Tornadoes · United States · Tennessee · 2021
EF1 tornado, Raus to Tullahoma, Tennessee, December 6, 2021
From Raus to Tullahoma, this EF1 tornado ran 8.0 miles across Moore, Bedford and Coffee counties on December 6, 2021, touching down at 7:40 AM CST and reaching 100 yards wide. It killed nobody, and did $30,000 of property damage.
The rating scale
Tracks are drawn in the color of the rating. The Enhanced Fujita scale rates the damage rather than measuring the wind: the speeds are what that damage is taken to imply.
EF065 to 85 mph
Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.
EF186 to 110 mphthis tornado
Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.
EF2111 to 135 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.
EF3136 to 165 mph
Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.
EF4166 to 200 mph
Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.
EF5over 200 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.
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.
The record
- Rating
- EF1
- Date
- December 6, 2021
- Touchdown
- 7:40 AM CST (13:40 UTC)
- Lifted
- 7:48 AM CST (13:48 UTC)
- On the ground
- 8 minutes
- Path length
- 8.0 miles (12.8 km)
- Path width
- 100 yards (91 m)
- Deaths
- 0
- Injuries
- 0
- Property damage
- $30,000
- Counties
- Moore, Bedford and Coffee counties
- Touchdown point
- 35.395, -86.331
- Lift-off point
- 35.393, -86.190
- Record number
- 2112060740-01
The damage survey
3 damage points were recorded along this path by NWS HUN and NWS OHX, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF1. The highest wind the damage implies is 87 mph.
- Trees on two houses. One deck removed from a house. Minor roof damage. Tornado end point.
Survey points are preliminary and are the raw material the published rating was built from. Source: NWS Damage Assessment Toolkit.
What the Weather Service recorded
After some isolated thunderstorms moved across Middle Tennessee during the afternoon and evening hours on December 5, a line of severe thunderstorms moved across Middle Tennessee during the early morning hours on December. This line of thunderstorms produced 5 tornadoes and numerous reports of wind damage.
A line of thunderstorms during the morning hours produced sporadic wind damage and an EF-1 tornado in Moore County.
This tornado touched down in the Raus community near Smith Chapel Road at Elijah Parker Road in far southern Bedford County, where it caused EF0 damage including blowing down a wall at the Raus Community Center and knocking down trees on Powell Hollow Road. Moving eastward, the tornado crossed into Moore County and strengthened to EF-1 where it blew down numerous trees and caused minor damage to several homes along Brinkley Road, Ledford Mill Road, and Motlow College Road. The tornado then moved into Coffee County, continuing to blow down trees and damage homes in areas along and near Ledford Mill Road. The tornado weakened as it entered and moved across northern portions of the city of Tullahoma, where it damaged signs and outbuildings along North Jackson Street, then blew down numerous trees and caused minor roof damage to homes on Normandy Road, Riley Creek Road, around the Lakewood Golf Course, and in the Lake Tullahoma Estates before lifting. Total path length of this tornado was 8.01 miles.
A tornado moved into Moore County from Bedford County, crossing Brinkley Road where several trees were uprooted. It continued to move to the east, continually uprooting trees as it crossed Ledford Mill Road. As the tornado continued its eastward progression, numerous trees were uprooted and a large barn had part of its roof removed near Motlow College Road. Peak wind speeds were estimated at 86 mph.
This tornado touched down in the Raus community near Smith Chapel Road at Elijah Parker Road in far southern Bedford County, where it caused EF0 damage including blowing down a wall at the Raus Community Center and knocking down trees on Powell Hollow Road. Moving eastward, the tornado crossed into Moore County and strengthened to EF-1 where it blew down numerous trees and caused minor damage to several homes along Brinkley Road, Ledford Mill Road, and Motlow College Road. The tornado then moved into Coffee County, continuing to blow down trees and damage homes in areas along and near Ledford Mill Road. The tornado weakened as it entered and moved across northern portions of the city of Tullahoma, where it damaged signs and outbuildings along North Jackson Street, then blew down numerous trees and caused minor roof damage to homes on Normandy Road, Riley Creek Road, around the Lakewood Golf Course, and in the Lake Tullahoma Estates before lifting.
From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.
The warnings
0 minutes of warning. NWS OHX issued a tornado warning for this county at 13:40 UTC, 0 minutes before the tornado touched down, in force until 13:57 UTC.
| Issued (UTC) | Expired | Product | Office |
|---|---|---|---|
| 13:21 UTC | 14:00 UTC | Severe Thunderstorm Warning | OHX |
| 13:40 UTC | 13:57 UTC | Tornado Warning | OHX |
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 forecast that day
The Storm Prediction Center had this point in a Slight Risk, with a 0.02 chance of a tornado within 25 miles. The outlook in force was issued at 13:00 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 air that afternoon
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.
Nashville Metro, TN (KBNA), 12:00Z
1.7 hours before the tornado, 87 km from the path. December 6, 2021.
