Tornadoes · United States · Texas · 2023

Unrated tornado, Kosse to Old Union, Texas, April 2, 2023

From Kosse to Old Union, this Unrated tornado ran 1.2 miles across Limestone County on April 2, 2023, touching down at 5:43 PM CDT and reaching 33 yards wide. It killed nobody.

The rating scale

Tracks are drawn in the color of the rating. The Enhanced Fujita scale rates the damage rather than measuring the wind: the speeds are what that damage is taken to imply.

  1. EF065 to 85 mph

    Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.

  2. EF186 to 110 mph

    Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.

  3. EF2111 to 135 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. EF3136 to 165 mph

    Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.

  5. EF4166 to 200 mph

    Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.

  6. EF5over 200 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. Unratedthis tornado

    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
Unrated
Date
April 2, 2023
Touchdown
5:43 PM CDT (22:43 UTC)
Lifted
5:45 PM CDT (22:45 UTC)
On the ground
2 minutes
Path length
1.2 miles (1.9 km)
Path width
33 yards (30 m)
Deaths
0
Injuries
0
County
Limestone County
Touchdown point
31.373, -96.491
Lift-off point
31.376, -96.471
Record number
2304021643-01

What the Weather Service recorded

Widespread thunderstorms developed during the afternoon of Sunday April 2 in the vicinity of a dryline and a warm front, both of which were draped across the area. Many of these storms became severe, and a few storms in Central Texas produced large hail up to 3 inches. Another storm moving through Falls and Limestone County produced 4 brief tornadoes. Additional storms developed the afternoon of Monday April 3 along the dryline, which had surged east to near the I-35 corridor. Fewer storms occurred on Monday, but some still became severe.

A rope tornado was reported in this approximate location. Tree damage was reported on State Highway 14 north of Kosse. The exact location is unknown but is close to the plotted track. This tornado was the second of 4 brief tornadoes a parent supercell produced as it moved across Falls and Limestone counties.

A brief tornado was reported crossing FM 1246 between Thornton and Oletha. The exact location is unknown but is close to the plotted track. This tornado was the third of 4 brief tornadoes a parent supercell produced as it moved across Falls and Limestone counties.

A brief tornado was verified through storm spotters and via public video. Some tree limbs were broken. The exact location is unknown but is close to the plotted track. This tornado was the fourth of 4 brief tornadoes a parent supercell produced as it moved across Falls and Limestone counties.

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

The warnings

41 minutes of warning. NWS FWD issued a tornado warning for this county at 22:02 UTC, 41 minutes before the tornado touched down, in force until 22:45 UTC.

The county was under a tornado watch, issued at 19:45 UTC and running to 02:32 UTC.

Issued (UTC)ExpiredProductOffice
19:45 UTC02:32 UTCTornado WatchFWD
21:42 UTC22:45 UTCSevere Thunderstorm WarningFWD
22:02 UTC22:45 UTCTornado WarningFWD
22:43 UTC23:30 UTCTornado WarningFWD

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 Enhanced Risk, with a 0.10 chance of a tornado within 25 miles, in the hatched area where significant tornadoes were expected. The outlook in force was issued at 20:00 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.

Fort Worth, TX (KFWD), 12:00Z

10.7 hours before the tornado, 179 km from the path. April 2, 2023.

Skew-T log-pSkew-T log-p diagram, Fort Worth, TX at 12:00Z on 2023-04-02Temperature 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 -92104, lifted condensation level 2389 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, Fort Worth, TX at 12:00Z on 2023-04-02The 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 269 square meters per square second, 0 to 6 km bulk shear 41 knots.1939587897117136Sfc1 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
-92104 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
2389 m above ground
0-6 km bulk shear
41 kt
0-1 km bulk shear
31 kt
0-1 km storm-relative helicity
269 m²/s²
0-3 km storm-relative helicity
341 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.4
0-3 km lapse rate
3.4 K/km

Open this sounding in Storm Lab

Fort Worth, TX (KFWD), 00:00Z

1.3 hours after it, 179 km from the path. April 3, 2023.

Skew-T log-pSkew-T log-p diagram, Fort Worth, TX at 00:00Z on 2023-04-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 1399 joules per kilogram, CIN -65, lifted condensation level 1038 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, Fort Worth, TX at 00:00Z on 2023-04-03The 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 31 square meters per square second, 0 to 6 km bulk shear 65 knots.1939587897117136Sfc1 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
1399 J/kg
Mixed-layer CIN
-65 J/kg
Surface CAPE
2105 J/kg
Mixed-layer LCL
1038 m above ground
0-6 km bulk shear
65 kt
0-1 km bulk shear
8 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
94 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.3
0-3 km lapse rate
6.7 K/km

Open this sounding in Storm Lab

The surface observations

Mexia Limestone (LXY), 30 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
20:55 UTC75.667.5160° 14 kt201009.1VCTS
21:15 UTC7568.5160° 11 kt231008.5-VCTSRA
21:35 UTC76.869160° 17 kt251007.8
21:55 UTC78.869170° 17 kt241007.5
22:15 UTC78.369170° 15 kt281007.5
22:35 UTC7869170° 17 kt261007.1
22:55 UTC76.868.5170° 20 kt261007.5
23:15 UTC74.566.7180° 11 kt191007.8
23:35 UTC73.264.40° 0 kt1007.8
23:55 UTC73.465.7160° 5 kt1007.5
00:15 UTC72.765.7240° 8 kt181007.8
00:35 UTC74.866.4190° 9 kt181006.4

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

The radar

The Ft Hood radar (KGRK), 112 km away, was scanning. The volume nearest the touchdown began at 22:44 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 2023 tornado in TexasEvery tornado in Texas since 1950Warnings in force in Texas nowThe forecast where you are

The other tornadoes of April 2, 2023

3 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
April 25:15 PM CDTUnratedFalls, TX0.925
April 25:36 PM CDTEF0Limestone, TX0.433
April 26:00 PM CDTEF0Limestone, TX0.733

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.