Tornadoes · United States · Texas · 2002

F1 tornado, Wilmeth to Norton, Texas, March 30, 2002

From Wilmeth to Norton, this F1 tornado ran 3.0 miles across Runnels County on March 30, 2002, touching down at 1:06 PM CST and reaching 85 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 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 30, 2002
Touchdown
1:06 PM CST (19:06 UTC)
Path length
3.0 miles (4.8 km)
Path width
85 yards (78 m)
Deaths
0
Injuries
0
Property damage
$30,000
County
Runnels County
Touchdown point
31.920, -100.200
Lift-off point
31.950, -100.170
Record number
473

What the Weather Service recorded

An intense upper level low moving across West Central Texas spawned at least a half dozen tornadoes on the afternoon of the 30th. Although most touched down in open fields and produced little in the way of damage, one tornado did strike a house and cause moderate damage. Other storms produced up to golf ball size hail near San Saba and quarter size hail west of Winters in Runnels County and in Albany in Shackelford County.

A tornado touched down along Ranch Road 384 in northeast Runnels County, striking and damaging a house. Part of the roof was torn off, allowing rainwater to enter the building.

A large tornado touched down in an open field northwest of Norton in northeast Runnels County. Little damage was reported.

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
19:09 UTC20:00 UTCTornado WarningSJT
20:00 UTC21:00 UTCSevere Thunderstorm WarningSJT

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 16:37 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.

Midland Regional, TX (KMAF), 12:00Z

7.1 hours before the tornado, 190 km from the path. March 30, 2002.

Skew-T log-pSkew-T log-p diagram, Midland Regional, TX at 12:00Z on 2002-03-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 593 joules per kilogram, CIN -4, lifted condensation level 507 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, Midland Regional, TX at 12:00Z on 2002-03-30The 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 16 square meters per square second, 0 to 6 km bulk shear 37 knots.193958Sfc1 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
593 J/kg
Mixed-layer CIN
-4 J/kg
Surface CAPE
780 J/kg
Mixed-layer LCL
507 m above ground
0-6 km bulk shear
37 kt
0-1 km bulk shear
14 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
109 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.6
0-3 km lapse rate
5.5 K/km

Open this sounding in Storm Lab

Midland Regional, TX (KMAF), 00:00Z

4.9 hours after it, 190 km from the path. March 31, 2002.

Skew-T log-pSkew-T log-p diagram, Midland Regional, TX at 00:00Z on 2002-03-31Temperature 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 -1, lifted condensation level 597 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, Midland Regional, TX at 00:00Z on 2002-03-31The 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 26 square meters per square second, 0 to 6 km bulk shear 31 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
-1 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
597 m above ground
0-6 km bulk shear
31 kt
0-1 km bulk shear
7 kt
0-1 km storm-relative helicity
26 m²/s²
0-3 km storm-relative helicity
56 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

This ground now

The live radar over the trackEvery 2002 tornado in TexasEvery tornado in Texas since 1950Warnings in force in Texas nowThe forecast where you are

The other tornadoes of March 30, 2002

22 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
March 3012:51 PM CSTF0Falls, TX0.775$1,000
March 301:21 PM CSTF2Limestone, TX7.0440$250,000
March 301:45 PM CSTF1Runnels, TX0.5100
March 301:55 PM CSTF0Limestone, TX3.530$4,000
March 302:17 PM CSTF0Taylor, TX0.220
March 302:17 PM CSTF0Taylor, TX0.220
March 302:40 PM CSTF1Callahan, TX9.0200
March 303:10 PM CSTF0Callahan, TX0.330
March 303:52 PM CSTF0Hamilton, TX1.240$10,000
March 303:59 PM CSTF1Eastland, TX1.0100$50,000
March 304:05 PM CSTF0Hamilton, TX2.5100$70,000
March 304:10 PM CSTF0Eastland, TX0.130
March 304:20 PM CSTF0Erath, TX0.130
March 304:24 PM CSTF0Anderson, TX0.130
March 304:42 PM CSTF1Cherokee, TX33.0150
March 305:30 PM CSTF0Wharton, TX0.520
March 305:36 PM CSTF0Fort Bend, TX0.530$150,000
March 305:40 PM CSTF0Wharton, TX0.550$50,000
March 306:15 PM CSTF0Nacogdoches, TX3.050
March 306:50 PM CSTF3Angelina, TX49.04406$6.2 million
March 307:15 PM CSTF0Fort Bend, TX0.530$20,000
March 308:09 PM CSTF3Harris, TX0.760$350,000

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.