Tornadoes · United States · Texas · 2018

EF0 tornado, Mobeetie, Texas, May 29, 2018

This EF0 tornado ran 0.1 miles across Wheeler County on May 29, 2018, touching down at 6:09 PM CDT and reaching 50 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 29, 2018
Touchdown
6:09 PM CDT (23:09 UTC)
Lifted
6:10 PM CDT (23:10 UTC)
On the ground
1 minutes
Path length
0.1 miles (0.2 km)
Path width
50 yards (46 m)
Deaths
0
Injuries
0
County
Wheeler County
Touchdown point
35.480, -100.430
Lift-off point
35.480, -100.430
Record number
1805291709-01

What the Weather Service recorded

Dryline setup across the eastern Panhandles in-conjunction with residual outflow boundaries from convection from the previous day set the stages for supercell development. SBCAPE values of 2000-3000 J/kg in a very favorable low level moisture environment ahead of the dryline along with effective SRH of 100-200 m2/s2 due to good low level directional shear. Two supercells developed in the afternoon hours on the 29th in the eastern TX Panhandle. The northern storm became a left mover and produced hail up to golf balls with damaging wind gusts in the northeastern combined Panhandles before exiting the region. The right mover moved through the southeast TX Panhandle was a larger and stronger storm. This supercell had strong rotation and eventually dropped a tornado in two different locations in its path; both rated EF-0, along with very large hail up to 3 in diameter in the town of Wheeler.

A brief tornado touchdown was observed by the Wheeler County Judge and a storm chaser in the area. The touchdown occurred in an open field with nothing known to have been damaged as a result.

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

The warnings

38 minutes of warning. NWS AMA issued a tornado warning for this county at 22:31 UTC, 38 minutes before the tornado touched down, in force until 23:15 UTC.

Issued (UTC)ExpiredProductOffice
21:46 UTC22:45 UTCSevere Thunderstorm WarningAMA
22:29 UTC00:00 UTCSevere Thunderstorm WarningAMA
22:31 UTC23:15 UTCTornado WarningAMA
23:05 UTC23:45 UTCTornado WarningAMA
23:21 UTC23:45 UTCSevere Thunderstorm WarningAMA
23:26 UTC00:45 UTCSevere Thunderstorm WarningAMA
01:32 UTC03:30 UTCFlood AdvisoryAMA

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 Marginal Risk, with a 0.02 chance of a tornado within 25 miles. The outlook in force was issued at 19:58 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.

Amarillo Airport, TX (KAMA), 12:00Z

11.2 hours before the tornado, 118 km from the path. May 29, 2018.

Skew-T log-pSkew-T log-p diagram, Amarillo Airport, TX at 12:00Z on 2018-05-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 383 joules per kilogram, CIN -405, lifted condensation level 1427 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, Amarillo Airport, TX at 12:00Z on 2018-05-29The 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 388 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
383 J/kg
Mixed-layer CIN
-405 J/kg
Surface CAPE
610 J/kg
Mixed-layer LCL
1427 m above ground
0-6 km bulk shear
45 kt
0-1 km bulk shear
25 kt
0-1 km storm-relative helicity
388 m²/s²
0-3 km storm-relative helicity
363 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
4.2 K/km

Open this sounding in Storm Lab

Amarillo Airport, TX (KAMA), 00:00Z

0.8 hours after it, 118 km from the path. May 30, 2018.

Skew-T log-pSkew-T log-p diagram, Amarillo Airport, TX at 00:00Z on 2018-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 260 joules per kilogram, CIN -36, lifted condensation level 2941 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, Amarillo Airport, TX at 00:00Z on 2018-05-30The 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 30 square meters per square second, 0 to 6 km bulk shear 34 knots.1939587897Sfc1 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
260 J/kg
Mixed-layer CIN
-36 J/kg
Surface CAPE
468 J/kg
Mixed-layer LCL
2941 m above ground
0-6 km bulk shear
34 kt
0-1 km bulk shear
9 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
116 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
9.8 K/km

Open this sounding in Storm Lab

The radar

The Amarillo radar (KAMA), 119 km away, was scanning. The volume nearest the touchdown began at 23:08 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
22:13 UTCHAIL 1MiamiRoberts, TXHAIL RANGING FROM DIME TO QUARTER SIZE REPORTED.
22:31 UTCHAIL 2.757 Sse MiamiGray, TXBASEBALL SIZE HAIL REPORTED.
22:32 UTCHAIL 1.758 Wnw MobeetieGray, TX
22:33 UTCFUNNEL CLOUD9 W MobeetieGray, TXSTORM CHASER VIDEO OF A FUNNEL CLOUD.
22:35 UTCHAIL 2MobeetieWheeler, TXHAIL FROM GOLF BALL TO HEN EGG SIZE FELL FOR 45 MINUTES. REPORT RECEIVED VIA FACEBOOK MESSANGER.
22:36 UTCTORNADO7 Wsw MobeetieGray, TXCHASERS PHOTOGRAPHED A BRIEF TORNADO TOUCHDOWN IN OPEN COUNTRY. NO DAMAGE REPORTED.
22:57 UTCHAIL 14 Se MobeetieWheeler, TXREPORT RECEIVED FROM SPOTTER NETWORK.
23:09 UTCTORNADO4 S MobeetieWheeler, TXCOUNTY OFFICIALS REPORT BRIEF TORNADO TOUCHDOWN NEAR TX HIGHWAY 152 AND FM 3182. THIS WAS ALSO COOBORATED BY A SKYCAM AND CHASER REPORTS IN THE AREA. TORNADO WAS IN OPEN COUNTRY AND NO DAMAGE WAS REPORTED.
23:13 UTCTORNADO4 S MobeetieWheeler, TXCOUNTY OFFICIALS REPORT BRIEF TORNADO TOUCHDOWN NEAR TX HIGHWAY 152 AND FM 3182. THIS WAS ALSO COOBORATED BY A SKYCAM AND CHASER REPORTS IN THE AREA. TORNADO WAS IN OPEN COUNTRY AND NO DAMAGE WAS REPORTED.
23:17 UTCHAIL 13 Se WheelerWheeler, TXREPORT RECEIVED VIA SPOTTER NETWORK
23:20 UTCHAIL 31 W WheelerWheeler, TXREPORT RECEIVED VIA TWITTER.
23:26 UTCFUNNEL CLOUD3 S WheelerWheeler, TXSTORM CHASER VIDEO OF FUNNEL CLOUD
23:45 UTCHAIL 3WheelerWheeler, TXREPORTED RELAYED FROM BROADCAST MEDIA.
23:48 UTCHAIL 2.75WheelerWheeler, TXBROADCAST MEDIA RELAYED REPORT OF BASEBALL SIZE HAIL.

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

This ground now

The live radar over the trackEvery 2018 tornado in TexasEvery tornado in Texas since 1950Warnings in force in Texas nowThe forecast where you are

The other tornadoes of May 29, 2018

6 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
May 293:58 PM CDTEF0Story, IA0.330
May 294:44 PM CDTEF0Gray, KS4.1100
May 295:36 PM CDTEF0Gray, TX0.150
May 298:00 PM EDTEF0Miami-Dade, FL0.325
May 297:25 PM CDTEF1Woods, OK2.520$10,000
May 298:12 PM CDTEF0Republic, KS0.330

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.