Tornadoes · United States · Missouri · 1926

F3 tornado, S Competition/Big Piney, MO, November 25, 1926

This F3 tornado struck S Competition and Big Piney, MO on November 25, 1926, touching down at 5:45 PM CST. Its path ran 44.7 miles and was up to 150 yards wide. It killed 1 person and injured 40. Before 1950 the record is Thomas P. Grazulis’s list of significant tornadoes: those rated F2 or stronger, and weaker ones that killed somebody.

The rating scale

Tracks are drawn in the color of the rating. Grazulis rated these tornadoes on the Fujita scale decades after the fact, from written accounts of the damage. The scale rates the damage rather than measuring the wind: the speeds are what that damage is taken to imply.

  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

    Grazulis gave no rating: the surviving account records a tornado without enough about the damage to rate it. Almost all of these are before 1880.

The record

Rating
F3, assigned by Grazulis from the accounts
Date
November 25, 1926
Time
5:45 PM CST (23:45 UTC)
Places named
S Competition/Big Piney, MO
Path length
44.7 miles (71.9 km)
Path width
150 yards (137 m)
Deaths
1
Injuries
40
Counties crossed today
Wright, Laclede, Texas, Pulaski and Phelps counties
Drawn from
37.42, -92.45
Drawn to
37.85, -91.84
Record
Tornado Archive TPG1154

How the track was drawn

Tornado Archive drew the path as a straight line from the first place Grazulis names to the last. The tornado itself will not have run straight, and the line can miss a town it hit. The counties are today's, and many had other lines, or did not exist, in 1926.

What is not here

The warnings
The Weather Bureau issued its first public tornado forecasts in 1952. The warning archive this site reads begins in 1986.
The outlook
SPC's archive of convective outlooks begins in 1987.
The radar
Weather radar did not watch storms until after the Second World War. The radar archive this site reads begins in 1991.
The Weather Service's narrative
The Storm Events Database, with its narratives and casualty records, begins in 1950.
A damage survey
The Fujita scale dates from 1971, so no tornado before it was rated at the time. The rating here is Grazulis’s, from the accounts.
A sounding
The upper-air archive this site reads begins in the middle 1940s.
Surface observations
No airport observations within 150 km of the path survive in the archive for those hours.

The other tornadoes of November 25, 1926

17 more significant tornadoes are on record that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
November 254:00 PM CSTF2W Belleville, AR10.610010
November 255:00 PM CSTF2NW Pottsville/NW Atkins, AR10.4100210
November 255:15 PM CSTF4Heber Springs, AR35.54002390
November 255:15 PM CSTF3Old Hickory/W Hattieville/Macedonia to E Culpepper/W Choctaw, AR31.5125320
November 255:30 PM CSTF2Buford, AR15.11003
November 256:30 PM CSTF4Brandsville, MO20.3800435
November 256:30 PM CSTF3W Aplin/N Perry/S Opello, AR20.2300519
November 256:30 PM CSTF2Springdale, AR503
November 257:30 PM CSTF3Tamo, AR6.22001066
November 257:30 PM CSTF2Newport/Jacksonport, AR10021
November 257:30 PM CSTF2Jessieville, AR100
November 258:30 PM CSTF2S Sheridan, AR20015
November 258:45 PM CSTF2W Haynesville, LA/Ware Chapel, AR14.8200730
November 259:30 PM CSTF2Portland, AR1002
November 2510:00 PM CSTF2Goldonna/Calvin, LA10.32003
November 2510:00 PM CSTF2Gould, AR100325
November 2510:30 PM CSTF3W Mer Rouge, LA5.31001238

This ground now

The live radar over the trackEvery 1926 tornado in MissouriEvery tornado in MissouriWarnings in force in Missouri now

About the record before 1950

Significant tornadoes only
Grazulis listed tornadoes rated F2 or stronger, and weaker ones that killed somebody. Most tornadoes are weaker than F2, so the list holds a fraction of the tornadoes that happened.
The early years are thin
A tornado is on record only where somebody saw it and wrote it down. The count rises through the 1800s with settlement and newspapers, not with the weather.
Rated from accounts
Grazulis rated each tornado decades later from newspaper reports, Weather Bureau records and local histories, not from a damage survey.
The tracks are reconstructed
Tornado Archive drew each path through the places Grazulis names, most often as a straight line from the first to the last. A track can miss a town it hit, and a tornado with one named place is a point. The counties are today’s.
A separate record
SPC’s database, from 1950, counts every confirmed tornado of any strength. The two are kept apart on every page and never added together.

What this means

Ratings are Grazulis's, read from written accounts of the damage; the rating scale is above. About the record before 1950 says what it holds and what it leaves out.

Sources

Thomas P. Grazulis, Significant Tornadoes 1680-1991 and Significant Tornadoes 1880-1989, as digitized by Tornado Archive (Maas and others, 2024). Public domain. Counties assigned by this site from today’s NWS county lines.