Tornadoes · United States · Texas · 2013

EF0 tornado, Evant, Texas, May 15, 2013

This EF0 tornado ran 1.0 miles across Hamilton County on May 15, 2013, touching down at 8:35 PM CDT and reaching 40 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 mphthis tornado

    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. 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
EF0
Date
May 15, 2013
Touchdown
8:35 PM CDT (01:35 UTC)
Lifted
8:37 PM CDT (01:37 UTC)
On the ground
2 minutes
Path length
1.0 miles (1.7 km)
Path width
40 yards (37 m)
Deaths
0
Injuries
0
Crop damage
$20,000
County
Hamilton County
Touchdown point
31.502, -98.145
Lift-off point
31.506, -98.128
Record number
1305151935-01

What the Weather Service recorded

A tornado and severe weather outbreak occurred on the afternoon and evening hours of May 15th. Nineteen tornadoes occurred, including one EF-4 and one EF-3. Six fatalities occurred in the city of Granbury, TX. These fatalities were the first in the Fort Worth county warning area since 2006. An additional 54 people were injured by the various tornadoes during the evening of May 15th. A number of homes, 171, suffered major damaged or were destroyed. An additional 513 homes suffered minor damage or were somehow affected. ||During the afternoon of May 15th, a vigorous upper level low moved slowly southeast from the panhandle of Texas into the Red River Valley. A dry line strengthened throughout the day, triggering thunderstorms between Bowie and the DFW metroplex. As the upper storm moved slowly east and southeast, several supercell thunderstorms developed, and most of them produced tornadoes.

The Hamilton County Emergency Manager observed two nearly simultaneous tornadoes just north of Evant. This was the northernmost tornado of the two.

The Hamilton County Emergency Manager observed two nearly simultaneous tornadoes just north of Evant. This was the easternmost tornado of the two.

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

The warnings

8 minutes of warning. NWS FWD issued a tornado warning for this county at 01:27 UTC, 8 minutes before the tornado touched down, in force until 02:15 UTC.

The county was under a tornado watch, issued at 23:05 UTC and running to 05:51 UTC.

Issued (UTC)ExpiredProductOffice
23:05 UTC05:51 UTCTornado WatchFWD
23:10 UTC00:15 UTCSevere Thunderstorm WarningFWD
23:17 UTC00:00 UTCTornado WarningFWD
23:59 UTC01:00 UTCTornado WarningFWD
00:59 UTC02:00 UTCSevere Thunderstorm WarningFWD
01:27 UTC02:15 UTCTornado WarningFWD
02:01 UTC02:45 UTCTornado WarningFWD
02:44 UTC03:45 UTCSevere Thunderstorm WarningFWD
03:28 UTC04:30 UTCSevere Thunderstorm 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 Slight Risk, with a 0.05 chance of a tornado within 25 miles. The outlook in force was issued at 00:59 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), 00:00Z

1.6 hours before the tornado, 168 km from the path. May 16, 2013.

Skew-T log-pSkew-T log-p diagram, Fort Worth, TX at 00:00Z on 2013-05-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 1604 joules per kilogram, CIN -30, lifted condensation level 843 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 2013-05-16The 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 244 square meters per square second, 0 to 6 km bulk shear 45 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
1604 J/kg
Mixed-layer CIN
-30 J/kg
Surface CAPE
2573 J/kg
Mixed-layer LCL
843 m above ground
0-6 km bulk shear
45 kt
0-1 km bulk shear
24 kt
0-1 km storm-relative helicity
244 m²/s²
0-3 km storm-relative helicity
436 m²/s²
Significant tornado parameter
3.0
Supercell composite
20.6
0-3 km lapse rate
6.3 K/km

Open this sounding in Storm Lab

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

10.4 hours after it, 168 km from the path. May 16, 2013.

