Alert archive / Texas / Mesoscale Discussions in 2014

Mesoscale Discussion 262

April 3, 201410 counties in Arkansas; 15 counties in Oklahoma; 49 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Apr 3, 2014, 1:46 PM CDT for 10 counties in Arkansas; 15 counties in Oklahoma; 49 counties in Texas. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued
Apr 3, 2014, 1:46 PM CDT (18:46 UTC)
Expired
Apr 3, 2014, 3:15 PM CDT
In force
89 min
Issued by
the Storm Prediction Center
Chance of a watch
95%
All 74 counties

Hempstead County, AR, Howard County, AR, Little River County, AR, Miller County, AR, Montgomery County, AR, Pike County, AR, Polk County, AR, Scott County, AR, Sebastian County, AR, Sevier County, AR, Atoka County, OK, Bryan County, OK, Choctaw County, OK, Coal County, OK, Haskell County, OK, Hughes County, OK, Johnston County, OK, Latimer County, OK, LeFlore County, OK, Marshall County, OK, McCurtain County, OK, McIntosh County, OK, Pittsburg County, OK, Pontotoc County, OK, Pushmataha County, OK, Anderson County, TX, Bell County, TX, Bosque County, TX, Bowie County, TX, Camp County, TX, Cass County, TX, Cherokee County, TX, Collin County, TX, Cooke County, TX, Coryell County, TX, Dallas County, TX, Delta County, TX, Denton County, TX, Ellis County, TX, Falls County, TX, Fannin County, TX, Franklin County, TX, Freestone County, TX, Grayson County, TX, Gregg County, TX, Harrison County, TX, Henderson County, TX, Hill County, TX, Hood County, TX, Hopkins County, TX, Hunt County, TX, Johnson County, TX, Kaufman County, TX, Lamar County, TX, Leon County, TX, Limestone County, TX, Marion County, TX, McLennan County, TX, Milam County, TX, Morris County, TX, Navarro County, TX, Parker County, TX, Rains County, TX, Red River County, TX, Robertson County, TX, Rockwall County, TX, Rusk County, TX, Smith County, TX, Somervell County, TX, Tarrant County, TX, Titus County, TX, Upshur County, TX, Van Zandt County, TX, Wood County, TX

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 6.8 hours before the alert went out and 140 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, Fort Worth, TX at 12:00Z on 2014-04-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2909 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, Fort Worth, TX at 12:00Z on 2014-04-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 297 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
2909 J/kg
Mixed-layer CIN
-177 J/kg
Mixed-layer LCL
701 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
297 m²/s²
0-3 km storm-relative helicity
345 m²/s²
Significant tornado parameter
0.6
Supercell composite
4.7

Open this sounding in Storm Lab

The text

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

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 3, 9:18 AM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Cleburne, Conway and 28 more57 min
Apr 3, 9:33 AM CDTTornado WatchSPCBaxter, Benton, Boone, Calhoun, Carroll, Clark and 38 more7 hr
Apr 3, 12:05 PM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Clark, Cleburne and 27 more55 min
Apr 3, 12:33 PM CDTMesoscale DiscussionSPCBenton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more87 min
Apr 3, 1:15 PM CDTTornado WatchSPCBenton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more8 hr
Apr 3, 1:50 PM CDTTornado WatchSPCHempstead, Howard, Lafayette, Little River, Miller, Nevada and 1 more7 hr
Apr 3, 3:48 PM CDTMesoscale DiscussionSPCBenton, Carroll, Crawford, Madison, Washington57 min
Apr 3, 4:34 PM CDTMesoscale DiscussionSPCBaxter, Boone, Calhoun, Clark, Cleburne, Conway and 35 more26 min
Apr 3, 4:58 PM CDTTornado WatchSPCBaxter, Boone, Calhoun, Clark, Cleburne, Conway and 31 more7 hr
Apr 3, 6:42 AM CDTMesoscale DiscussionSPCAtoka, Bryan, Choctaw, Love, McCurtain, Marshall and 1 more93 min
Apr 3, 2:30 PM CDTMesoscale DiscussionSPCBandera, Bexar, Blanco, Brown, Burnet, Comal and 23 more90 min

Nearby

Mesoscale Discussions in Texas, 2014Mesoscale Discussions in Oklahoma, 2014Mesoscale Discussions in Arkansas, 2014Every mesoscale discussion 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.