Tornadoes · United States · Texas · 1994

F3 tornado, Marble Falls, Texas, May 13, 1994

This F3 tornado ran 3.5 miles across Burnet County on May 13, 1994, touching down at 11:45 AM CDT and reaching 880 yards wide. It killed nobody and injured 1, and did $500,000 to $5 million 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 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 mphthis tornado

    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
F3
Date
May 13, 1994
Touchdown
11:45 AM CDT (16:45 UTC)
Path length
3.5 miles (5.6 km)
Path width
880 yards (805 m)
Deaths
0
Injuries
1
Property damage
$500,000 to $5 million
County
Burnet County
Touchdown point
30.570, -98.270
Lift-off point
30.600, -98.230
Record number
342

What the Weather Service recorded

The storm approached the city from the west-southwest. There were unconfirmed reports of funnels in the Horseshoe Bay area, four miles southwest of Marble Falls, before the storm arrived. Spotty damage was reported to roofs in the Horseshoe Bay area. The tornado first struck the west side of the city, crossing a heavy commercialized and residential area. Roofs were severely damaged at this time with several structures sustaining F1 and F2 damage. Several boats at a dealership were tossed on top of each other. Two-by-four's were embedded into the side of a church preschool care center, penetrating an inside classroom wall by four to five feet. Fortunately, all children had been moved into hallways just before the tornado arrived. Numerous commerical signs were down with widespread roof damage. This damage became even more extensive as the tornado moved across the northern part of the city. Marble Falls primary school also sustained damage, but students had been evacuated to the main school. Trees were uprooted on the school grounds and damage was reported to outbuildings. Metal I-beams were bent at a nearby metal building, indicating F2 to F3 damage. Three nearby semi-tractor trailer delivery trucks and a bread delivery truck were overturned. Two of these trucks were reported to have been lifted "two to three feet off of the ground" as they were overturned. At a nearby Wal-Mart department store 100 to 200 employees had taken shelter, having practiced their severe weather drill the day before. The store was hit and severely damaged, with the employees sustaining only a few minor injuries. Additional roof damage was reported at Marble Falls High School. Students had just executed a tornado drill as the storm struck. There was extensive peeling of metal from the auditorium and gymnasium roofs. In summary, over 440 homes sustained damage, with one house and 17 mobile homes destroyed and major damage to 36 homes. Eighteen businesses reported major damage with 47 others reporting minor damage. In addition, two bridges were damaged, along with severe damage to schools. In all, 512 structures sustained damage.

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.

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 06:09 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.

Stephenville/Cla, TX (KSEP), 12:00Z

4.8 hours before the tornado, 182 km from the path. May 13, 1994.

Skew-T log-pSkew-T log-p diagram, Stephenville/Cla, TX at 12:00Z on 1994-05-13Temperature 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 -5498, lifted condensation level 1510 meters above ground. Wind barbs in knots down the right edge.LCL10008507005003002001001 km2 km3 km6 km9 km12 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, Stephenville/Cla, TX at 12:00Z on 1994-05-13The 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 85 square meters per square second, 0 to 6 km bulk shear 48 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
-5498 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
1510 m above ground
0-6 km bulk shear
48 kt
0-1 km bulk shear
22 kt
0-1 km storm-relative helicity
85 m²/s²
0-3 km storm-relative helicity
55 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
3.8 K/km

Open this sounding in Storm Lab

Stephenville/Cla, TX (KSEP), 00:00Z

7.2 hours after it, 182 km from the path. May 14, 1994.

Skew-T log-pSkew-T log-p diagram, Stephenville/Cla, TX at 00:00Z on 1994-05-14Temperature 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 -79546, lifted condensation level 1079 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, Stephenville/Cla, TX at 00:00Z on 1994-05-14The 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 113 square meters per square second, 0 to 6 km bulk shear 46 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
-79546 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
1079 m above ground
0-6 km bulk shear
46 kt
0-1 km bulk shear
22 kt
0-1 km storm-relative helicity
113 m²/s²
0-3 km storm-relative helicity
114 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
4.0 K/km

Open this sounding in Storm Lab

This ground now

The live radar over the trackEvery 1994 tornado in TexasEvery tornado in Texas since 1950Warnings in force in Texas nowThe forecast where you are

The other tornadoes of May 13, 1994

28 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
May 138:00 AM CDTF0Galveston, TX4.050$5,000 to $50,000
May 1312:52 PM CDTF2Lavaca, TX0.250$5,000 to $50,000
May 131:05 PM CDTF0Williamson, TX0.230$500 to $5,000
May 131:26 PM CDTF0Hays, TX0.230$50 to $500
May 131:35 PM CDTF0Colorado, TX0.110
May 132:15 PM CDTF2Washington, TX3.050$5,000 to $50,000
May 132:30 PM CDTF0Montgomery, TX0.110
May 132:43 PM CDTF0Colorado, TX0.110
May 132:45 PM CDTF0Bastrop, TX0.230$500 to $5,000
May 132:47 PM CDTF1Lavaca, TX1.090$50,000 to $500,000
May 133:01 PM CDTF0Austin, TX0.110
May 133:03 PM CDTF1Washington, TX4.050$5,000 to $50,000
May 133:15 PM CDTF0Bastrop, TX0.230$500 to $5,000
May 133:30 PM CDTF0Polk, TX0.110
May 133:46 PM CDTF0Washington, TX0.110
May 134:00 PM CDTF0Burleson, TX0.110
May 134:25 PM CDTF0Brazos, TX0.110
May 134:27 PM CDTF0Austin, TX0.1101$500 to $5,000
May 135:10 PM CDTF0Waller, TX0.110$5,000 to $50,000
May 135:10 PM CDTF0Waller, TX0.110$5,000 to $50,000
May 135:10 PM CDTF0Waller, TX0.110$5,000 to $50,000
May 135:10 PM CDTF0Waller, TX0.110$5,000 to $50,000
May 135:20 PM CDTF1Montgomery, TX4.050$5,000 to $50,000
May 135:20 PM CDTF0Houston, TX0.110
May 135:20 PM CDTF0Houston, TX0.110
May 135:40 PM CDTF1Jim Wells, TX0.570
May 136:05 PM CDTF0Montgomery, TX0.110
May 136:20 PM CDTF0Walker, TX0.110

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.