Tornadoes · United States · Texas · 1979

F1 tornado, Angelina County, Texas, November 21, 1979

This F1 tornado ran 6.2 miles across Angelina County on November 21, 1979, touching down at 7:00 AM CST and reaching 100 yards wide. It killed nobody, and did $5,000 to $50,000 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
November 21, 1979
Touchdown
7:00 AM CST (13:00 UTC)
Path length
6.2 miles (10.0 km)
Path width
100 yards (91 m)
Deaths
0
Injuries
0
Property damage
$5,000 to $50,000
County
Angelina County
Touchdown point
31.400, -94.800
Lift-off point
31.470, -94.730
Record number
839

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.

Longview/Gregg, TX (KGGG), 12:00Z

1.0 hours before the tornado, 103 km from the path. November 21, 1979.

Skew-T log-pSkew-T log-p diagram, Longview/Gregg, TX at 12:00Z on 1979-11-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 243 joules per kilogram, CIN -33, lifted condensation level 600 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°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, Longview/Gregg, TX at 12:00Z on 1979-11-21The 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 291 square meters per square second, 0 to 6 km bulk shear 49 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
243 J/kg
Mixed-layer CIN
-33 J/kg
Surface CAPE
505 J/kg
Mixed-layer LCL
600 m above ground
0-6 km bulk shear
49 kt
0-1 km bulk shear
37 kt
0-1 km storm-relative helicity
291 m²/s²
0-3 km storm-relative helicity
348 m²/s²
Significant tornado parameter
0.5
Supercell composite
3.6
0-3 km lapse rate
5.3 K/km

Open this sounding in Storm Lab

Longview/Gregg, TX (KGGG), 00:00Z

11.0 hours after it, 103 km from the path. November 22, 1979.

Skew-T log-pSkew-T log-p diagram, Longview/Gregg, TX at 00:00Z on 1979-11-22Temperature 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 -4625, lifted condensation level 1444 meters above ground. Wind barbs in knots down the right edge.LCL10008507005003002001001 km2 km3 km6 km9 km-30°-20°-10°0°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, Longview/Gregg, TX at 00:00Z on 1979-11-22The 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 -212 square meters per square second, 0 to 6 km bulk shear 45 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
-4625 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
1444 m above ground
0-6 km bulk shear
45 kt
0-1 km bulk shear
17 kt
0-1 km storm-relative helicity
-212 m²/s²
0-3 km storm-relative helicity
51 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
2.5 K/km

Open this sounding in Storm Lab

The surface observations

Lufkin/Angelina Co. (LFK), 22 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
11:00 UTC7268150° 10 kt1014.9-RA
12:00 UTC7268150° 10 kt161014.6
12:23 UTC160° 10 kt161014.9
13:00 UTC7368150° 8 kt1014.9TSRA
14:00 UTC7369160° 10 kt1014.9TS

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

This ground now

The live radar over the trackEvery 1979 tornado in TexasEvery tornado in Texas since 1950Warnings in force in Texas nowThe forecast where you are

The other tornadoes of November 21, 1979

1 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
November 218:00 AM CSTF1Nacogdoches, TX2.077$5,000 to $50,000

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.