Alert archive / Texas / Tornado Watches in 2014

Tornado Watch 255

June 7, 201434 counties in Texas

The Storm Prediction Center issued this tornado watch at Jun 7, 2014, 5:44 PM CDT for 34 counties in Texas. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Jun 7, 2014, 5:44 PM CDT (22:44 UTC)
Expired
Jun 8, 2014, 1:00 AM CDT
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
3.5 in
Strongest gust expected
65 kt
All 34 counties

Armstrong County, TX, Bailey County, TX, Briscoe County, TX, Carson County, TX, Castro County, TX, Childress County, TX, Cochran County, TX, Collingsworth County, TX, Cottle County, TX, Crosby County, TX, Deaf Smith County, TX, Dickens County, TX, Donley County, TX, Floyd County, TX, Garza County, TX, Gray County, TX, Hale County, TX, Hall County, TX, Hockley County, TX, Kent County, TX, King County, TX, Lamb County, TX, Lubbock County, TX, Lynn County, TX, Motley County, TX, Oldham County, TX, Parmer County, TX, Potter County, TX, Randall County, TX, Stonewall County, TX, Swisher County, TX, Terry County, TX, Wheeler County, TX, Yoakum County, TX

The radar

The Amarillo radar (KAMA), 63 km from the middle of the area, began a volume at 22:45 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
50%
One or more EF2 to EF5 tornadoes
30%
Ten or more severe wind reports
50%
One or more gusts of 65 knots or more
40%
Ten or more severe hail reports
70%
One or more hailstones of 2 inches or more
50%
Six or more combined severe hail and wind reports
95%

Warnings issued inside it

48 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Jun 7, 5:56 PM CDTSevere Thunderstorm WarningLUBFloyd49 min
Jun 7, 6:01 PM CDTTornado WarningLUBFloyd14 min
Jun 7, 6:32 PM CDTTornado WarningLUBFloyd28 min
Jun 7, 6:49 PM CDTSevere Thunderstorm WarningLUBMotley41 min
Jun 7, 7:28 PM CDTSevere Thunderstorm WarningLUBDickens, Motley47 min
Jun 7, 8:10 PM CDTSevere Thunderstorm WarningLUBYoakum50 min
Jun 7, 8:13 PM CDTSevere Thunderstorm WarningLUBCottle, Dickens, King, Motley32 min
Jun 7, 8:41 PM CDTSevere Thunderstorm WarningLUBCottle, Dickens, King, Motley19 min
Jun 7, 8:47 PM CDTSevere Thunderstorm WarningLUBCochran, Hockley, Terry, Yoakum43 min
Jun 7, 8:48 PM CDTSevere Thunderstorm WarningAMADeaf Smith57 min
Jun 7, 8:50 PM CDTSevere Thunderstorm WarningAMACollingsworth, Donley, Gray, Wheeler55 min
Jun 7, 8:53 PM CDTSevere Thunderstorm WarningLUBParmer22 min
Jun 7, 8:56 PM CDTSevere Thunderstorm WarningLUBCottle, Dickens, King, Motley19 min
Jun 7, 9:00 PM CDTSevere Thunderstorm WarningAMAArmstrong, Donley60 min
Jun 7, 9:08 PM CDTSevere Thunderstorm WarningLUBBailey, Parmer37 min
Jun 7, 9:13 PM CDTTornado WarningAMACollingsworth, Donley47 min
Jun 7, 9:13 PM CDTSevere Thunderstorm WarningLUBCottle, King, Motley32 min
Jun 7, 9:20 PM CDTTornado WarningLUBParmer25 min
Jun 7, 9:27 PM CDTSevere Thunderstorm WarningLUBCochran, Hockley, Lamb, Terry, Yoakum48 min
Jun 7, 9:42 PM CDTSevere Thunderstorm WarningLUBBailey, Castro, Lamb, Parmer48 min
Jun 7, 9:46 PM CDTSevere Thunderstorm WarningAMACollingsworth, Wheeler59 min
Jun 7, 9:50 PM CDTTornado WarningLUBBailey, Lamb25 min
Jun 7, 9:57 PM CDTTornado WarningLUBCastro18 min
Jun 7, 10:01 PM CDTSevere Thunderstorm WarningAMACollingsworth, Donley59 min
Jun 7, 10:09 PM CDTSevere Thunderstorm WarningLUBHale, Hockley, Lamb, Lubbock21 min
Jun 7, 10:13 PM CDTTornado Warning Tornado observedLUBLamb17 min
Jun 7, 10:29 PM CDTTornado WarningLUBLamb16 min
Jun 7, 10:31 PM CDTSevere Thunderstorm WarningLUBCastro, Hale, Lamb, Swisher44 min
Jun 7, 10:32 PM CDTSevere Thunderstorm WarningLUBHale, Lamb, Lubbock28 min
Jun 7, 10:38 PM CDTFlash Flood WarningLUBCastro112 min
Jun 7, 10:46 PM CDTSevere Thunderstorm WarningLUBLamb14 min
Jun 7, 10:50 PM CDTSevere Thunderstorm WarningLUBHockley40 min
Jun 7, 10:56 PM CDTFlash Flood WarningAMACollingsworth, Donley2 hr
Jun 7, 10:58 PM CDTSevere Thunderstorm WarningAMACollingsworth32 min
Jun 7, 11:00 PM CDTSevere Thunderstorm WarningLUBHale, Hockley, Lamb30 min
Jun 7, 11:07 PM CDTSevere Thunderstorm WarningLUBBriscoe, Castro, Floyd, Hale, Swisher38 min
Jun 7, 11:11 PM CDTSevere Thunderstorm WarningLUBHockley, Lubbock34 min
Jun 7, 11:17 PM CDTSevere Thunderstorm WarningLUBChildress, Hall28 min
Jun 7, 11:21 PM CDTSevere Thunderstorm WarningLUBBailey24 min
Jun 7, 11:28 PM CDTSevere Thunderstorm WarningLUBBriscoe, Crosby, Floyd, Hale, Hall, Lubbock and 1 more47 min
Jun 7, 11:28 PM CDTSevere Thunderstorm WarningLUBHockley, Lubbock, Lynn, Terry17 min
Jun 7, 11:31 PM CDTSevere Thunderstorm WarningAMAArmstrong, Carson, Potter, Randall48 min
Jun 7, 11:37 PM CDTSevere Thunderstorm WarningLUBChildress23 min
Jun 7, 11:44 PM CDTSevere Thunderstorm WarningLUBLubbock, Lynn, Terry46 min
Jun 7, 11:58 PM CDTSevere Thunderstorm WarningLUBCrosby, Floyd, Hale, Lubbock47 min
Jun 8, 12:29 AM CDTSevere Thunderstorm WarningLUBGarza, Lynn, Terry46 min
Jun 8, 12:33 AM CDTSevere Thunderstorm WarningLUBCrosby, Garza, Lubbock, Lynn42 min
Jun 8, 1:00 AM CDTFlash Flood WarningAMACollingsworth2 hr

