Tornadoes · United States · Arkansas · 2001

F1 tornado, Selma, Arkansas, February 24, 2001

This F1 tornado ran 5.5 miles across Drew County on February 24, 2001, touching down at 5:43 PM CST and reaching 100 yards wide. It killed nobody and injured 1.

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
February 24, 2001
Touchdown
5:43 PM CST (23:43 UTC)
Path length
5.5 miles (8.8 km)
Path width
100 yards (91 m)
Deaths
0
Injuries
1
County
Drew County
Touchdown point
33.630, -91.630
Lift-off point
33.720, -91.620
Record number
16

What the Weather Service recorded

A weak tornado was spawned in northeast Drew County about 6 miles southwest of Selma. The tornado moved quickly northeast, and badly damaged a home. A house trailer was also damaged. Roofs were damaged at a few homes, and many trees were uprooted or snapped. There was one minor injury reported. The tornado travelled about 5.5 miles before dissipating 2.7 miles west-northwest of Selma.

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

The warnings

14 minutes of warning. NWS LZK issued a tornado warning for this county at 23:29 UTC, 14 minutes before the tornado touched down, in force until 00:15 UTC.

Issued (UTC)ExpiredProductOffice
23:29 UTC00:15 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 Moderate Risk. The outlook in force was issued at 20:12 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

11.7 hours before the tornado, 200 km from the path. February 24, 2001.

Skew-T log-pSkew-T log-p diagram, Little Rock, AR at 12:00Z on 2001-02-24Temperature 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 -72518, lifted condensation level 485 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, Little Rock, AR at 12:00Z on 2001-02-24The 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 456 square meters per square second, 0 to 6 km bulk shear 55 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
0 J/kg
Mixed-layer CIN
-72518 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
485 m above ground
0-6 km bulk shear
55 kt
0-1 km bulk shear
43 kt
0-1 km storm-relative helicity
456 m²/s²
0-3 km storm-relative helicity
552 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7
0-3 km lapse rate
2.7 K/km

Open this sounding in Storm Lab

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

0.3 hours after it, 200 km from the path. February 25, 2001.

Skew-T log-pSkew-T log-p diagram, Little Rock, AR at 00:00Z on 2001-02-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 999 joules per kilogram, CIN -16, lifted condensation level 634 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 2001-02-25The 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 420 square meters per square second, 0 to 6 km bulk shear 60 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
999 J/kg
Mixed-layer CIN
-16 J/kg
Surface CAPE
1090 J/kg
Mixed-layer LCL
634 m above ground
0-6 km bulk shear
60 kt
0-1 km bulk shear
55 kt
0-1 km storm-relative helicity
420 m²/s²
0-3 km storm-relative helicity
489 m²/s²
Significant tornado parameter
3.2
Supercell composite
13.4
0-3 km lapse rate
5.8 K/km

Open this sounding in Storm Lab

The surface observations

Monticello (LLQ), 12 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
21:53 UTC7564170° 14 kt241006.8
22:53 UTC7364170° 13 kt231006.4-RA
23:07 UTC71.666.2170° 11 kt211005.8VCTS +RA
23:17 UTC69.866.2190° 10 kt181006.1+TSRA BR
23:24 UTC69.866.2180° 8 kt241006.1+TSRA BR
23:34 UTC6866.2260° 10 kt1006.8+TSRA BR
23:38 UTC66.266.2200° 7 kt151006.1+TSRA BR
23:46 UTC69.866.2220° 16 kt271006.4-TSRA BR
23:53 UTC6966180° 12 kt191006.8-TSRA
23:58 UTC6866.2200° 10 kt191006.8-TSRA
00:11 UTC6866.2200° 11 kt181007.5+RA BR
00:18 UTC6866.2200° 11 kt181007.5-TSRA BR
00:42 UTC69.866.2200° 16 kt221007.5VCTS
00:53 UTC6966220° 12 kt191007.5VCTS -RA
01:03 UTC69.866.2220° 13 kt181007.8-RA
01:19 UTC69.866.2200° 18 kt231007.8VCTS -RA BR
01:34 UTC69.866.2220° 15 kt251008.5
01:40 UTC66.264.4290° 13 kt271009.1VCTS

From the Iowa Environmental Mesonet's archive of airport observations.

The radar

The Little Rock radar (KLZK), 142 km away, was scanning. The volume nearest the touchdown began at 23:42 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 2001 tornado in ArkansasEvery tornado in Arkansas since 1950Warnings in force in Arkansas nowThe forecast where you are

The other tornadoes of February 24, 2001

20 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
February 243:24 PM CSTF1Webster, MO6.550$150,000
February 243:31 PM CSTF2Pulaski, AR14.32008
February 241:50 PM PSTF0Orange, CA0.1100$50,000
February 243:50 PM CSTF1Pulaski, AR2.285
February 244:06 PM CSTF2Lonoke, AR8.0300
February 244:14 PM CSTF1White, AR7.0100
February 244:21 PM CSTF1Lonoke, AR9.0603
February 244:27 PM CSTF1White, AR3.540
February 244:46 PM CSTF2Fulton, AR8.030013
February 245:34 PM CSTF2Jackson, AR11.0200$70,000
February 246:01 PM CSTF3Desha, AR42.0300
February 246:10 PM CSTF0Ashley, AR0.5200$1,000
February 246:13 PM CSTF1Lonoke, AR2.7100
February 246:25 PM CSTF2Prairie, AR12.7200
February 246:30 PM CSTF0Chicot, AR0.5200$1,000
February 246:35 PM CSTF2Washington, MS37.0440$1.5 million
February 246:42 PM CSTF2Desha, AR9.02002$50,000
February 248:20 PM CSTF0Humphreys, MS0.5350$10,000
February 248:37 PM CSTF3Leflore, MS22.0400$2.3 million
February 249:35 PM CSTF3Calhoun, MS52.01,000673$31 million

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.