- Mixed-layer CAPE
- 250 J/kg
- Mixed-layer CIN
- -10 J/kg
- Surface CAPE
- 264 J/kg
- Mixed-layer LCL
- 665 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 509 m²/s²
- 0-3 km storm-relative helicity
- 600 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 3.8
- 0-3 km lapse rate
- 6.5 K/km
Nashville Metro, TN (KBNA), 00:00Z
10.3 hours after it, 87 km from the path. December 7, 2021.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- -140054 J/kg
- Surface CAPE
- 0 J/kg
- Mixed-layer LCL
- 1547 m above ground
- 0-6 km bulk shear
- 84 kt
- 0-1 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -69 m²/s²
- 0-3 km storm-relative helicity
- 205 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
- 0-3 km lapse rate
- 2.1 K/km
The radar
The Northeast Alabama radar (KHTX), 54 km away, was scanning. The volume nearest the touchdown began at 13:40 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.
What was reported nearby
Local storm reports within 60 km of the path, in the three hours either side.
| Time (UTC) | Report | Where | County | Remark |
|---|---|---|---|---|
| 13:40 UTC | TORNADO | 6 Sw Normandy | Bedford, TN | THIS TORNADO TOUCHED DOWN IN THE RAUS COMMUNITY NEAR SMITH CHAPEL ROAD AT ELIJAH PARKER ROAD IN FAR SOUTHERN BEDFORD COUNTY, WHERE IT CAUSED EF0 DAMAGE INCLUDING BLOWING DOWN A WALL AT THE RAUS COMMUNITY CENTER AND KNOCK |
| 13:42 UTC | TSTM WND DMG | 8 Nne Lynchburg | Moore, TN | EMERGENCY MANAGER REPORTS TREES, POWERLINES, AND HOME DAMAGE IN NORTHERN MOORE COUNTY NEAR LEDFORD MILL ROAD WEST NORTHWEST OF TULLAHOMA. |
| 13:42 UTC | TORNADO | 8 Nne Lynchburg | Moore, TN | NATIONAL WEATHER SERVICE METEOROLOGISTS, ALONG WITH MOORE COUNTY EMA, SURVEYED DAMAGE IN NORTHERN MOORE COUNTY AND DETERMINED THAT IT WAS CAUSED BY AN EF-1 TORNADO. THE TORNADO CROSSED BRINKLEY ROAD WHERE SEVERAL TREES W |
| 13:48 UTC | TSTM WND DMG | 2 Ne Tullahoma | Coffee, TN | BRECKENRIDGE COMMUNITY TREES DOWN. TIME ESTIMATED VIA RADAR. |
| 13:53 UTC | TSTM WND DMG | Tullahoma | Coffee, TN | REPORT OF TREES AND POWERLINES DOWN ON MARBURY ROAD. |
| 14:30 UTC | TSTM WND DMG | Sewanee | Franklin, TN | SEWANEE POLICE REPORTED NUMEROUS TREES AND SOME POWER LINES DOWN ON UNIVERSITY AVENUE. |
| 14:36 UTC | TSTM WND DMG | 2 Ene Sewanee | Franklin, TN | SEWANEE POLICE DEPARTMENT REPORTED NUMEROUS TREES DOWN ON AIRPORT ROAD NEAR HIGHWAY 156. |
From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.
This ground now
The live radar over the trackEvery 2021 tornado in TennesseeEvery tornado in Tennessee since 1950Warnings in force in Tennessee nowThe forecast where you are
The other tornadoes of December 6, 2021
14 more were confirmed in the United States that day.
| Date | Time | Rating | Where | Path (mi) | Width (yd) | Deaths | Injuries | Damage |
|---|---|---|---|---|---|---|---|---|
| December 6 | 4:10 AM EST | EF1 | Franklin, KY | 1.5 | 50 | |||
| December 6 | 4:22 AM EST | EF1 | Scott, KY | 0.3 | 60 | 2 | ||
| December 6 | 3:23 AM CST | EF0 | Graves, KY | 5.9 | 100 | $25,000 | ||
| December 6 | 3:34 AM CST | EF1 | Graves, KY | 9.6 | 500 | $229,000 | ||
| December 6 | 4:33 AM CST | EF1 | Todd, KY | 8.6 | 100 | $150,000 | ||
| December 6 | 4:40 AM CST | EF0 | Todd, KY | 4.4 | 75 | $10,000 | ||
| December 6 | 5:59 AM CST | EF0 | Trousdale, TN | 4.8 | 100 | $15,000 | ||
| December 6 | 6:34 AM CST | EF0 | Lawrence, TN | 0.3 | 25 | $5,000 | ||
| December 6 | 6:55 AM CST | EF0 | Vernon Parish, LA | 0.2 | 10 | $2,000 | ||
| December 6 | 6:56 AM CST | EF0 | Overton, TN | 2.6 | 100 | $15,000 | ||
| December 6 | 7:04 AM CST | EF0 | Pickett, TN | 3.0 | 200 | $25,000 | ||
| December 6 | 9:05 AM CST | Unrated | Morgan, AL | 1.3 | 100 | |||
| December 6 | 2:40 PM CST | EF0 | Washington Parish, LA | 0.9 | 25 | |||
| December 6 | 2:56 PM CST | EF0 | Saint Tammany Parish, LA | 4.2 | 75 | $50,000 |
What this means
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.
Sources
NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.