Tornadoes · United States · Texas · 2002

F1 tornado, San Angelo to Veribest, Texas, March 19, 2002

From San Angelo to Veribest, this F1 tornado ran 4.0 miles across Tom Green County on March 19, 2002, touching down at 2:00 PM CST and reaching 50 yards wide. It killed nobody, and did $10,000 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, 2002
Touchdown
2:00 PM CST (20:00 UTC)
Path length
4.0 miles (6.4 km)
Path width
50 yards (46 m)
Deaths
0
Injuries
0
Property damage
$10,000
County
Tom Green County
Touchdown point
31.430, -100.300
Lift-off point
31.480, -100.250
Record number
471

What the Weather Service recorded

A supercell thunderstorm produced 3 tornadoes as it moved from San Angelo northeast to near Ballinger. Although the tornadoes produced minor damages, hail up to the size of golf balls that fell during the storm pounded the southern half of San Angelo, producing over $15 million in damage. Other storms produced quarter size hail and wind damage across parts of the Heartland and Northwest Hill Country.

A tornado touched down on the extreme southeast side of San Angelo, producing minor damage as it tracked along a 3 mile long path. Several empty mobile homes were overturned and a handful of hunting blinds tossed around by the tornado.

A tornado traveled a 4 mile path across eastern Tom Green County, producing relatively minor damage. The tornado ripped part of a flat roof off of an outbuilding, threw several irrigation pipes a few hundred yards, and picked up and moved heavy steel pipes.

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

The warnings

40 minutes of warning. NWS SJT issued a tornado warning for this county at 19:20 UTC, 40 minutes before the tornado touched down, in force until 20:00 UTC.

Issued (UTC)ExpiredProductOffice
18:26 UTC19:00 UTCSevere Thunderstorm WarningSJT
19:04 UTC20:00 UTCSevere Thunderstorm WarningSJT
19:20 UTC20:00 UTCTornado WarningSJT
19:43 UTC21:15 UTCFlash Flood WarningSJT
19:48 UTC20:45 UTCTornado 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 19:44 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

8.0 hours before the tornado, 190 km from the path. March 19, 2002.

Skew-T log-pSkew-T log-p diagram, Midland Regional, TX at 12:00Z on 2002-03-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 18 joules per kilogram, CIN -112, lifted condensation level 2043 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 2002-03-19The 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 48 square meters per square second, 0 to 6 km bulk shear 93 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
18 J/kg
Mixed-layer CIN
-112 J/kg
Surface CAPE
689 J/kg
Mixed-layer LCL
2043 m above ground
0-6 km bulk shear
93 kt
0-1 km bulk shear
22 kt
0-1 km storm-relative helicity
48 m²/s²
0-3 km storm-relative helicity
87 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1
0-3 km lapse rate
6.5 K/km

Open this sounding in Storm Lab

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

4.0 hours after it, 190 km from the path. March 20, 2002.

Skew-T log-pSkew-T log-p diagram, Midland Regional, TX at 00:00Z on 2002-03-20Temperature 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 -69093, lifted condensation level 691 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, Midland Regional, TX at 00:00Z on 2002-03-20The 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 148 square meters per square second, 0 to 6 km bulk shear 74 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
-69093 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
691 m above ground
0-6 km bulk shear
74 kt
0-1 km bulk shear
12 kt
0-1 km storm-relative helicity
148 m²/s²
0-3 km storm-relative helicity
28 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

The surface observations

San Angelo/Mathis (SJT), 24 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
18:53 UTC7164100° 6 kt1006.8
19:10 UTC6862.650° 12 kt1005.4
19:20 UTC66.260.8250° 26 kt341007.1TS
19:25 UTC60.853.6270° 32 kt481009.5-TSRA
19:27 UTC57.251.8290° 32 kt481009.1+TSRA
19:34 UTC53.653.6310° 21 kt261007.8+TSGRRA FG
19:37 UTC55.453.6310° 18 kt261007.5TSRA FG
19:40 UTC55.453.6310° 20 kt241007.5-TSRA BR
19:53 UTC5756340° 9 kt1007.1RA BR
20:04 UTC57.257.210° 5 kt1006.8-RA
20:16 UTC57.257.210° 6 kt1006.4-RA
20:24 UTC57.257.2 4 kt1007.5+RA BR
20:29 UTC57.257.240° 10 kt1006.4+RA BR
20:32 UTC57.257.230° 13 kt1006.4+TSRA BR
20:37 UTC57.255.4 1006.4TS
20:53 UTC565520° 15 kt1006.1-RA BR
20:56 UTC55.455.420° 24 kt1006.1TSRA BR
21:31 UTC55.455.430° 12 kt1008.1TSRA BR
21:38 UTC55.455.430° 12 kt1007.1TSRA BR
21:53 UTC585630° 12 kt1006.4-TSRA BR

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

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 19, 2002

14 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
March 191:31 PM CSTF1Tom Green, TX3.050$2,000
March 192:13 PM CSTF0Runnels, TX0.220
March 193:20 PM CSTF0Val Verde, TX0.230
March 193:45 PM CSTF0Val Verde, TX0.230
March 194:04 PM CSTF0Kinney, TX0.2100
March 194:10 PM CSTF0Val Verde, TX0.230
March 196:50 PM CSTF0Uvalde, TX2.050
March 197:10 PM CSTF1Medina, TX0.350
March 197:15 PM CSTF0Bexar, TX0.520$500,000
March 197:17 PM CSTF0Bexar, TX0.520$500,000
March 197:17 PM CSTF1Bexar, TX0.520$500,000
March 197:19 PM CSTF1Bexar, TX1.050$500,000
March 197:20 PM CSTF2Bexar, TX1.55030$2.0 million
March 197:25 PM CSTF1Bexar, TX0.560$1.0 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.