Thunderstorms erupted the evening of July 19th, along a stationary front that was draped across southern Iowa. The storms quickly moved south into north central Missouri. The storms took on a supercell character, due to strong directional and speed shear, coupled with unstable atmospheric conditions. An initial report of a funnel cloud was received just before 9 pm north of Mercer, Missouri, with numerous reports of funnel clouds, tornadoes, and wind damage.f the photographs.   Emergency management officials scoured the areas across which these supercell thunderstorms tracked, but found little damage.  Though eight separate reports of tornadoes were received, tornado damage of EF0 only could be confirmed approximately 5 miles east of Princeton, where a shed was destroyed, 3 miles southwest of Milan, where the roof was torn from a garage, and in the town of Harris, where a roof was blown off. Aside from these tornadoes, straight line winds destroyed two camper trailers, and blew in a garage door, 10 miles northeast of Atlanta.  In Atlanta, quarter sized hail was reported twice during the night.
The severe weather threat ended, only to be replaced by flash flooding, as thunderstorms continued to track across the same areas of northeast Missouri, during the overnight hours. Hardest hit was the Kirksville area, where radar estimated rainfall of 8 to 10 inches. A survey of both automated and manually read rain gages, measured anywhere from 3 to 6 inches across portions of Putnam, Sullivan, Adair, and Macon Counties, with at least one measurement of 9.13 inches being reported 1 mile south of Kirksville. Other reports include: 3.39 inches 2 miles north of Moberly, 3.46 inches in Atlanta, 3.70 inches 5 miles northeast of Mercer, 4.33 inches near Lancaster, 4.53 inches at the official NWS observing site in Kirksville, 4.65 inches in Milan, 4.80 inches in Green City, 5.10 inches near Unionville, 6.19 inches in Novinger and 6.01 inches in Livonia. The heavy rains caused numerous creeks and streams to exceed flood stage across the area.

Flash Flood in MACON, MISSOURI
From 20-JUL-10 00:18:00 to 20-JUL-10 06:18:00 (CST-6)
Location: LA PLATA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Major street flooding was observed, with up to 12 inches of running water.

Flash Flood in MACON, MISSOURI
From 20-JUL-10 00:43:00 to 20-JUL-10 06:43:00 (CST-6)
Location: ATLANTA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Main Street had up to six inches of water.

Flash Flood in MACON, MISSOURI
From 20-JUL-10 00:43:00 to 20-JUL-10 06:43:00 (CST-6)
Location: SUE CITY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flash flooding was reported in this area.

Flash Flood in ADAIR, MISSOURI
From 20-JUL-10 01:14:00 to 20-JUL-10 07:14:00 (CST-6)
Location: MILLARD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Highway 63 had up to 6 inches of running water.

Flash Flood in ADAIR, MISSOURI
From 20-JUL-10 01:25:00 to 20-JUL-10 07:25:00 (CST-6)
Location: KIRKSVILLE
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Numerous roads were reported impassable in Kirksville, due to flooding. One car was reported submerged.

Flash Flood in ADAIR, MISSOURI
From 20-JUL-10 02:30:00 to 20-JUL-10 08:30:00 (CST-6)
Location: CONNELSVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

State Highway 149 was closed due to flooding.

Flash Flood in ADAIR, MISSOURI
From 20-JUL-10 02:30:00 to 20-JUL-10 08:30:00 (CST-6)
Location: FEGLEY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

State Highway B was closed due to flooding along Hazel Creek.

Flash Flood in MACON, MISSOURI
From 20-JUL-10 02:46:00 to 20-JUL-10 08:46:00 (CST-6)
Location: LA PLATA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Nine to twelve inches of running water, was reported on Highway 156.

Flash Flood in PUTNAM, MISSOURI
From 20-JUL-10 04:00:00 to 20-JUL-10 04:00:00 (CST-6)
Location: UNIONVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

State Highway Y was closed due to flooding along Blackbird Creek.

Flash Flood in PUTNAM, MISSOURI
From 20-JUL-10 04:00:00 to 20-JUL-10 10:00:00 (CST-6)
Location: POWERSVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

State Highway M was closed due to flooding along Medicine Creek.

Flash Flood in PUTNAM, MISSOURI
From 20-JUL-10 04:00:00 to 20-JUL-10 10:00:00 (CST-6)
Location: MENDOTA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

State Highway 129 along Shoal Creek, was closed due to flooding.

Flash Flood in SCHUYLER, MISSOURI
From 20-JUL-10 04:30:00 to 20-JUL-10 10:30:00 (CST-6)
Location: QUEEN CITY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

State Highway H was closed at Elm Creek, due to flash flooding.

Flash Flood in MACON, MISSOURI
From 20-JUL-10 05:20:00 to 20-JUL-10 11:20:00 (CST-6)
Location: LA CROSSE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

State Highway 3 was closed due to flooding.

