Alert archive / Texas / Tornado Watches in 2013

Tornado Watch 254

May 30, 201318 counties in Texas

The Storm Prediction Center issued this tornado watch at May 30, 2013, 2:51 PM CDT for 18 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 30, 2013, 2:51 PM CDT (19:51 UTC)
Expired
May 30, 2013, 8:37 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
2.5 in
Strongest gust expected
60 kt

Counties Archer County, TX, Baylor County, TX, Clay County, TX, Cooke County, TX, Fannin County, TX, Grayson County, TX, Haskell County, TX, Jack County, TX, Jones County, TX, Lamar County, TX, Montague County, TX, Palo Pinto County, TX, Shackelford County, TX, Stephens County, TX, Throckmorton County, TX, Wichita County, TX, Wise County, TX, Young County, TX

What SPC expected

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

Two or more tornadoes
40%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
30%
One or more gusts of 65 knots or more
10%
Ten or more severe hail reports
30%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
60%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 30, 5:14 PM CDTSevere Thunderstorm WarningOUNClay46 min
May 30, 5:55 PM CDTSevere Thunderstorm WarningFWDMontague65 min
May 30, 6:59 PM CDTSevere Thunderstorm WarningFWDCooke, Montague61 min
May 30, 7:02 PM CDTTornado WarningFWDMontague28 min
May 30, 7:30 PM CDTTornado WarningFWDCooke, Montague30 min

Discussions around it

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

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 7.9 hours before the alert went out and 234 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, Norman, OK at 12:00Z on 2013-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2281 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, Norman, OK at 12:00Z on 2013-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 366 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
2281 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
542 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
366 m²/s²
0-3 km storm-relative helicity
703 m²/s²
Significant tornado parameter
4.2
Supercell composite
22.1

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 29, 7:36 PM CDTMesoscale DiscussionSPCCollingsworth, Gray, Hansford, Hemphill, Hutchinson, Lipscomb and 3 more84 min
May 30, 3:34 AM CDTMesoscale DiscussionSPCBrown, Callahan, Coleman, Comanche, Eastland, Erath and 1 more116 min
May 30, 12:20 PM CDTMesoscale DiscussionSPCArcher, Baylor, Clay, Montague, Wichita, Wilbarger2 hr
May 30, 5:52 PM CDTMesoscale DiscussionSPCArcher, Clay, Cooke, Jack, Montague, Palo Pinto and 7 more113 min

Nearby

Tornado Watches in Texas, 2013Every tornado watch in 2013

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.