Tornadoes · United States · Arkansas · 1997

F2 tornado, Sweet Home to Protho Jct, Arkansas, March 1, 1997

From Sweet Home to Protho Jct, this F2 tornado ran 5.0 miles across Pulaski County on March 1, 1997, touching down at 3:47 PM CST and reaching 350 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 mph

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

  3. F2113 to 157 mphthis tornado

    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
F2
Date
March 1, 1997
Touchdown
3:47 PM CST (21:47 UTC)
Path length
5.0 miles (8.0 km)
Path width
350 yards (320 m)
Deaths
0
Injuries
0
County
Pulaski County
Touchdown point
34.680, -92.230
Lift-off point
34.730, -92.170
Record number
162

What the Weather Service recorded

Another tornado developed just south of the College Station storm, near the Sweet Home area. The tornado traveled northeastward, damaging several buildings. Some trees and power lines were also blown down. The tornado lifted soon after crossing the Arkansas River near the intersection of I-440 and Highway 165. Damage along the tornado's path was consistent with an F2 rating.

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

The warnings

16 minutes of warning. NWS LZK issued a tornado warning for this county at 21:31 UTC, 16 minutes before the tornado touched down, in force until 22:20 UTC.

Issued (UTC)ExpiredProductOffice
20:36 UTC21:25 UTCTornado WarningLZK
21:31 UTC22:20 UTCTornado WarningLZK

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 06:05 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.

Little Rock, AR (KLZK), 12:00Z

9.8 hours before the tornado, 206 km from the path. March 1, 1997.

Skew-T log-pSkew-T log-p diagram, Little Rock, AR at 12:00Z on 1997-03-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 1288 joules per kilogram, CIN -3, lifted condensation level 477 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, Little Rock, AR at 12:00Z on 1997-03-01The 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 174 square meters per square second, 0 to 6 km bulk shear 59 knots.1939587897117Sfc1 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
1288 J/kg
Mixed-layer CIN
-3 J/kg
Surface CAPE
368 J/kg
Mixed-layer LCL
477 m above ground
0-6 km bulk shear
59 kt
0-1 km bulk shear
35 kt
0-1 km storm-relative helicity
174 m²/s²
0-3 km storm-relative helicity
230 m²/s²
Significant tornado parameter
1.9
Supercell composite
6.6
0-3 km lapse rate
4.9 K/km

Open this sounding in Storm Lab

Little Rock, AR (KLZK), 00:00Z

2.2 hours after it, 206 km from the path. March 2, 1997.

Skew-T log-pSkew-T log-p diagram, Little Rock, AR at 00:00Z on 1997-03-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 491 joules per kilogram, CIN -31, lifted condensation level 602 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, Little Rock, AR at 00:00Z on 1997-03-02The 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 -47 square meters per square second, 0 to 6 km bulk shear 69 knots.1939587897117Sfc1 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
491 J/kg
Mixed-layer CIN
-31 J/kg
Surface CAPE
536 J/kg
Mixed-layer LCL
602 m above ground
0-6 km bulk shear
69 kt
0-1 km bulk shear
20 kt
0-1 km storm-relative helicity
-47 m²/s²
0-3 km storm-relative helicity
90 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.7
0-3 km lapse rate
4.9 K/km

Open this sounding in Storm Lab

The radar

The Little Rock radar (KLZK), 16 km away, was scanning. The volume nearest the touchdown began at 21:47 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 1997 tornado in ArkansasEvery tornado in Arkansas since 1950Warnings in force in Arkansas nowThe forecast where you are

The other tornadoes of March 1, 1997

55 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
March 112:47 AM CSTF1Calhoun, MS10.0400$10,000
March 11:00 AM CSTF1Pontotoc, MS15.040014$100,000
March 11:25 AM CSTF2Lewis, TN3.9440$100,000
March 11:32 AM CSTF2Wayne, TN7.84402$200,000
March 12:35 AM CSTF3Calhoun, MS5.04001$10,000
March 12:45 AM CSTF3Lafayette, MS5.0400$10,000
March 13:00 AM CSTF3Pontotoc, MS10.0400$650,000
March 13:15 AM CSTF3Union, MS30.040016$250,000
March 14:26 AM CSTF0Warren, KY0.550
March 14:36 AM CSTF2Monroe, KY4.0500$100,000
March 15:45 AM CSTF2McNairy, TN5.0200$300,000
March 112:59 PM ESTF0Washington, KY5.050$10,000
March 12:50 PM ESTF1Powell, KY6.070$500,000
March 11:55 PM CSTF3Hempstead, AR18.08802$3.0 million
March 12:10 PM CSTF1Baxter, AR5.0200
March 13:15 PM ESTF0Menifee, KY0.120$3,000
March 12:20 PM CSTF4Clark, AR27.01,0536100
March 12:37 PM CSTF1Lonoke, AR3.050
March 12:39 PM CSTF3White, AR13.01005
March 12:47 PM CSTF4Hot Spring, AR24.052711
March 12:55 PM CSTF1Yell, AR1.050
March 13:05 PM CSTF1Yell, AR1.050
March 13:23 PM CSTF2White, AR4.015014
March 13:25 PM CSTF4Saline, AR14.01,4071040
March 13:25 PM CSTF2Jackson, AR8.51,053230
March 13:30 PM CSTF1Pope, AR7.52001
March 13:31 PM CSTF2Independence, AR7.5880
March 13:35 PM CSTF2Saline, AR2.0350
March 13:38 PM CSTF2Conway, AR8.08801
March 13:41 PM CSTF4Pulaski, AR11.01,4075180
March 13:42 PM CSTF2Jackson, AR23.0880130
March 13:48 PM CSTF2Van Buren, AR2.0880
March 14:02 PM CSTF2Crockett, TN5.0100$10,000
March 14:02 PM CSTF2Lonoke, AR2.31003
March 14:07 PM CSTF2Gibson, TN15.0100$30,000
March 14:12 PM CSTF1Van Buren, AR2.5100
March 14:19 PM CSTF3Craighead, AR5.02002$30,000
March 14:22 PM CSTF0Stone, AR0.520
March 14:40 PM CSTF2Carroll, TN10.0100$2.0 million
March 14:40 PM CSTF3Lawrence, AR5.02002$500,000
March 14:45 PM CSTF3Greene, AR15.020015$500,000
March 14:50 PM CSTF1Stone, AR0.520
March 14:52 PM CSTF0Independence, AR4.023
March 14:54 PM CSTF2Woodruff, AR12.0880
March 15:11 PM CSTF1Jackson, AR3.050
March 15:15 PM CSTF1Sharp, AR1.040
March 15:25 PM CSTF3Cross, AR3.0200$750,000
March 15:40 PM CSTF3Poinsett, AR1.0200$10,000
March 16:01 PM CSTF0McLean, KY0.350
March 16:20 PM CSTF4Mississippi, AR20.0200$30,000
March 17:00 PM CSTF4Dyer, TN15.0200115$2.0 million
March 17:30 PM CSTF4Gibson, TN10.0200$100,000
March 110:00 PM CSTF1Hart, KY0.550$90,000
March 110:30 PM CSTF1Bell, TX2.573$40,000
March 111:25 PM CSTF0Metcalfe, KY0.150

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.