Tornadoes · United States · Texas · 2002

F0 tornado, Ft Stockton, Texas, May 10, 2002

This F0 tornado ran 0.2 miles across Pecos County on May 10, 2002, touching down at 8:49 PM CDT and reaching 50 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 mphthis tornado

    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 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
F0
Date
May 10, 2002
Touchdown
8:49 PM CDT (01:49 UTC)
Path length
0.2 miles (0.3 km)
Path width
50 yards (46 m)
Deaths
0
Injuries
0
County
Pecos County
Touchdown point
30.770, -102.730
Lift-off point
30.770, -102.730
Record number
106

What the Weather Service recorded

Three intense supercell thunderstorms developed over northern and central Pecos County during the afternoon and evening of the 10th. The first storm tracked slowly across the northern parts of the county, devastating crops near the town of Coyanosa. The second storm followed a similar path, but resulted in less destructive hail. The third supercell to affect Pecos County this day developed northwest of Fort Stockton, and proceeded to move east across the northern parts of the city. This storm resulted in devastating hail. The storm then tracked along, and just south, of Interstate 10. A brief tornado was observed south of the interstate by a local TV meteorologist southeast of Fort Stockton. Damage from hail was common along Interstate 10 between Fort Stockton and Bakersfield. Total losses from the Pecos County storms were roughly three million dollars.Additional severe thunderstorms were observed across West Texas on the 10th. An isolated supercell moved out of southeast New Mexico...producing severe thunderstorm winds in Andrews County. Also, a severe thunderstorm in the Big Bend region resulted in severe thunderstorm wind gusts.

A brief tornado was reported by a television meteorologist.

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

The warnings

3 minutes of warning. NWS MAF issued a tornado warning for this county at 01:46 UTC, 3 minutes before the tornado touched down, in force until 02:15 UTC.

Issued (UTC)ExpiredProductOffice
21:49 UTC22:30 UTCSevere Thunderstorm WarningMAF
22:27 UTC23:00 UTCSevere Thunderstorm WarningMAF
22:59 UTC00:00 UTCSevere Thunderstorm WarningMAF
23:27 UTC03:15 UTCFlash Flood WarningMAF
00:01 UTC01:00 UTCSevere Thunderstorm WarningMAF
00:59 UTC02:00 UTCSevere Thunderstorm WarningMAF
01:46 UTC02:15 UTCTornado WarningMAF
02:16 UTC03:00 UTCSevere Thunderstorm WarningMAF
02:57 UTC03:45 UTCSevere Thunderstorm WarningMAF

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, with a 0.05 chance of a tornado within 25 miles. The outlook in force was issued at 01:07 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), 00:00Z

1.8 hours before the tornado, 141 km from the path. May 11, 2002.

Skew-T log-pSkew-T log-p diagram, Midland Regional, TX at 00:00Z on 2002-05-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 1926 joules per kilogram, CIN -115, lifted condensation level 1619 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 2002-05-11The 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 42 square meters per square second, 0 to 6 km bulk shear 44 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
1926 J/kg
Mixed-layer CIN
-115 J/kg
Surface CAPE
2179 J/kg
Mixed-layer LCL
1619 m above ground
0-6 km bulk shear
44 kt
0-1 km bulk shear
11 kt
0-1 km storm-relative helicity
42 m²/s²
0-3 km storm-relative helicity
113 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.4
0-3 km lapse rate
7.5 K/km

Open this sounding in Storm Lab

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

10.2 hours after it, 141 km from the path. May 11, 2002.

Skew-T log-pSkew-T log-p diagram, Midland Regional, TX at 12:00Z on 2002-05-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 1154 joules per kilogram, CIN -224, lifted condensation level 644 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 2002-05-11The 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 199 square meters per square second, 0 to 6 km bulk shear 39 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
1154 J/kg
Mixed-layer CIN
-224 J/kg
Surface CAPE
1465 J/kg
Mixed-layer LCL
644 m above ground
0-6 km bulk shear
39 kt
0-1 km bulk shear
23 kt
0-1 km storm-relative helicity
199 m²/s²
0-3 km storm-relative helicity
226 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.6
0-3 km lapse rate
4.8 K/km

Open this sounding in Storm Lab

The surface observations

Fort Stockton (FST), 24 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
23:53 UTC8465150° 21 kt331008.1VCTS HZ
00:59 UTC80.664.470° 16 kt361008.5TS
01:14 UTC69.866.2350° 26 kt451011.2TS
01:24 UTC69.866.240° 28 kt371010.8TSRA BR
01:31 UTC71.666.260° 20 kt391011.2-TSRA BR
01:33 UTC71.666.270° 17 kt391011.5-TSRA BR
01:46 UTC71.666.280° 19 kt311010.2VCTS
01:53 UTC7466120° 18 kt281010.5VCTS
02:01 UTC71.666.2110° 21 kt281010.2
02:53 UTC7365120° 19 kt1010.5
03:00 UTC73.464.4120° 17 kt1010.5HZ
03:10 UTC71.664.4100° 19 kt251010.8HZ
03:17 UTC71.664.4110° 19 kt251010.5

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

The radar

The Midland/Odessa radar (KMAF), 140 km away, was scanning. The volume nearest the touchdown began at 01:47 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 2002 tornado in TexasEvery tornado in Texas since 1950Warnings in force in Texas nowThe forecast where you are

The other tornadoes of May 10, 2002

1 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
May 109:50 PM CDTF0Floyd, TX0.540

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.