Tornadoes · United States · Texas · 1965

F0 tornado, Harris County, Texas, February 9, 1965

This F0 tornado ran 0.1 miles across Harris County on February 9, 1965, touching down at 3:00 PM GMT-6 and reaching 17 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
February 9, 1965
Touchdown
3:00 PM GMT-6 (21:00 UTC)
Path length
0.1 miles (0.2 km)
Path width
17 yards (16 m)
Deaths
0
Injuries
0
County
Harris County
Touchdown point
29.530, -95.170
Record number
32

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.

Lake Charles Mun, LA (KLCH), 12:00Z

9.0 hours before the tornado, 201 km from the path. February 9, 1965.

Skew-T log-pSkew-T log-p diagram, Lake Charles Mun, LA at 12:00Z on 1965-02-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 187 joules per kilogram, CIN -104, lifted condensation level 649 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 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, Lake Charles Mun, LA at 12:00Z on 1965-02-09The 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 208 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
187 J/kg
Mixed-layer CIN
-104 J/kg
Surface CAPE
295 J/kg
Mixed-layer LCL
649 m above ground
0-6 km bulk shear
39 kt
0-1 km bulk shear
32 kt
0-1 km storm-relative helicity
208 m²/s²
0-3 km storm-relative helicity
260 m²/s²
Significant tornado parameter
0.1
Supercell composite
2.1
0-3 km lapse rate
4.8 K/km

Open this sounding in Storm Lab

Lake Charles Mun, LA (KLCH), 00:00Z

3.0 hours after it, 201 km from the path. February 10, 1965.

Skew-T log-pSkew-T log-p diagram, Lake Charles Mun, LA at 00:00Z on 1965-02-10Temperature 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 -9717, lifted condensation level 748 meters above ground. Wind barbs in knots down the right edge.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 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, Lake Charles Mun, LA at 00:00Z on 1965-02-10The 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 156 square meters per square second, 0 to 6 km bulk shear 60 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
-9717 J/kg
Surface CAPE
7 J/kg
Mixed-layer LCL
748 m above ground
0-6 km bulk shear
60 kt
0-1 km bulk shear
42 kt
0-1 km storm-relative helicity
156 m²/s²
0-3 km storm-relative helicity
221 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
3.4 K/km

Open this sounding in Storm Lab

The surface observations

Houston/Ellington (EFD), 9 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
19:00 UTC58.2854.320° 0 kt-SHRA DZ
20:00 UTC58.2856.30° 0 kt
21:00 UTC58.2855.4270° 3 kt1009.5-TSRA
22:00 UTC58.2855.40° 0 kt-SHRA

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

This ground now

The live radar over the trackEvery 1965 tornado in TexasEvery tornado in Texas since 1950Warnings in force in Texas nowThe forecast where you are

The other tornadoes of February 9, 1965

11 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
February 91:10 AM GMT-7F2Salt Lake, UT0.113$5,000 to $50,000
February 910:00 AM GMT-6F1Clark, AR1.030$5,000 to $50,000
February 911:15 AM GMT-6F1Columbia, AR0.110$50 to $500
February 912:00 PM GMT-6F1Hempstead, AR0.110$500 to $5,000
February 912:00 PM GMT-6F1Columbia, AR0.110$500 to $5,000
February 912:50 PM GMT-6F3Bradley, AR1.51671$50,000 to $500,000
February 92:00 PM GMT-6F3Arkansas, AR10.53334$50,000 to $500,000
February 92:30 PM GMT-6F1Washington, MS0.110$50 to $500
February 92:45 PM GMT-6F3Monroe, AR2.02005$5,000 to $50,000
February 93:50 PM GMT-6F2White, IL3.310$50,000 to $500,000
February 96:00 PM GMT-5F1Morgan, IN0.110$50 to $500

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.