Tornadoes · United States · Tennessee · 2003

F1 tornado, Cookeville, Tennessee, March 19, 2003

This F1 tornado ran 12.2 miles across Putnam County on March 19, 2003, touching down at 11:09 AM CST and reaching 440 yards wide. It killed 1 person and injured 1, and did $100,000 of property damage.

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
March 19, 2003
Touchdown
11:09 AM CST (17:09 UTC)
Path length
12.2 miles (19.6 km)
Path width
440 yards (402 m)
Deaths
1
Injuries
1
Property damage
$100,000
County
Putnam County
Touchdown point
36.100, -85.580
Lift-off point
36.280, -85.450
Record number
42

What the Weather Service recorded

The tornado touched down 1.5 miles east of exit #280 on I-40. The tornado continued for about 12.2 miles. One person was killed, and another person was injured inside a mobile home on Pippin Road and near Anderson Rd. The time of the fatality was around 11:15 AM CST. The storm ripped the trailer loose from its anchors and flung it over on its side at least 100 feet from its foundation. Numerous trees and power lines were down. The fallen trees and power lines blocked many roads. A total of 67 properties in the Pippin area reported damage. There was damage to houses, barns, trailers, garages, sheds, and at least one church. In the Buffalo Valley Road area, the tornado destroyed a barn and uprooted several huge trees.All six sirens in Cookeville sounded for the tornado warning, which was issued at 10:58 AM CST.

The deaths

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

AgeSexWhereKind
75MMobile/Trailer HomeDirect

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

The warnings

11 minutes of warning. NWS OHX issued a tornado warning for this county at 16:58 UTC, 11 minutes before the tornado touched down, in force until 17:45 UTC.

Issued (UTC)ExpiredProductOffice
16:58 UTC17:45 UTCTornado WarningOHX
17:14 UTC20:15 UTCFlash Flood WarningOHX
17:17 UTC18:00 UTCTornado WarningOHX
17:58 UTC18:15 UTCTornado WarningOHX
19:04 UTC19:30 UTCTornado WarningOHX
19:29 UTC20:00 UTCTornado WarningOHX
20:13 UTC21:00 UTCSevere Thunderstorm 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 Slight Risk. The outlook in force was issued at 13:10 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

5.2 hours before the tornado, 98 km from the path. March 19, 2003.

Skew-T log-pSkew-T log-p diagram, Nashville Metro, TN at 12:00Z on 2003-03-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 0 joules per kilogram, CIN -86146, lifted condensation level 649 meters above ground. Wind barbs in knots down the right edge.LCL10008507005003002001001 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 2003-03-19The 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 70 square meters per square second, 0 to 6 km bulk shear 35 knots.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
-86146 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
649 m above ground
0-6 km bulk shear
35 kt
0-1 km bulk shear
21 kt
0-1 km storm-relative helicity
70 m²/s²
0-3 km storm-relative helicity
231 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
5.1 K/km

Open this sounding in Storm Lab

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

6.8 hours after it, 98 km from the path. March 20, 2003.

Skew-T log-pSkew-T log-p diagram, Nashville Metro, TN at 00:00Z on 2003-03-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 0 joules per kilogram, CIN -68577, lifted condensation level 2993 meters above ground. Wind barbs in knots down the right edge.LCL10008507005003002001001 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 2003-03-20The 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 89 square meters per square second, 0 to 6 km bulk shear 66 knots.1939587897117136Sfc1 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
0 J/kg
Mixed-layer CIN
-68577 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
2993 m above ground
0-6 km bulk shear
66 kt
0-1 km bulk shear
15 kt
0-1 km storm-relative helicity
89 m²/s²
0-3 km storm-relative helicity
117 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
8.3 K/km

Open this sounding in Storm Lab

The radar

The Nashville radar (KOHX), 94 km away, was scanning. The volume nearest the touchdown began at 17:09 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 March 19, 2003

9 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
March 199:20 AM CSTF0Madison, AL0.150
March 1912:42 PM CSTF1Warren, TN0.52001$10,000
March 1912:49 PM CSTF1Jackson, AL0.530
March 1912:50 PM CSTF1White, TN3.6200$10,000
March 1912:52 PM CSTF1Jackson, AL1.040$1,000
March 191:25 PM CSTF0Sangamon, IL0.110
March 191:50 PM CSTF1Jackson, AL10.0503$300,000
March 191:57 PM CSTF0Etowah, AL1.150
March 192:08 PM CSTF0Fentress, TN0.120

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.