Alert archive / Texas / Mesoscale Discussions in 2004
Mesoscale Discussion 155
The Storm Prediction Center issued this mesoscale discussion at Mar 4, 2004, 12:56 AM MST for Lea County, Roosevelt County, New Mexico; 21 counties in Oklahoma; 61 counties in Texas. It was in force for 94 min.
The area
The outline as issued.
The facts
- Issued
- Mar 4, 2004, 12:56 AM MST (07:56 UTC)
- Expired
- Mar 4, 2004, 2:30 AM MST
- In force
- 94 min
- Issued by
- the Storm Prediction Center
All 84 counties
Lea County, NM, Roosevelt County, NM, Beckham County, OK, Caddo County, OK, Canadian County, OK, Carter County, OK, Cleveland County, OK, Comanche County, OK, Cotton County, OK, Garvin County, OK, Grady County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Jefferson County, OK, Kiowa County, OK, Love County, OK, McClain County, OK, Murray County, OK, Oklahoma County, OK, Stephens County, OK, Tillman County, OK, Washita County, OK, Archer County, TX, Bailey County, TX, Baylor County, TX, Briscoe County, TX, Brown County, TX, Castro County, TX, Childress County, TX, Clay County, TX, Cochran County, TX, Coke County, TX, Coleman County, TX, Collingsworth County, TX, Concho County, TX, Crockett County, TX, Donley County, TX, Eastland County, TX, Edwards County, TX, Floyd County, TX, Foard County, TX, Hale County, TX, Hall County, TX, Hardeman County, TX, Haskell County, TX, Hockley County, TX, Irion County, TX, Jack County, TX, Jones County, TX, Kerr County, TX, Kimble County, TX, Kinney County, TX, Knox County, TX, Lamb County, TX, Loving County, TX, Lubbock County, TX, Mason County, TX, McCulloch County, TX, Menard County, TX, Montague County, TX, Motley County, TX, Nolan County, TX, Palo Pinto County, TX, Reagan County, TX, Real County, TX, Runnels County, TX, Schleicher County, TX, Shackelford County, TX, Stephens County, TX, Sterling County, TX, Sutton County, TX, Swisher County, TX, Taylor County, TX, Terrell County, TX, Throckmorton County, TX, Tom Green County, TX, Upton County, TX, Val Verde County, TX, Ward County, TX, Wichita County, TX, Wilbarger County, TX, Yoakum 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
Midland Regional, TX (KMAF), launched 00:00Z, 7.9 hours before the alert went out and 114 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 465 m above ground
- 0-6 km bulk shear
- 77 kt
- 0-1 km storm-relative helicity
- 258 m²/s²
- 0-3 km storm-relative helicity
- 343 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted, in the capitals the NWS used until 2016.
921 ACUS11 KWNS 040756 SWOMCD SPC MCD 040756 TXZ000-NMZ000-OKZ000-040930- MESOSCALE DISCUSSION 0155 NWS STORM PREDICTION CENTER NORMAN OK 0156 AM CST THU MAR 04 2004 AREAS AFFECTED...PORTIONS SW OK...SW TX -- PERMIAN BASIN...CONCHO/PECOS VALLEYS AND SOUTH PLAINS REGION CONCERNING...SEVERE TSTM POTENTIAL VALID 040756Z - 040930Z SEVERE TSTM POTENTIAL CONTINUES TO INCREASE ACROSS BROAD SWATH OF SRN HIGH PLAINS AND ADJACENT LOW PLAINS W OF ABOUT 98W LONGITUDE. WITH WW 17 EXPIRATION AT 8Z...NEW WWS REQUIRED TO COVER BOTH EXPANSIVE SEVERE HAIL THREAT N OF NWD-RETREATING SFC WARM FRONT...AND TORNADO POTENTIAL ALONG AND S OF FRONT. SFC MESOANALYSIS SHOWS WARM FRONT FROM JUST E OF BIG BEND AREA...IN NRN COAHUILA...NEWD TO NEAR SJT AND DFW METROPLEX. EXPECT THIS FRONT TO MOVE NWD ABOUT 10 KT FOR SEVERAL MORE HOURS AS PRESSURES CONTINUE TO FALL OVER REGION. AIR MASS CONTINUES TO DESTABILIZE WITH INCREASING LOW LEVEL WAA -- BOTH OVER TOP OF FRONTAL LAYER AND AT SFC TO ITS S. ELEVATED MUCAPE 800-1200 J/KG EVIDENT N OF SFC WARM FRONT WITH INCREASING MOISTURE AND ISENTROPIC ASCENT EXPECTED TO DESTABILIZE AIR MASS FARTHER ABOVE STABLE BOUNDARY LAYER. VERTICAL SHEAR PROFILES WILL SUPPORT ELEVATED SUPERCELLS WITH LARGE HAIL. ALONG AND S OF FRONT...1000-2000 J/KG SBCAPE COMBINED WITH ENLARGING LOW LEVEL HODOGRAPHS -- I.E.. 200-400 J/KG 0-3 KM SRH -- WILL SUPPORT STORM ROTATION. 