:14:00 to 03-APR-11 20:14:00 (CST-6)
Location: GRANDVIEW
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in JACKSON, MISSOURI
From 03-APR-11 20:20:00 to 03-APR-11 20:20:00 (CST-6)
Location: KANSAS CITY DOWNTOWN
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in SULLIVAN, MISSOURI
From 03-APR-11 18:48:00 to 03-APR-11 18:48:00 (CST-6)
Location: CORA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in SULLIVAN, MISSOURI
From 03-APR-11 18:52:00 to 03-APR-11 18:52:00 (CST-6)
Location: MILAN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in CALDWELL, MISSOURI
From 03-APR-11 18:53:00 to 03-APR-11 18:53:00 (CST-6)
Location: KINGSTON
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in RANDOLPH, MISSOURI
From 03-APR-11 22:10:00 to 03-APR-11 22:10:00 (CST-6)
Location: MOBERLY
Magnitude: 61.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A tractor trailer was blown over just south of town. A roof was blown off a house on Route JJ just west of town. Thunderstorm wind gusts were estimated up to 70 mph.

Thunderstorm Wind in SALINE, MISSOURI
From 03-APR-11 21:30:00 to 03-APR-11 21:30:00 (CST-6)
Location: MARSHALL
Magnitude: 61.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A tree was reported to have blown onto a car on Lincoln Avenue. A grain bin was also reported damaged. Thunderstorm wind gusts were estimated up to 70 mph.

Hail in NODAWAY, MISSOURI
From 03-APR-11 19:30:00 to 03-APR-11 19:30:00 (CST-6)
Location: DAWSONVILLE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in CASS, MISSOURI
From 03-APR-11 20:30:00 to 03-APR-11 20:30:00 (CST-6)
Location: LAKE WINNEBAGO
Magnitude: 61.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Thunderstorm wind gusts were estimated up to 70 mph. One injury was reported when a tree fell on a car. Buildings were reported damaged and trees were blown down, around Timber Street.

Hail in RAY, MISSOURI
From 03-APR-11 19:41:00 to 03-APR-11 19:41:00 (CST-6)
Location: RICHMOND
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in GRUNDY, MISSOURI
From 03-APR-11 20:00:00 to 03-APR-11 20:00:00 (CST-6)
Location: GALT
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in GRUNDY, MISSOURI
From 03-APR-11 20:05:00 to 03-APR-11 20:05:00 (CST-6)
Location: TRENTON ARPT
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in SULLIVAN, MISSOURI
From 03-APR-11 18:54:00 to 03-APR-11 18:54:00 (CST-6)
Location: GREEN CITY
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in CLAY, MISSOURI
From 03-APR-11 18:55:00 to 03-APR-11 18:55:00 (CST-6)
Location: GASHLAND
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in PLATTE, MISSOURI
From 03-APR-11 18:55:00 to 03-APR-11 18:55:00 (CST-6)
Location: PLATTE CITY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in PLATTE, MISSOURI
From 03-APR-11 18:58:00 to 03-APR-11 18:58:00 (CST-6)
Location: FERRELVIEW
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in SCHUYLER, MISSOURI
From 03-APR-11 18:58:00 to 03-APR-11 18:58:00 (CST-6)
Location: GREENTOP
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in BUCHANAN, MISSOURI
From 03-APR-11 19:00:00 to 03-APR-11 19:00:00 (CST-6)
Location: HALLS
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in PLATTE, MISSOURI
From 03-APR-11 19:00:00 to 03-APR-11 19:00:00 (CST-6)
Location: PLATTE CITY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CLAY, MISSOURI
From 03-APR-11 19:07:00 to 03-APR-11 19:07:00 (CST-6)
Location: LINDEN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in HOLT, MISSOURI
From 03-APR-11 19:08:00 to 03-APR-11 19:08:00 (CST-6)
Location: CRAIG
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in CLAY, MISSOURI
From 03-APR-11 19:17:00 to 03-APR-11 19:17:00 (CST-6)
Location: KEARNEY
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CLAY, MISSOURI
From 03-APR-11 19:20:00 to 03-APR-11 19:20:00 (CST-6)
Location: KEARNEY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in JACKSON, MISSOURI
From 03-APR-11 20:21:00 to 03-APR-11 20:21:00 (CST-6)
Location: LEES SUMMIT
Magnitude: 2.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail was reported at the intersection of Highway's 291 and 150.

Hail in JACKSON, MISSOURI
From 03-APR-11 20:22:00 to 03-APR-11 20:22:00 (CST-6)
Location: LEES SUMMIT
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CASS, MISSOURI
From 03-APR-11 20:25:00 to 03-APR-11 20:25:00 (CST-6)
Location: PLEASANT HILL ARPT
Magnitude: 3.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in JACKSON, MISSOURI
From 03-APR-11 20:25:00 to 03-APR-11 20:25:00 (CST-6)
Location: SOUTH LEE
Magnitude: 2.50 
Property damage: 7.00M
Crop damage: 0.00K
Reported by: Trained Spotter

This hail event, left over a thousand homes in Lee's Summit with various degrees of hail damage. Damage included roofs, gutters, and siding. Automobiles at area dealerships and private automobiles also suffered numerous reports of damage.

Hail in JACKSON, MISSOURI
From 03-APR-11 20:25:00 to 03-APR-11 20:25:00 (CST-6)
Location: LEES SUMMIT
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in JACKSON, MISSOURI
From 03-APR-11 20:26:00 to 03-APR-11 20:26:00 (CST-6)
Location: LAKE LOTAWANA
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee