Tornadoes · United States · Texas · 1999

F0 tornado, Buffalo Gap, Texas, May 25, 1999

This F0 tornado ran 0.1 miles across Taylor County on May 25, 1999, touching down at 6:38 PM CDT and reaching 10 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 25, 1999
Touchdown
6:38 PM CDT (23:38 UTC)
Path length
0.1 miles (0.2 km)
Path width
10 yards (9 m)
Deaths
0
Injuries
0
County
Taylor County
Touchdown point
32.280, -99.820
Lift-off point
32.280, -99.820
Record number
1076

What the Weather Service recorded

Scattered supercell thunderstorms produced very large hail, damaging winds, and a few tornadoes across the northern half of the area during the evening of the 25th. Although no damage was noted, brief tornado touchdowns were reported near Ballinger, Buffalo Gap, and Hamlin. Hail up to the size of baseballs also fell just south of Blackwell and near Oplin, while large hail and high winds damaged windows throughout the community of Sagerton. A line of storms that developed across West Texas moved across the northern Big Country during the early morning hours of the 26th. Damaging winds of up to 70 mph were reported across sections of Haskell and Throckmorton counties.

A tornado touched down briefly near Buffalo Gap in southern Taylor County.

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

The warnings

1 minute of warning. NWS SJT issued a tornado warning for this county at 23:37 UTC, 1 minute before the tornado touched down, in force until 00:20 UTC.

Issued (UTC)ExpiredProductOffice
23:19 UTC00:20 UTCSevere Thunderstorm WarningSJT
23:37 UTC00:20 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 19:37 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

11.6 hours before the tornado, 227 km from the path. May 25, 1999.

Skew-T log-pSkew-T log-p diagram, Midland Regional, TX at 12:00Z on 1999-05-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 28 joules per kilogram, CIN -90, lifted condensation level 717 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 1999-05-25The 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 209 square meters per square second, 0 to 6 km bulk shear 38 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
28 J/kg
Mixed-layer CIN
-90 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
717 m above ground
0-6 km bulk shear
38 kt
0-1 km bulk shear
32 kt
0-1 km storm-relative helicity
209 m²/s²
0-3 km storm-relative helicity
314 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.3
0-3 km lapse rate
4.8 K/km

Open this sounding in Storm Lab

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

0.4 hours after it, 227 km from the path. May 26, 1999.

Skew-T log-pSkew-T log-p diagram, Midland Regional, TX at 00:00Z on 1999-05-26Temperature 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 -5966, lifted condensation level 3471 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 1999-05-26The 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 14 square meters per square second, 0 to 6 km bulk shear 31 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
0 J/kg
Mixed-layer CIN
-5966 J/kg
Surface CAPE
2 J/kg
Mixed-layer LCL
3471 m above ground
0-6 km bulk shear
31 kt
0-1 km bulk shear
3 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
126 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
9.6 K/km

Open this sounding in Storm Lab

The surface observations

Dyess Afb/Abilene (DYS), 16 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
21:55 UTC89.662.640° 5 kt1011.5
22:10 UTC87.862.680° 7 kt1011.5TS
22:18 UTC87.862.690° 6 kt1011.2-TSRA
22:55 UTC7769.8150° 5 kt1011.2-TSRA
23:55 UTC73.466.2170° 11 kt1011.9
00:55 UTC75.268120° 10 kt1012.5

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

This ground now

The live radar over the trackEvery 1999 tornado in TexasEvery tornado in Texas since 1950Warnings in force in Texas nowThe forecast where you are

The other tornadoes of May 25, 1999

16 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
May 252:19 PM MDTF0Sandoval, NM0.150
May 254:22 PM CDTF0Hale, TX0.130
May 253:26 PM MDTF0Chaves, NM0.150
May 255:35 PM CDTF1Jasper, TX3.020$120,000
May 255:58 PM CDTF0Randall, TX0.30
May 256:05 PM CDTF0Randall, TX1.00$10,000
May 256:15 PM CDTF0Harmon, OK0.10
May 255:17 PM MDTF0Quay, NM0.150
May 256:31 PM CDTF0Harmon, OK0.20
May 256:51 PM CDTF0Greer, OK0.10
May 257:00 PM CDTF0Runnels, TX0.110
May 257:04 PM CDTF0Greer, OK0.20
May 257:35 PM CDTF0Jackson, OK1.550
May 258:16 PM CDTF0Tillman, OK1.550
May 258:40 PM CDTF0Jones, TX0.110
May 258:55 PM CDTF0Randall, TX0.10$40,000

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.