60-70 KT SHEAR EXPECTED THROUGH 0-6 KM LAYER...ALONG WITH 20-25 KT S-R INFLOW. ANY SFC BASED STORMS WHICH DO DEVELOP MAY PRODUCE TORNADOES -- PARTICULARLY WHILE INTERACTING WITH SFC BAROCLINIC ZONE WHERE LIFT/SHEAR/VORTICITY ARE MAXIMIZED. ..EDWARDS.. 03/04/2004 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...SJT...LUB...MAF...FWD...EWX...OUN...AMA...ABQ... 30690359 32580359 34320009 32460009 31250247 32430009 32459977 32259933 32389868 31339889 30409915 29509957 29240079 29340094 29530121 29610121 29600132 29660131 29770144 29770159 29810183 29800210 30170235 30880257 31150270 31200269 32070363 32900405 34030362 34340286 34680196 35200005 35919807 35629730 33919693 32439866 32349937 32490008
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 4, 1:00 AM MST | Severe Thunderstorm Watch | SPC | Lea, Roosevelt | 5 hr |
| Mar 4, 4:01 AM MST | Mesoscale Discussion | SPC | Lea, Roosevelt | 119 min |
| Mar 4, 1:44 AM MST | Mesoscale Discussion | SPC | Alfalfa, Beckham, Blaine, Caddo, Canadian, Carter and 36 more | 3 hr |
| Mar 4, 5:55 AM MST | Severe Thunderstorm Watch | SPC | Beckham, Custer, Dewey, Ellis, Greer, Harmon and 6 more | 6 hr |
| Mar 4, 6:20 AM MST | Severe Thunderstorm Watch | SPC | Alfalfa, Blaine, Caddo, Canadian, Cleveland, Comanche and 23 more | 6 hr |
| Mar 4, 6:55 AM MST | Mesoscale Discussion | SPC | Alfalfa, Beckham, Blaine, Canadian, Custer, Dewey and 17 more | 3 hr |
| Mar 4, 8:28 AM MST | Mesoscale Discussion | SPC | Adair, Atoka, Bryan, Carter, Cherokee, Choctaw and 33 more | 62 min |
| Mar 4, 8:45 AM MST | Tornado Watch | SPC | Caddo, Canadian, Cleveland, Comanche, Cotton, Garvin and 8 more | 5 hr |
| Mar 4, 10:52 AM MST | Mesoscale Discussion | SPC | Carter, Cleveland, Comanche, Cotton, Garvin, Grady and 7 more | 53 min |
| Mar 4, 12:02 PM MST | Mesoscale Discussion | SPC | Caddo, Canadian, Cleveland, Comanche, Cotton, Garvin and 6 more | 88 min |
| Mar 4, 12:25 PM MST | Mesoscale Discussion | SPC | Adair, Atoka, Bryan, Cherokee, Choctaw, Coal and 29 more | 65 min |
| Mar 4, 1:02 PM MST | Mesoscale Discussion | SPC | Canadian, Carter, Cleveland, Comanche, Creek, Garvin and 12 more | 88 min |
| Mar 4, 1:05 PM MST | Tornado Watch | SPC | Adair, Atoka, Bryan, Carter, Cherokee, Coal and 33 more | 6 hr |
| Mar 4, 1:18 PM MST | Mesoscale Discussion | SPC | Choctaw, McCurtain | 57 min |
| Mar 4, 2:00 PM MST | Tornado Watch | SPC | Choctaw, McCurtain | 6 hr |
| Mar 4, 3:41 PM MST | Mesoscale Discussion | SPC | McCurtain | 2 hr |
| Mar 3, 6:03 PM MST | Mesoscale Discussion | SPC | Andrews, Borden, Coke, Crane, Crockett, Dawson and 25 more | 117 min |
| Mar 3, 7:40 PM MST | Severe Thunderstorm Watch | SPC | Andrews, Borden, Cottle, Crane, Crosby, Dawson and 20 more | 5 hr |
| Mar 3, 10:44 PM MST | Mesoscale Discussion | SPC | Andrews, Borden, Crane, Crosby, Dawson, Dickens and 16 more | 2 hr |
| Mar 4, 3:25 AM MST | Tornado Watch | SPC | Callahan, Coke, Coleman, Concho, Crockett, Fisher and 23 more | 6 hr |
| Mar 4, 4:32 AM MST | Mesoscale Discussion | SPC | Callahan, Coke, Coleman, Concho, Crockett, Fisher and 23 more | 118 min |
| Mar 4, 7:43 AM MST | Mesoscale Discussion | SPC | Archer, Baylor, Callahan, Coke, Coleman, Concho and 26 more | 62 min |
| Mar 4, 9:46 AM MST | Mesoscale Discussion | SPC | Atascosa, Bandera, Bell, Bexar, Blanco, Bosque and 27 more | 89 min |
| Mar 4, 10:50 AM MST | Tornado Watch | SPC | Bandera, Bell, Blanco, Bosque, Brown, Burnet and 42 more | 5 hr |
| Mar 4, 10:52 AM MST | Mesoscale Discussion | SPC | Austin, Brazoria, Brazos, Burleson, Chambers, Colorado and 15 more | 113 min |
| Mar 4, 12:42 PM MST | Mesoscale Discussion | SPC | Bell, Blanco, Bosque, Burnet, Collin, Coryell and 17 more | 63 min |
Nearby
Mesoscale Discussions in Texas, 2004Mesoscale Discussions in Oklahoma, 2004Mesoscale Discussions in New Mexico, 2004Every mesoscale discussion in 2004
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.