Flash Flood in ADAIR, MISSOURI
From 20-JUL-10 05:30:00 to 20-JUL-10 11:30:00 (CST-6)
Location: KIRKSVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

State Highway 11 was closed due to flooding, along State Creek.

Flash Flood in ADAIR, MISSOURI
From 20-JUL-10 06:45:00 to 20-JUL-10 11:45:00 (CST-6)
Location: GIBBS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

State Highway E was closed due to flooding, along Bear Creek.

Flash Flood in MACON, MISSOURI
From 20-JUL-10 07:15:00 to 20-JUL-10 13:15:00 (CST-6)
Location: MACON ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

State Highway PP was closed due to flooding, along the Salt River.

Funnel Cloud in MERCER, MISSOURI
From 19-JUL-10 19:56:00 to 19-JUL-10 19:56:00 (CST-6)
Location: SOUTH LINEVILLE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A funnel cloud was observed 7 miles northeast of Browning.

Hail in SULLIVAN, MISSOURI
From 19-JUL-10 21:32:00 to 19-JUL-10 21:32:00 (CST-6)
Location: MILAN
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in MACON, MISSOURI
From 19-JUL-10 23:52:00 to 19-JUL-10 23:52:00 (CST-6)
Location: ATLANTA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in ADAIR, MISSOURI
From 20-JUL-10 00:03:00 to 20-JUL-10 00:03:00 (CST-6)
Location: KIRKSVILLE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Tornado in MERCER, MISSOURI
From 19-JUL-10 20:26:00 to 19-JUL-10 20:27:00 (CST-6)
Location: PRINCETON
Tornado F-scale: EF0
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Trained Spotter

A brief EF0 tornado touchdown was observed 5 miles east of Princeton at 20:26 CST, and lifted at 20:27 CST. The only damage observed, was a destroyed shed.

Thunderstorm Wind in SULLIVAN, MISSOURI
From 19-JUL-10 21:32:00 to 19-JUL-10 21:32:00 (CST-6)
Location: MILAN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A large tree was reported down. Thunderstorm wind gusts were estimated to 60 mph.

Thunderstorm Wind in ADAIR, MISSOURI
From 20-JUL-10 00:18:00 to 20-JUL-10 00:18:00 (CST-6)
Location: (IRK)KIRKSVILLE MUNI
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in MACON, MISSOURI
From 20-JUL-10 00:30:00 to 20-JUL-10 00:30:00 (CST-6)
Location: SUE CITY
Magnitude: 61.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Two fifth wheel campers were reported destroyed. A garage door was blown in, and a one foot diameter tree was knocked down. Thunderstorm wind gusts were estimated up to 70 mph.

Funnel Cloud in SULLIVAN, MISSOURI
From 19-JUL-10 20:58:00 to 19-JUL-10 20:58:00 (CST-6)
Location: OSGOOD
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A funnel cloud was observed 2 miles northeast of Osgood.

Funnel Cloud in SULLIVAN, MISSOURI
From 19-JUL-10 21:31:00 to 19-JUL-10 21:31:00 (CST-6)
Location: HUMPHREYS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A funnel cloud was observed 10 miles east southeast of Humphreys.

Funnel Cloud in SULLIVAN, MISSOURI
From 19-JUL-10 21:50:00 to 19-JUL-10 21:50:00 (CST-6)
Location: MILAN
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A funnel cloud was observed 5 miles southeast of Milan.

Funnel Cloud in SULLIVAN, MISSOURI
From 19-JUL-10 21:56:00 to 19-JUL-10 21:56:00 (CST-6)
Location: BROWNING
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A funnel cloud was observed 7 miles northeast of Browning.

Tornado in SULLIVAN, MISSOURI
From 19-JUL-10 20:42:00 to 19-JUL-10 20:43:00 (CST-6)
Location: HARRIS
Tornado F-scale: EF0
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A brief EF0 tornado touchdown was observed in Harris at 20:42 CST. The tornado lifted at 20:43 CST. A residential roof was blown off.

Funnel Cloud in LINN, MISSOURI
From 19-JUL-10 22:16:00 to 19-JUL-10 22:16:00 (CST-6)
Location: NEW BOSTON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A funnel cloud was observed 5 miles northwest of New Boston.

Tornado in SULLIVAN, MISSOURI
From 19-JUL-10 21:22:00 to 19-JUL-10 21:23:00 (CST-6)
Location: MILAN
Tornado F-scale: EF0
Property damage: 0.40K
Crop damage: 0.00K
Reported by: Storm Chaser

A brief EF0 tornado touchdown was reported at 21:22 CST, 3 miles southwest of Milan. The tornado lifted at 21:23 CST. A roof was blown off a garage.