Tornadoes · United States · Tennessee · 2003

F1 tornado, Woodbury, Tennessee, May 5, 2003

This F1 tornado ran 3.3 miles across Cannon County on May 5, 2003, touching down at 4:45 PM CDT and reaching 150 yards wide. It killed nobody.

The rating scale

Tracks are drawn in the color of the rating. The Fujita 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 mphthis tornado

    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 mph

    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.

The record

Rating
F1
Date
May 5, 2003
Touchdown
4:45 PM CDT (21:45 UTC)
Path length
3.3 miles (5.3 km)
Path width
150 yards (137 m)
Deaths
0
Injuries
0
County
Cannon County
Touchdown point
35.730, -86.030
Lift-off point
35.750, -85.970
Record number
930

What the Weather Service recorded

Damage to homes on Rogers Road and State Highway 53, continuing onto Whipperville Road which is about a half mile south of the community of Red Hill and ending around the Capp Almond Road and Pleasantview Road area.

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

The warnings

No tornado warning for this county appears in the archive as in force at the moment the tornado touched down. One was issued for the county at another hour that day.

Issued (UTC)ExpiredProductOffice
07:20 UTC08:00 UTCTornado WarningOHX
08:00 UTC08:45 UTCSevere Thunderstorm WarningOHX
08:51 UTC09:20 UTCSevere Thunderstorm WarningOHX
08:55 UTC09:45 UTCSevere Thunderstorm WarningOHX
21:46 UTC22:30 UTCTornado WarningOHX
23:25 UTC02:30 UTCFlash Flood WarningOHX
01:37 UTC04:30 UTCFlash Flood WarningOHX
02:28 UTC05:30 UTCFlash Flood WarningOHX

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 Moderate Risk, with a 0.15 chance of a tornado within 25 miles. The outlook in force was issued at 16:24 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

9.8 hours before the tornado, 69 km from the path. May 5, 2003.

Skew-T log-pSkew-T log-p diagram, Nashville Metro, TN at 12:00Z on 2003-05-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 616 joules per kilogram, CIN -70, lifted condensation level 622 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.
HodographHodograph, Nashville Metro, TN at 12:00Z on 2003-05-05The wind through the lowest 10 kilometers as a curve, rings every 10 meters per second labeled in knots. Zero to 1 km storm-relative helicity 575 square meters per square second, 0 to 6 km bulk shear 51 knots.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.
Mixed-layer CAPE
616 J/kg
Mixed-layer CIN
-70 J/kg
Surface CAPE
155 J/kg
Mixed-layer LCL
622 m above ground
0-6 km bulk shear
51 kt
0-1 km bulk shear
48 kt
0-1 km storm-relative helicity
575 m²/s²
0-3 km storm-relative helicity
604 m²/s²
Significant tornado parameter
2.0
Supercell composite
12.6
0-3 km lapse rate
4.7 K/km

Open this sounding in Storm Lab

Nashville Metro, TN (KBNA), 00:00Z

2.2 hours after it, 69 km from the path. May 6, 2003.

Skew-T log-pSkew-T log-p diagram, Nashville Metro, TN at 00:00Z on 2003-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 968 joules per kilogram, CIN -55, lifted condensation level 645 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.
HodographHodograph, Nashville Metro, TN at 00:00Z on 2003-05-06The wind through the lowest 10 kilometers as a curve, rings every 10 meters per second labeled in knots. Zero to 1 km storm-relative helicity 289 square meters per square second, 0 to 6 km bulk shear 80 knots.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.
Mixed-layer CAPE
968 J/kg
Mixed-layer CIN
-55 J/kg
Surface CAPE
840 J/kg
Mixed-layer LCL
645 m above ground
0-6 km bulk shear
80 kt
0-1 km bulk shear
28 kt
0-1 km storm-relative helicity
289 m²/s²
0-3 km storm-relative helicity
301 m²/s²
Significant tornado parameter
1.8
Supercell composite
7.5
0-3 km lapse rate
5.2 K/km

Open this sounding in Storm Lab

The radar

The Nashville radar (KOHX), 76 km away, was scanning. The volume nearest the touchdown began at 21:45 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.

This ground now

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

The other tornadoes of May 5, 2003

24 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
May 51:30 AM CDTF0Hickman, TN0.110
May 51:38 AM CDTF1Williamson, TN4.0100$3.0 million
May 51:45 AM CDTF1Davidson, TN0.270$250,000
May 52:30 AM CDTF0Rutherford, TN0.120
May 52:45 AM CDTF1Cannon, TN3.0100$500,000
May 54:45 AM CDTF0Marshall, MS1.0100$30,000
May 57:55 AM CDTF0Benton, MS0.550$1,000
May 58:15 AM CDTF0Tippah, MS0.550$1,000
May 58:55 AM CDTF0Alcorn, MS0.550$1,000
May 59:05 AM CDTF0McNairy, TN0.525$1,000
May 59:50 AM CDTF0Hardin, TN0.850$1,000
May 510:48 AM CDTF0Lawrence, TN0.130$1,000
May 511:45 AM CDTF3Lincoln, TN1.67002$50,000
May 51:26 PM CDTF0Gibson, TN0.525$1,000
May 51:45 PM CDTF0Madison, TN4.0200$10,000
May 52:55 PM CDTF0Cheatham, TN0.110
May 55:00 PM EDTF1Pulaski, KY6.0300$500,000
May 55:40 PM CDTF0Mississippi, AR0.550$1,000
May 58:00 PM EDTF1Oakland, MI1.0100$90,000
May 57:15 PM CDTF0Gibson, TN0.550$1,000
May 58:50 PM CDTF0Sunflower, MS0.330$10,000
May 510:50 PM CDTF0Ozark, MO0.220
May 51:34 AM EDTF1Edgefield, SC3.0150
May 51:45 AM EDTF0Saluda, SC0.130

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.