Alert archive / Texas / Mesoscale Discussions in 2003

Mesoscale Discussion 833

May 7, 200310 counties in Oklahoma; 65 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 7, 2003, 8:01 PM CDT for 10 counties in Oklahoma; 65 counties in Texas. It was in force for 59 min.

The area

The outline as issued.

The facts

Issued
May 7, 2003, 8:01 PM CDT (01:01 UTC)
Expired
May 7, 2003, 9:00 PM CDT
In force
59 min
Issued by
the Storm Prediction Center
All 75 counties

Beckham County, OK, Caddo County, OK, Comanche County, OK, Cotton County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Kiowa County, OK, Tillman County, OK, Washita County, OK, Archer County, TX, Armstrong County, TX, Baylor County, TX, Bosque County, TX, Briscoe County, TX, Callahan County, TX, Carson County, TX, Childress County, TX, Clay County, TX, Coleman County, TX, Collin County, TX, Collingsworth County, TX, Comanche County, TX, Cooke County, TX, Cottle County, TX, Crosby County, TX, Dallas County, TX, Denton County, TX, Dickens County, TX, Donley County, TX, Eastland County, TX, Ellis County, TX, Erath County, TX, Fannin County, TX, Fisher County, TX, Floyd County, TX, Foard County, TX, Freestone County, TX, Gray County, TX, Grayson County, TX, Hall County, TX, Hamilton County, TX, Hardeman County, TX, Haskell County, TX, Hill County, TX, Hood County, TX, Hunt County, TX, Jack County, TX, Johnson County, TX, Jones County, TX, Kaufman County, TX, Kent County, TX, King County, TX, Knox County, TX, Limestone County, TX, McLennan County, TX, Montague County, TX, Motley County, TX, Navarro County, TX, Nolan County, TX, Palo Pinto County, TX, Parker County, TX, Rockwall County, TX, Shackelford County, TX, Somervell County, TX, Stephens County, TX, Stonewall County, TX, Tarrant County, TX, Taylor County, TX, Throckmorton County, TX, Wheeler County, TX, Wichita County, TX, Wilbarger County, TX, Wise County, TX, Young 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 00:00Z, 1.0 hours before the alert went out and 191 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 2003-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2620 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 00:00Z on 2003-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 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
2620 J/kg
Mixed-layer CIN
-41 J/kg
Mixed-layer LCL
1523 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
245 m²/s²
Significant tornado parameter
0.6
Supercell composite
4.6

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 7, 10:35 PM CDTMesoscale DiscussionSPCAlfalfa, Blaine, Caddo, Canadian, Cherokee, Cleveland and 29 more55 min
May 7, 10:35 PM CDTTornado WatchSPCBeckham, Bryan, Carter, Coal, Comanche, Cotton and 13 more5 hr
May 7, 10:55 PM CDTSevere Thunderstorm WatchSPCAdair, Alfalfa, Beckham, Blaine, Caddo, Canadian and 39 more5 hr
May 7, 11:51 PM CDTMesoscale DiscussionSPCBeckham, Bryan, Carter, Coal, Comanche, Cotton and 13 more54 min
May 8, 1:18 AM CDTMesoscale DiscussionSPCAdair, Blaine, Cherokee, Craig, Custer, Delaware and 19 more3 hr
May 8, 1:55 AM CDTSevere Thunderstorm WatchSPCCraig, Delaware, Grant, Kay, Nowata, Osage and 2 more5 hr
May 8, 1:57 AM CDTMesoscale DiscussionSPCAtoka, Beckham, Bryan, Carter, Coal, Comanche and 14 more2 hr
May 8, 3:50 AM CDTSevere Thunderstorm WatchSPCAdair, Atoka, Bryan, Cherokee, Choctaw, Coal and 25 more3 hr
May 8, 3:51 AM CDTMesoscale DiscussionSPCOttawa3 hr
May 8, 5:02 AM CDTMesoscale DiscussionSPCAdair, Atoka, Cherokee, Choctaw, Coal, Creek and 24 more2 hr
May 8, 6:20 AM CDTTornado WatchSPCHaskell, Latimer, LeFlore, Sequoyah3 hr
May 8, 12:49 PM CDTMesoscale DiscussionSPCAlfalfa, Blaine, Garfield, Grant, Kingfisher, Kiowa and 1 more3 hr
May 8, 1:35 PM CDTTornado WatchSPCAlfalfa, Blaine, Caddo, Canadian, Carter, Cleveland and 24 more7 hr
May 8, 3:34 PM CDTMesoscale DiscussionSPCAlfalfa, Caddo, Canadian, Carter, Cleveland, Comanche and 25 more116 min
May 8, 4:47 PM CDTMesoscale DiscussionSPCCanadian, Cleveland, Grady, Lincoln, Logan, McClain and 3 more58 min
May 8, 5:31 PM CDTMesoscale DiscussionSPCAdair, Cherokee, Coal, Craig, Creek, Delaware and 17 more59 min
May 8, 5:45 PM CDTTornado WatchSPCAdair, Cherokee, Coal, Craig, Delaware, Haskell and 17 more5 hr
May 8, 6:38 PM CDTMesoscale DiscussionSPCAdair, Carter, Cherokee, Cleveland, Coal, Craig and 35 more2 hr
May 7, 8:15 PM CDTTornado WatchSPCBosque, Coryell, Ellis, Erath, Freestone, Hamilton and 7 more6 hr
May 8, 2:43 PM CDTMesoscale DiscussionSPCArcher, Bosque, Brown, Burnet, Callahan, Clay and 28 more62 min
May 8, 3:40 PM CDTTornado WatchSPCArcher, Brown, Callahan, Clay, Coleman, Comanche and 18 more5 hr

Nearby

Mesoscale Discussions in Texas, 2003Mesoscale Discussions in Oklahoma, 2003Every mesoscale discussion in 2003

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.