May 29, 2004: Tornadoes across Northwest Missouri

Preliminary Tracks of Tornadoes on May 29, 2004.  Red triangles and grey lines indicate the paths of the tornadoes.  Preliminary F-Scale ratings are also noted. Preliminary Tracks of Tornados on May 29, 2004. Red triangles and grey lines indicate the paths of the tornadoes. Preliminary F-Scale ratings are also noted.

The National Weather service conducted an air damage survey on June 1, to compliment ground damage surveys that were performed across portions of northern Missouri on Sunday, May 29, in order to assess the strength and number of tornadoes which struck on Saturday evening. The results of both surveys indicate that a total of nine tornadoes touched down across portions of Platte, Clinton, De Kalb, Daviess, Harrison, Grundy and Mercer counties, with the strongest rated F4 on the Fujita damage scale just east of Weatherby, Missouri.

The following is a chronological listing of the nine tornadoes which have been confirmed, with the time and location of the initial touchdown and Fujita rating. Detailed assessments are located below this table:
Time               Location           County         F Scale
622 pm CDT 4 W Camden Point Platte F3
735 pm CDT 1 S Gower Clinton F0
805 pm CDT Agency Buchanan F0
840 pm CDT 1 SE Plattsburg Clinton F1
940 pm CDT 2 SSE Osborn De Kalb F2
1030 pm CDT 2 S Weatherby De Kalb F4
1040 pm CDT 3 W Pattonsburg De Kalb F0
1118 pm CDT 4 E Coffey Daviess F0
1146 pm CDT 4 W Spickard Grundy F0

The first tornado of the day developed in northern Platte County, approximately 4 miles west of Camden Point just west of Route 371, between 371 and P highway west of the "T" intersection of Route 371 and State Route E. This tornado grew rapidly in size to nearly a quarter mile wide, although the actual damage path appeared to be restricted to around 100 yards. The tornado moved northeast, and then turned quickly north and eventually north-northwest, staying to the west of Interstate 29. The tornado roped out and dissipated about three miles southeast of De Kalb. The tornado produced an isolated incident of F3 damage, where an axle from a heavy truck was thrown nearly 300 yards and a barn was destroyed.

A weak tornado was observed by spotters and the media that touched down in Buchanan County, southwest of Agency. There may have been a number of small tornadoes in this area, but little damage was found so an F0 rating has been assigned to this storm. Storm chaser video also confirms a weak tornado touchdown just south of Gower, Missouri at around 7:35 p.m.

Another significant tornado developed just southeast of Plattsburg, where aerial damage survey data indicated a strong convergent damage pattern in a large area of trees. The tornado moved slowly to the north-northeast to near Osborn. The tornado produced F1 damage south of Osborn, and F0 damage in the city itself before dissipating near Osborn.

As the parent thunderstorm developed a new circulation center about a half hour after this second significant tornado, it produced a new tornado, which appears to have developed just south-southeast of Osborn around 9:40 p.m. The tornado produced an area of F2 damage just east of Osborn near the intersection of U.S. Highway 36 and SE Hedge Road. As the tornado tracked to the north and east, it tracked across State Route C and quickly dissipated. This storm would go on to spawn the next tornado, which would prove to be the killer tornado.

The killer tornado of the evening developed in De Kalb County around 10:30 p.m., approximately two miles south of Weatherby, near the intersection of Route EE and SE Dallas. From this location, north-northeast about one mile to the intersection of EE and Highway 6, the tornado produced an area of F4 category damage. A frame home was totally destroyed, and two deaths occurred in this home. A mobile home was also destroyed, where a third individual lost his life to the tornado. The tornado then continued to track north-northeast to near 110th St. and Route E. At this location, the tornado was rated F2 in intensity, and the tornado reached its maximum path width of nearly a half mile. The track of the tornado continued north-northeast to west of Pattonsburg, where the aerial damage survey indicated that a satellite tornado touched down to the west of the larger tornado. The large tornado stayed on the ground into Harrison County, and the damage path narrowed considerably before the tornado dissipated about 3 miles south of Bethany. This tornado track was not as long of a track as first though, thus this tornado was on the ground for about 40 minutes, and covered a track length of approximately 20 miles.

The last two tornadoes touched down between 11 p.m. and midnight. One tornado touched down approximately four miles east of Coffey around 11:18 p.m. and tracked northeast to just west of Melbourne in Harrison County. The second tornado touched down about four miles west of Spickard and tracked northeast to just west of Grove in Mercer County. Both tornadoes remained mainly over open country, and both were rated F0 due to lack of reported damage.

Graphical maps of these tornado paths are posted on the Pleasant Hill web site at www.crh.noaa.gov/eax.. The National Weather Service wishes to thank KMBC-TV in Kansas City for providing the resources to complete an aerial survey of the tornadoes of May 29, 2004.

Complete Listing of Storm Reports

 


 

May 29, 2004: Tornadoes Across Northwest Missouri.

Tornado Images Over Rural Northern Platte County, MO.
Photos Courtesy: Brian Carter - Buchanan County, MO Emergency Management.

Tornado Images Over Rural Northern Platte County, MO.  Photos Courtesy: Brian Carter - Buchanan County, MO Emergency Management. Click for larger view. Tornado Images Over Rural Northern Platte County, MO.  Photos Courtesy: Brian Carter - Buchanan County, MO Emergency Management. Click for larger view. Tornado Images Over Rural Northern Platte County, MO.  Photos Courtesy: Brian Carter - Buchanan County, MO Emergency Management. Click for larger view. Tornado Images Over Rural Northern Platte County, MO.  Photos Courtesy: Brian Carter - Buchanan County, MO Emergency Management. Click for larger view. Tornado Images Over Rural Northern Platte County, MO.  Photos Courtesy: Brian Carter - Buchanan County, MO Emergency Management. Click for larger view.
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