Tornadoes · United States · Texas · 2019

Unrated tornado, Halfway, Texas, May 7, 2019

This Unrated tornado ran 0.0 miles across Hale County on May 7, 2019, touching down at 4:27 PM CDT and reaching 30 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
May 7, 2019
Touchdown
4:27 PM CDT (21:27 UTC)
Path length
0.0 miles (0.0 km)
Path width
30 yards (27 m)
Deaths
0
Injuries
0
County
Hale County
Touchdown point
34.246, -101.976
Lift-off point
34.246, -101.976
Record number
1905071527-01

The damage survey

1 damage points were recorded along this path by NWS LUB, in the Damage Assessment Toolkit the survey teams carry.

  • Very brief tornado photographed by storm chasers.

Survey points are preliminary and are the raw material the published rating was built from. Source: NWS Damage Assessment Toolkit.

What the Weather Service recorded

By 1400 CST on the seventh, another consecutive day of severe weather was underway across the South Plains of West Texas. A dryline mixed into West Texas and stalled around the US Highway 385 corridor. Discrete supercells developed along the entire dryline through the South Plains. Fortunately, many of these thunderstorms did not produce severe hail. The strongest thunderstorm of the day initially developed in Lamb County and slowly moved northeast into Hale and Swisher Counties. Numerous storm chasers observed this storm and documented several tornadoes during its life cycle. The first tornado was observed approximately five miles southwest of Edmonson in Hale County. However, the NWS storm survey team was unable to locate any damage due to its brief duration and lack of damage indicators. Therefore, an EFU rating was assigned. The next tornado was observed several miles southwest of Tulia in Swisher County. Although this multi vortex tornado persisted for several minutes, no damage indicators were impacted, so an EFU rating was assigned to this tornado as well. The third tornado was observed about 4-5 miles northwest of Vigo Park and was the largest of the three. Similar to the other two tornadoes, no damage indicators were found by the NWS storm survey team, so a rating of EFU was assigned. Extremely strong rear flank downdraft winds were observed with this third tornado west of Vigo Park near the intersection of Farm to Market Roads 146 and 2301. A metal barn was partially destroyed and 19 wood transmission lines were snapped. Due to the slow moving nature of these storms, extremely heavy rainfall occurred in central Swisher County which brought an estimated three to six inches of rainfall over a short period of time. A NWS storm survey revealed many paved roads that had four to five feet of water running over the roadway. Several other roads still had mud from nearby fields on the roadway which indicates where water was over the roadway.

Storm chasers observed and photographed a brief tornado approximately five miles southwest of Edmonson in Hale County. The NWS survey team was unable to locate any damage.

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

The warnings

4 minutes of warning. NWS LUB issued a tornado warning for this county at 21:23 UTC, 4 minutes before the tornado touched down, in force until 21:52 UTC.

The county was under a tornado watch, issued at 20:00 UTC and running to 02:50 UTC.

Issued (UTC)ExpiredProductOffice
19:59 UTC21:00 UTCSevere Thunderstorm WarningLUB
20:00 UTC02:50 UTCTornado WatchLUB
20:54 UTC22:00 UTCSevere Thunderstorm WarningLUB
21:04 UTC23:00 UTCFlood AdvisoryLUB
21:23 UTC21:52 UTCTornado WarningLUB
23:39 UTC00:15 UTCSevere Thunderstorm WarningLUB
01:21 UTC03:15 UTCFlood AdvisoryLUB

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 19:41 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

9.5 hours before the tornado, 112 km from the path. May 7, 2019.

Skew-T log-pSkew-T log-p diagram, Amarillo Airport, TX at 12:00Z on 2019-05-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 334 joules per kilogram, CIN -280, lifted condensation level 2060 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 2019-05-07The 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 6 square meters per square second, 0 to 6 km bulk shear 22 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
334 J/kg
Mixed-layer CIN
-280 J/kg
Surface CAPE
928 J/kg
Mixed-layer LCL
2060 m above ground
0-6 km bulk shear
22 kt
0-1 km bulk shear
9 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
49 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
5.0 K/km

Open this sounding in Storm Lab

The surface observations

Plainview (PVW), 25 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
19:35 UTC7559.5160° 18 kt221011.9
19:55 UTC74.759.7170° 16 kt211011.2
20:15 UTC73.458.5160° 16 kt221011.2
20:35 UTC7358.3200° 14 kt171011.2
20:55 UTC7358.6160° 18 kt211009.8
21:15 UTC7358.8160° 17 kt211009.8
21:35 UTC73.258.5160° 18 kt251009.1TS
21:55 UTC7359160° 21 kt271008.1
22:15 UTC73.658170° 22 kt291007.8
22:35 UTC72.558.3160° 21 kt271007.5VCTS
22:55 UTC70.559160° 18 kt281007.5
23:15 UTC7059.4170° 18 kt231008.5VCTS

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

The radar

The Lubbock radar (KLBB), 68 km away, was scanning. The volume nearest the touchdown began at 21:27 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
21:03 UTCHAIL 15 N OltonLamb, TX
21:27 UTCTORNADO7 N HalfwayHale, TX
22:12 UTCTORNADO6 Sw TuliaSwisher, TX
22:25 UTCTORNADO9 Sw TuliaSwisher, TXVIA TWITTER PIC
22:56 UTCTORNADO9 Ne TuliaSwisher, TX
22:59 UTCTORNADO10 Ne TuliaSwisher, TXRAIN WRAPPED TORNADO
00:15 UTCFLASH FLOOD6 W TuliaSwisher, TXFLOODING 5 - 7 MILES WEST OF TULIA ALONG S.H. 86. ALSO FLOODING NW OF TULIA WEST OF FM 1424.

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

This ground now

The live radar over the trackEvery 2019 tornado in TexasEvery tornado in Texas since 1950Warnings in force in Texas nowThe forecast where you are

The other tornadoes of May 7, 2019

22 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
May 73:36 PM CDTUnratedHutchinson, TX2.9100
May 74:48 PM CDTEF0Pecos, TX2.0200
May 74:49 PM CDTEF0Hutchinson, TX0.130
May 74:50 PM CDTEF0Ochiltree, TX0.020
May 74:00 PM MDTEF0Twin Falls, ID1.510
May 75:11 PM CDTUnratedSwisher, TX1.5600
May 75:16 PM CDTEF0Hutchinson, TX5.450
May 75:56 PM CDTUnratedSwisher, TX5.3150
May 76:27 PM CDTEF0Armstrong, TX11.5100
May 76:56 PM CDTEF0Lipscomb, TX0.120
May 77:25 PM CDTEF0Donley, TX1.173
May 77:35 PM CDTEF0Pecos, TX4.1450
May 77:48 PM CDTEF0Donley, TX4.2500
May 78:12 PM CDTUnratedBeckham, OK2.0100
May 78:32 PM CDTUnratedCuster, OK2.050
May 710:10 PM CDTUnratedBeckham, OK0.530
May 711:19 PM CDTEF0Butler, KS1.9100
May 711:23 PM CDTEF2Kiowa, OK3.7300$75,000
May 711:32 PM CDTEF2Washita, OK8.8400$120,000
May 711:46 PM CDTUnratedWashita, OK0.540
May 711:57 PM CDTEF1Kay, OK2.160$25,000
May 712:27 AM CDTUnratedKiowa, OK0.530

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.