Alert archive / Texas / Mesoscale Discussions in 2015

Mesoscale Discussion 2071

December 26, 2015Crawford County, Sebastian County, Arkansas; 11 counties in Oklahoma; 31 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Dec 26, 2015, 7:32 PM CST for Crawford County, Sebastian County, Arkansas; 11 counties in Oklahoma; 31 counties in Texas. It was in force for 88 min.

The area

The outline as issued.

The facts

Issued
Dec 26, 2015, 7:32 PM CST (01:32 UTC)
Expired
Dec 26, 2015, 9:00 PM CST
In force
88 min
Issued by
the Storm Prediction Center
All 44 counties

Crawford County, AR, Sebastian County, AR, Atoka County, OK, Bryan County, OK, Choctaw County, OK, Coal County, OK, Haskell County, OK, Latimer County, OK, LeFlore County, OK, McCurtain County, OK, Pittsburg County, OK, Pushmataha County, OK, Sequoyah County, OK, Bosque County, TX, Collin 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, Hamilton 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, Limestone County, TX, McLennan County, TX, Navarro County, TX, Rains County, TX, Red River County, TX, Rockwall County, TX, Somervell County, TX, Tarrant County, TX, Van Zandt County, TX, Wood County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 108 km from the middle of the area, began a volume at 01:32 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 00:00Z, 1.5 hours before the alert went out and 91 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 00:00Z on 2015-12-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1659 joules per kilogram.LCLEL10008507005003002001001 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 00:00Z on 2015-12-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 233 square meters per square second.1939587897Sfc1 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
1659 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
775 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
233 m²/s²
0-3 km storm-relative helicity
229 m²/s²
Significant tornado parameter
2.6
Supercell composite
13.7

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
Dec 26, 11:27 PM CSTMesoscale DiscussionSPCBoone, Crawford, Franklin, Johnson, Logan, Madison and 8 more2 hr
Dec 27, 5:44 AM CSTMesoscale DiscussionSPCLittle River, Sevier3 hr
Dec 27, 8:56 AM CSTTornado WatchSPCHempstead, Howard, Lafayette, Little River, Miller, Sevier10 hr
Dec 27, 12:45 PM CSTMesoscale DiscussionSPCHempstead, Howard, Lafayette, Little River, Miller, Sevier2 hr
Dec 27, 12:47 PM CSTMesoscale DiscussionSPCAshley, Bradley, Calhoun, Cleveland, Columbia, Drew and 2 more88 min
Dec 27, 2:27 PM CSTMesoscale DiscussionSPCAshley, Bradley, Calhoun, Cleveland, Columbia, Dallas and 7 more63 min
Dec 27, 2:47 PM CSTTornado WatchSPCArkansas, Ashley, Bradley, Calhoun, Clark, Cleveland and 15 more7 hr
Dec 27, 4:55 PM CSTMesoscale DiscussionSPCAshley, Bradley, Calhoun, Cleveland, Columbia, Dallas and 8 more2 hr
Dec 27, 3:38 AM CSTMesoscale DiscussionSPCAlfalfa, Beckham, Blaine, Caddo, Canadian, Custer and 11 more6 hr
Dec 27, 4:36 AM CSTMesoscale DiscussionSPCBeaver, Ellis, Texas6 hr
Dec 27, 9:50 AM CSTMesoscale DiscussionSPCAlfalfa, Beckham, Blaine, Caddo, Canadian, Comanche and 16 more6 hr
Dec 27, 12:04 PM CSTMesoscale DiscussionSPCJefferson, Love, Marshall2 hr
Dec 27, 3:55 PM CSTMesoscale DiscussionSPCBeckham, Caddo, Canadian, Cleveland, Comanche, Cotton and 10 more4 hr
Dec 26, 8:09 PM CSTMesoscale DiscussionSPCBorden, Callahan, Coke, Coleman, Concho, Crockett and 21 more2 hr
Dec 26, 8:58 PM CSTSevere Thunderstorm WatchSPCBandera, Crockett, Edwards, Gillespie, Kerr, Kimble and 11 more7 hr
Dec 26, 11:21 PM CSTMesoscale DiscussionSPCArmstrong, Bailey, Briscoe, Carson, Castro, Cochran and 17 more5 hr
Dec 26, 11:48 PM CSTMesoscale DiscussionSPCConcho, Edwards, Gillespie, Kerr, Kimble, Kinney and 11 more87 min
Dec 27, 5:15 AM CSTMesoscale DiscussionSPCAndrews, Cochran, Crane, Culberson, Ector, Gaines and 10 more5 hr
Dec 27, 11:24 AM CSTMesoscale DiscussionSPCAndrews, Bailey, Borden, Castro, Cochran, Crane and 24 more6 hr
Dec 27, 3:19 PM CSTMesoscale DiscussionSPCBrazoria, Chambers, Fort Bend, Galveston, Harris, Houston and 7 more116 min

Nearby

Mesoscale Discussions in Texas, 2015Mesoscale Discussions in Oklahoma, 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.