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 10.7 hours before the alert went out and 63 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Amarillo Airport, TX at 12:00Z on 2014-06-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 118 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Amarillo Airport, TX at 12:00Z on 2014-06-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 square meters per square second.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.
Mixed-layer CAPE
118 J/kg
Mixed-layer CIN
-245 J/kg
Mixed-layer LCL
1654 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
-110 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

096 
WWUS20 KWNS 072250
SEL5  
SPC WW 072250
TXZ000-080600-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 255
NWS STORM PREDICTION CENTER NORMAN OK
545 PM CDT SAT JUN 7 2014

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  THE TEXAS SOUTH PLAINS AND SOUTHERN PARTS OF THE TEXAS PANHANDLE

* EFFECTIVE THIS SATURDAY AFTERNOON AND SUNDAY MORNING FROM 545
  PM UNTIL 100 AM CDT.

* PRIMARY THREATS INCLUDE...
  A FEW TORNADOES AND A COUPLE INTENSE TORNADOES POSSIBLE
  SCATTERED LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL EVENTS
    TO 3.5 INCHES IN DIAMETER POSSIBLE
  SCATTERED DAMAGING WINDS AND ISOLATED SIGNIFICANT GUSTS TO 75
    MPH POSSIBLE

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 80 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 80 MILES WEST NORTHWEST OF
PLAINVIEW TEXAS TO 25 MILES SOUTHEAST OF CHILDRESS TEXAS.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU5).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 252...WW 253...WW 254...

DISCUSSION...SCTD TSTMS/SUPERCELLS EXPECTED TO FORM INVOF STALLED
WNW-ESE OUTFLOW BOUNDARIES ACROSS W CNTRL TX THROUGH THIS EVE...WITH
ADDITIONAL STORMS EXPECTED TO MOVE INTO REGION FROM ERN NM.
COMBINATION OF MODEST LARGE-SCALE FORCING FOR ASCENT WITH STEEP
MID-LVL LAPSE RATES...MOISTURE-RICH ESE SFC FLOW...AND 35 KT WSWLY
500 MB FLOW SUGGESTS POTENTIAL FOR A FEW LONG-LIVED SUPERCELLS WITH
A POTENTIAL FOR VERY LARGE HAIL...TORNADOES...AND DMGG WIND.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 65 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 29025.


...CORFIDI

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 6, 7:09 PM CDTTornado WatchSPCArmstrong, Carson, Collingsworth, Dallam, Deaf Smith, Donley and 14 more6 hr
Jun 7, 1:06 PM CDTMesoscale DiscussionSPCClay, Montague, Wichita, Wilbarger2 hr
Jun 7, 3:27 PM CDTMesoscale DiscussionSPCBailey, Briscoe, Castro, Cochran, Crosby, Deaf Smith and 9 more2 hr
Jun 7, 5:51 PM CDTMesoscale DiscussionSPCAndrews, Borden, Brewster, Crane, Dawson, Ector and 17 more114 min
Jun 7, 6:16 PM CDTSevere Thunderstorm WatchSPCAndrews, Borden, Crane, Dawson, Ector, Gaines and 8 more9 hr

Nearby

Tornado Watches in Texas, 2014Every tornado watch in 2014

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.