Skew-T log-pSkew-T log-p diagram, Fort Worth, TX at 12:00Z on 2013-05-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 25 joules per kilogram, CIN -346, lifted condensation level 1049 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 12:00Z on 2013-05-16The 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 381 square meters per square second, 0 to 6 km bulk shear 43 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
25 J/kg
Mixed-layer CIN
-346 J/kg
Surface CAPE
129 J/kg
Mixed-layer LCL
1049 m above ground
0-6 km bulk shear
43 kt
0-1 km bulk shear
41 kt
0-1 km storm-relative helicity
381 m²/s²
0-3 km storm-relative helicity
594 m²/s²
Significant tornado parameter
0.0
Supercell composite
6.5
0-3 km lapse rate
3.9 K/km

Open this sounding in Storm Lab

The surface observations

Hamilton (MNZ), 18 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
23:35 UTC81.562.6170° 16 kt201009.1
23:55 UTC8163.68180° 14 kt191008.8
00:15 UTC79.5265.66180° 12 kt171008.1-VCTSRA
00:35 UTC78.2667180° 20 kt261007.8-TSRA
00:55 UTC75.3868.54180° 24 kt311007.8-VCTSRA
01:15 UTC75.269170° 21 kt291008.1-VCTSRA
01:35 UTC74.369.26180° 24 kt341009.1TSRA
01:55 UTC72.8671.6180° 20 kt311009.1-VCTSRA
02:15 UTC72.6870.7190° 22 kt381009.5-TSRA
02:55 UTC73.5866.74170° 22 kt381007.8VCTS

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

The radar

The Ft Hood radar (KGRK), 113 km away, was scanning. The volume nearest the touchdown began at 01:34 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.

What was reported nearby

Local storm reports within 60 km of the path, in the three hours either side.

Time (UTC)ReportWhereCountyRemark
23:32 UTCHAIL 1.75PriddyMills, TX
00:00 UTCHAIL 2.75CaradanMills, TXBASEBALL HAIL IN CARADAN
00:17 UTCHAIL 1.752 S Indian GapHamilton, TXGOLFBALL HAIL SOUTH OF INDIAN GAP NEAR THE HAMILTON/MILLS COUNTY LINE
00:52 UTCHAIL 0.885 S PottsvilleHamilton, TXINTERSECTION OF 221 AND 2005
01:05 UTCHAIL 1.759 S HamiltonHamilton, TX
01:12 UTCHAIL 2.751 Sse ShiveHamilton, TX
03:57 UTCTSTM WND GST 592 Sw HamiltonHamilton, TX

From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.

This ground now

The live radar over the trackEvery 2013 tornado in TexasEvery tornado in Texas since 1950Warnings in force in Texas nowThe forecast where you are

The other tornadoes of May 15, 2013

19 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
May 155:33 PM CDTEF0Montague, TX1.170$30,000
May 156:14 PM CDTEF0Mills, TX3.450
May 156:34 PM CDTEF0Pontotoc, OK0.550$20,000
May 156:41 PM CDTEF0Palo Pinto, TX0.350
May 156:50 PM CDTEF1Montague, TX1.02001$100,000
May 156:51 PM CDTEF1Montague, TX3.6240$125,000
May 157:03 PM CDTEF1Parker, TX1.9400$60,000
May 157:18 PM CDTEF0Montague, TX0.9150$40,000
May 157:22 PM CDTEF0Parker, TX0.570
May 157:35 PM CDTEF0Wise, TX0.725
May 157:53 PM CDTEF0Parker, TX1.5200$40,000
May 157:58 PM CDTEF4Granbury tornado, TX2.5400654$143 million
May 158:05 PM CDTEF0Parker, TX0.120$20,000
May 158:09 PM CDTEF1Hood, TX2.4300$360,000
May 158:19 PM CDTEF0Johnson, TX0.230$10,000
May 158:34 PM CDTEF0Hamilton, TX0.230
May 159:12 PM CDTEF3Johnson, TX7.81,7337$124 million
May 159:45 PM CDTEF0Johnson, TX1.3400
May 1512:05 AM CDTEF1Ellis, TX6.24001$650,000

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.