F3 tornado, Decaturville, Missouri, May 4, 2003

1. F040 to 72 mph

   Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.

2. F173 to 112 mph

   Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.

3. F2113 to 157 mph

   Considerable damage. Roofs torn off well-built houses, frame homes shifted on their foundations, mobile homes destroyed, large trees snapped or uprooted, cars lifted off the ground.

4. F3158 to 206 mphthis tornado

   Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.

5. F4207 to 260 mph

   Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.

6. F5261 to 318 mph

   Incredible damage. Strong frame houses swept off their foundations, car-sized missiles thrown more than 100 meters, steel-reinforced concrete badly damaged, high-rise buildings deformed.

7. Unrated

   The survey recorded a tornado but could not put a number on it, most often because it crossed open country and damaged nothing a rating can be read from.

Rating

F3

Date

May 4, 2003

Touchdown

7:36 PM CDT (00:36 UTC)

Path length

14.0 miles (22.5 km)

Path width

400 yards (366 m)

Deaths

4

Injuries

27

Property damage

$5.0 million

County

Camden County

Touchdown point

37.900, -92.830

Lift-off point

37.980, -92.570

Record number

222

A long lived cyclic supercell that had a history of producing large and destructive tornadoes spawned another large tornado in rural south central Camden County. This tornado then tracked northeast into more populated areas south of Camdenton, where it claimed the lives of four local residents. Approximately 50 homes and outbuildings were destroyed along with significant agricultural loss. Roy Wright age 53, was deceased from being tossed from his mobile home as the tornado struck.George and Betty Jones ages 75 and 76, were taking cover in there bath tub while the tornado directly struck their frame home. They were deceased from being tossed into a field about three feet from each other. Grace Racy was taking shelter in her frame home while the tornado approached. She suffered a broken back along with other critical injuries from being tossed and hit by flying debris. She deceased about a month and a half after the event of complications from the injuries.

The deaths

4 direct deaths are recorded for this tornado, each with what Storm Data knows of it.

From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.

9 minutes of warning. NWS SGF issued a tornado warning for this county at 00:27 UTC, 9 minutes before the tornado touched down, in force until 01:30 UTC.

Every warning and watch covering the touchdown point that day, from the Iowa Environmental Mesonet's archive of National Weather Service products. Lead time is measured from the issue of the warning in force to the touchdown time in the database, both of which were recorded to the minute by different people.

The Storm Prediction Center had this point in a Moderate Risk, with a 0.15 chance of a tornado within 25 miles, in the hatched area where significant tornadoes were expected. The outlook in force was issued at 20:19 UTC.

SPC's Day 1 convective outlook as it stood when the tornado began, read at the touchdown point. The same archive is on the radar archive.

The radiosonde launches on either side of the tornado, from the nearest station that was launching then, drawn and analyzed the way Storm Lab does: the same diagram, the same parcel and shear definitions SPC's mesoanalysis uses.

Kaiser Mem (AIZ), 22 km from the path, in the two hours either side.

From the Iowa Environmental Mesonet's archive of airport observations.

The Springfield radar (KSGF), 100 km away, was scanning. The volume nearest the touchdown began at 00:33 UTC.

Open the radar archive at this moment, over the track

Reflectivity and velocity, decoded from the Level II archive in the browser. Volumes take a few seconds to open the first time.

The live radar over the trackEvery 2003 tornado in MissouriEvery tornado in Missouri since 1950Warnings in force in Missouri nowThe forecast where you are

80 more were confirmed in the United States that day.

All 81 of them

Ratings are the survey's, read off the damage rather than measured; the rating scale is above. Tornado counts rise through the record as reporting improved, so a year in the 1950s is not comparable with one today except for the strongest tornadoes, which were always noticed.

NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.