Alert archive / Texas / Mesoscale Discussions in 2022

Mesoscale Discussion 2014

December 13, 2022Little River County, Miller County, Arkansas; 31 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Dec 13, 2022, 11:41 AM CST for Little River County, Miller County, Arkansas; 31 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Dec 13, 2022, 11:41 AM CST (17:41 UTC)
Expired
Dec 13, 2022, 1:45 PM CST
In force
2 hr
Issued by
the Storm Prediction Center
Concerning
Tornado watch 582
All 33 counties

Little River County, AR, Miller County, AR, Anderson County, TX, Bowie County, TX, Camp County, TX, Cass County, TX, Cherokee County, TX, Delta County, TX, Falls County, TX, Franklin County, TX, Freestone County, TX, Gregg County, TX, Harrison County, TX, Henderson County, TX, Hopkins County, TX, Houston County, TX, Kaufman County, TX, Leon County, TX, Limestone County, TX, Marion County, TX, McLennan County, TX, Morris County, TX, Navarro County, TX, Panola County, TX, Rains County, TX, Red River County, TX, Robertson County, TX, Rusk County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Van Zandt County, TX, Wood County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 148 km from the middle of the area, began a volume at 17:41 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 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, 5.7 hours before the alert went out and 155 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 2022-12-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 943 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 2022-12-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 405 square meters per square second.1939587897117Sfc1 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
943 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
528 m above ground
0-6 km bulk shear
66 kt
0-1 km storm-relative helicity
405 m²/s²
0-3 km storm-relative helicity
550 m²/s²
Significant tornado parameter
3.1
Supercell composite
10.8

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 13, 8:59 AM CSTMesoscale DiscussionSPCLittle River, Sevier2 hr
Dec 13, 9:07 AM CSTTornado WatchSPCHempstead, Howard, Little River, Miller, Pike, Polk and 1 more8 hr
Dec 13, 1:33 PM CSTMesoscale DiscussionSPCColumbia, Lafayette, Miller, Nevada, Ouachita, Union117 min
Dec 13, 2:15 PM CSTTornado WatchSPCBradley, Calhoun, Clark, Cleveland, Columbia, Dallas and 4 more8 hr
Dec 13, 5:04 PM CSTMesoscale DiscussionSPCAshley, Bradley, Calhoun, Chicot, Cleveland, Columbia and 5 more116 min
Dec 12, 7:12 PM CSTMesoscale DiscussionSPCHansford, Hutchinson, Ochiltree, Roberts3 hr
Dec 12, 8:25 PM CSTTornado WatchSPCArmstrong, Carson, Collingsworth, Donley, Gray, Hansford and 6 more4 hr
Dec 12, 9:10 PM CSTMesoscale DiscussionSPCBriscoe, Childress, Collingsworth, Cottle, Crosby, Dickens and 8 more3 hr
Dec 12, 9:54 PM CSTTornado WatchSPCArcher, Baylor, Clay, Foard, Hardeman, Knox and 2 more6 hr
Dec 12, 11:24 PM CSTMesoscale DiscussionSPCChildress, Collingsworth, Hall, Hardeman, Wheeler2 hr
Dec 13, 3:07 AM CSTMesoscale DiscussionSPCClay, Cooke, Grayson, Montague113 min
Dec 13, 3:58 AM CSTTornado WatchSPCArcher, Brown, Clay, Collin, Comanche, Cooke and 21 more7 hr
Dec 13, 6:00 AM CSTMesoscale DiscussionSPCCooke, Dallas, Denton, Erath, Hood, Jack and 6 more90 min
Dec 13, 2:12 PM CSTMesoscale DiscussionSPCAngelina, Cherokee, Gregg, Harrison, Houston, Marion and 6 more63 min
Dec 13, 3:51 PM CSTMesoscale DiscussionSPCAngelina, Harrison, Houston, Jasper, Madison, Nacogdoches and 9 more84 min
Dec 13, 4:44 PM CSTMesoscale DiscussionSPCSabine, San Augustine, Shelby91 min

Nearby

Mesoscale Discussions in Texas, 2022Mesoscale Discussions in Arkansas, 2022Every mesoscale discussion in 2022

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.