Alert archive / Texas / Mesoscale Discussions in 2015

Mesoscale Discussion 589

May 10, 2015Little River County, Arkansas; 64 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 10, 2015, 2:42 PM CDT for Little River County, Arkansas; 64 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 10, 2015, 2:42 PM CDT (19:42 UTC)
Expired
May 10, 2015, 4:45 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 65 counties

Little River County, AR, Bandera County, TX, Bell County, TX, Blanco County, TX, Bosque County, TX, Bowie County, TX, Brown County, TX, Burnet County, TX, Camp County, TX, Collin County, TX, Comal County, TX, Comanche County, TX, Coryell County, TX, Dallas County, TX, Delta County, TX, Denton County, TX, Edwards County, TX, Ellis County, TX, Erath County, TX, Falls County, TX, Fannin County, TX, Franklin County, TX, Freestone County, TX, Gillespie County, TX, Grayson County, TX, Hamilton County, TX, Hays County, TX, Henderson County, TX, Hill County, TX, Hood County, TX, Hopkins County, TX, Hunt County, TX, Johnson County, TX, Kaufman County, TX, Kendall County, TX, Kerr County, TX, Kimble County, TX, Lamar County, TX, Lampasas County, TX, Limestone County, TX, Llano County, TX, Mason County, TX, McCulloch County, TX, McLennan County, TX, Menard County, TX, Milam County, TX, Mills County, TX, Morris County, TX, Navarro County, TX, Parker County, TX, Rains County, TX, Real County, TX, Red River County, TX, Rockwall County, TX, San Saba County, TX, Smith County, TX, Somervell County, TX, Tarrant County, TX, Titus County, TX, Travis County, TX, Upshur County, TX, Val Verde County, TX, Van Zandt County, TX, Williamson County, TX, Wood County, TX

The radar

The Ft Hood radar (KGRK), 111 km from the middle of the area, began a volume at 19:45 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.

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 7.7 hours before the alert went out and 190 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 2015-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2108 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 2015-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 259 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
2108 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
628 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
259 m²/s²
0-3 km storm-relative helicity
279 m²/s²
Significant tornado parameter
2.8
Supercell composite
14.7

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
May 9, 8:46 PM CDTMesoscale DiscussionSPCCalhoun, Clark, Cleveland, Columbia, Dallas, Grant and 6 more59 min
May 10, 2:39 AM CDTMesoscale DiscussionSPCCleburne, Conway, Franklin, Independence, Jackson, Johnson and 4 more66 min
May 10, 6:44 AM CDTMesoscale DiscussionSPCHoward, Little River, Polk, Sevier2 hr
May 10, 8:56 AM CDTMesoscale DiscussionSPCCrawford, Polk, Sebastian2 hr
May 10, 9:28 AM CDTTornado WatchSPCBenton, Boone, Carroll, Crawford, Franklin, Howard and 13 more6 hr
May 10, 10:19 AM CDTTornado WatchSPCHoward, Little River, Sevier13 hr
May 10, 11:25 AM CDTMesoscale DiscussionSPCClark, Cleburne, Conway, Dallas, Faulkner, Franklin and 26 more2 hr
May 10, 12:58 PM CDTTornado WatchSPCCrawford, Franklin, Sebastian10 hr
May 10, 5:05 PM CDTMesoscale DiscussionSPCClay, Cleburne, Conway, Craighead, Cross, Faulkner and 19 more115 min
May 10, 6:15 PM CDTMesoscale DiscussionSPCColumbia, Hempstead, Howard, Lafayette, Little River, Miller and 2 more90 min
May 9, 7:49 PM CDTMesoscale DiscussionSPCCollin, Cooke, Dallas, Delta, Denton, Eastland and 17 more56 min
May 9, 8:06 PM CDTMesoscale DiscussionSPCDimmit, Frio, Kinney, La Salle, Maverick, Uvalde and 2 more84 min
May 9, 9:38 PM CDTMesoscale DiscussionSPCBrown, Callahan, Coke, Coleman, Comanche, Concho and 12 more2 hr
May 9, 10:51 PM CDTSevere Thunderstorm WatchSPCBosque, Brown, Callahan, Coke, Coleman, Comanche and 33 more10 hr
May 10, 2:06 AM CDTMesoscale DiscussionSPCBrown, Callahan, Coleman, Concho, Crockett, Irion and 6 more54 min
May 10, 2:55 AM CDTSevere Thunderstorm WatchSPCBosque, Collin, Comanche, Coryell, Dallas, Denton and 22 more6 hr
May 10, 4:20 AM CDTMesoscale DiscussionSPCArcher, Baylor, Brown, Clay, Collin, Comanche and 28 more55 min
May 10, 9:49 AM CDTMesoscale DiscussionSPCBell, Blanco, Bosque, Brown, Burnet, Camp and 49 more2 hr
May 10, 12:33 PM CDTMesoscale DiscussionSPCArcher, Clay, Montague2 hr

Nearby

Mesoscale Discussions in Texas, 2015Mesoscale Discussions in Arkansas, 2015Every mesoscale discussion in 2015

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.