Tornadoes · United States · Texas · 2007

EF0 tornado, Morton, Texas, March 23, 2007

This EF0 tornado ran 0.5 miles across Cochran County on March 23, 2007, touching down at 11:18 PM CDT and reaching 75 yards wide. It killed nobody, and did $80,000 of property damage.

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
March 23, 2007
Touchdown
11:18 PM CDT (04:18 UTC)
Lifted
11:19 PM CDT (04:19 UTC)
On the ground
1 minutes
Path length
0.5 miles (0.8 km)
Path width
75 yards (69 m)
Deaths
0
Injuries
0
Property damage
$80,000
County
Cochran County
Touchdown point
33.659, -102.844
Lift-off point
33.664, -102.838
Record number
0703232218-01

What the Weather Service recorded

An active round of severe thunderstorms, including damaging tornadoes, affected a large portion of the Southern Plains of the U.S. during the afternoon and evening hours of the 23rd. Supercell thunderstorms with a history of producing deadly tornadoes propagated northeastward from the plains of eastern New Mexico into the extreme southwestern Texas Panhandle and the western South Plains of west Texas during the evening hours. As these storms moved eastward across the state line, convective modes transitioned from classic supercells toward mini-bow segments and line-echo-waves. Despite the linear nature of the storms, extreme wind shear resulted in at least five tornadoes across the western South Plains region.|Tornadoes were initially observed in the extreme southwestern Texas Panhandle and the northwestern South Plains around 20:00 CST. The hardest hit area was the Bovina vicinity in Parmer County, where a weak tornado struck the city resulting in minor structural damage. |Severe storms producing widespread wind damage and at least one strong tornado then impacted portions of Cochran, southern Bailey, and Lamb Counties during the late evening hours. Two cotton gins in Cochran County were severely damaged, and power outages were widespread. |No injuries were reported during the severe weather outbreak on the 23rd, but property damage estimates totaled more than $400,000.

A tornado was observed by the Levelland Fire Department southwest of Morton around 22:20 CST. A National Weather Service damage survey revealed that the tornado crossed Farm to Market Road 169 causing damage to the Southwest Gin. The southern end of the gin's main structure collapsed and a secondary metal structure was shifted off of its foundation. The debris was thrown north-northeastward along the tornado's path. No injuries were reported. Property damages totaled $80,000. Event times estimated by radar.

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

The warnings

8 minutes of warning. NWS LUB issued a tornado warning for this county at 04:10 UTC, 8 minutes before the tornado touched down, in force until 04:45 UTC.

The county was under a tornado watch, issued at 02:57 UTC and running to 08:57 UTC.

Issued (UTC)ExpiredProductOffice
20:00 UTC09:12 UTCFlash Flood WatchLUB
20:20 UTC02:57 UTCTornado WatchLUB
02:57 UTC08:57 UTCTornado WatchLUB
03:47 UTC04:45 UTCSevere Thunderstorm WarningLUB
04:10 UTC04:45 UTCTornado WarningLUB
04:47 UTC05:15 UTCSevere Thunderstorm WarningLUB

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 Moderate Risk, with a 0.10 chance of a tornado within 25 miles. The outlook in force was issued at 00:53 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.

Midland Regional, TX (KMAF), 00:00Z

4.3 hours before the tornado, 199 km from the path. March 24, 2007.

Skew-T log-pSkew-T log-p diagram, Midland Regional, TX at 00:00Z on 2007-03-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 2078 joules per kilogram, CIN -44, lifted condensation level 1058 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, Midland Regional, TX at 00:00Z on 2007-03-24The 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 151 square meters per square second, 0 to 6 km bulk shear 60 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
2078 J/kg
Mixed-layer CIN
-44 J/kg
Surface CAPE
2376 J/kg
Mixed-layer LCL
1058 m above ground
0-6 km bulk shear
60 kt
0-1 km bulk shear
19 kt
0-1 km storm-relative helicity
151 m²/s²
0-3 km storm-relative helicity
210 m²/s²
Significant tornado parameter
2.2
Supercell composite
8.1
0-3 km lapse rate
7.4 K/km

Open this sounding in Storm Lab

Midland Regional, TX (KMAF), 12:00Z

7.7 hours after it, 199 km from the path. March 24, 2007.

Skew-T log-pSkew-T log-p diagram, Midland Regional, TX at 12:00Z on 2007-03-24Temperature 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 -84782, lifted condensation level 1625 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, Midland Regional, TX at 12:00Z on 2007-03-24The 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 -178 square meters per square second, 0 to 6 km bulk shear 61 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
-84782 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
1625 m above ground
0-6 km bulk shear
61 kt
0-1 km bulk shear
18 kt
0-1 km storm-relative helicity
-178 m²/s²
0-3 km storm-relative helicity
95 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
4.6 K/km

Open this sounding in Storm Lab

The surface observations

Clovis Muni (CVN), 88 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
02:35 UTC57.253.610° 8 kt1011.5TS
02:55 UTC51.848.2310° 17 kt271012.2TS
03:15 UTC51.848.2300° 20 kt261012.5VCTS
03:35 UTC51.848.2330° 17 kt241013.2TS
03:55 UTC51.848.2340° 16 kt231014.2TS
04:15 UTC51.848.210° 14 kt1014.2
04:35 UTC5048.2360° 17 kt1013.2VCTS
04:55 UTC5048.2350° 16 kt221013.2TS
05:15 UTC5048.2360° 11 kt171014.2TS
05:35 UTC5048.220° 13 kt211014.2TS
05:55 UTC5048.210° 16 kt1013.9
06:15 UTC505020° 16 kt261013.2VCTS

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

The radar

The Lubbock radar (KLBB), 95 km away, was scanning. The volume nearest the touchdown began at 04:18 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
04:20 UTCTORNADO7 Sw MortonCochran, TXLAW ENFORCEMENT REPORTS SOUTHWEST GIN DESTROYED 7 SW MORTON. HOUSE DAMAGED 3 NW MORTON. MULTIPLE REPORTS FROM LOCAL FIRE DEPARTMENTS OF TORNADO SIGHTINGS BETWEEN 2320 AND 2335 PM CDT. NO INJURIES REPORTED.

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

This ground now

The live radar over the trackEvery 2007 tornado in TexasEvery tornado in Texas since 1950Warnings in force in Texas nowThe forecast where you are

The other tornadoes of March 23, 2007

17 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
March 233:12 PM MDTEF1Quay, NM2.720012$3.5 million
March 235:11 PM CDTEF0Texas, OK1.4440
March 234:32 PM MDTEF0Lea, NM3.030
March 235:07 PM MDTEF2Lea, NM8.4880$28,000
March 235:36 PM MDTEF0Lea, NM1.0100
March 235:45 PM MDTEF0Lea, NM1.075$2,000
March 236:05 PM MDTEF0Roosevelt, NM0.670$20,000
March 237:30 PM CDTEF0Pecos, TX2.075
March 237:24 PM MDTEF0Roosevelt, NM0.670
March 237:28 PM MDTEF0Roosevelt, NM0.250
March 237:30 PM MDTEF2Roosevelt, NM12.4350233$19 million
March 238:59 PM CDTEF0Parmer, TX1.050
March 238:00 PM MDTEF0Eddy, NM0.120
March 239:12 PM CDTEF0Bailey, TX0.350$10,000
March 239:16 PM CDTEF0Upton, TX2.050
March 239:38 PM CDTEF0Parmer, TX1.840$75,000
March 2311:22 PM CDTEF2Cochran, TX1.5150$175,000

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.