Alert archive / Texas / Mesoscale Discussions in 2003
Mesoscale Discussion 2148
The Storm Prediction Center issued this mesoscale discussion at Aug 11, 2003, 6:09 PM CDT for 48 counties in Texas. It was in force for 96 min.
The area
The outline as issued.
The facts
- Issued
- Aug 11, 2003, 6:09 PM CDT (23:09 UTC)
- Expired
- Aug 11, 2003, 7:45 PM CDT
- In force
- 96 min
- Issued by
- the Storm Prediction Center
All 48 counties
Aransas County, TX, Atascosa County, TX, Bandera County, TX, Bastrop County, TX, Bee County, TX, Bexar County, TX, Blanco County, TX, Brooks County, TX, Caldwell County, TX, Cameron County, TX, Comal County, TX, DeWitt County, TX, Dimmit County, TX, Duval County, TX, Fayette County, TX, Frio County, TX, Goliad County, TX, Gonzales County, TX, Guadalupe County, TX, Hays County, TX, Hidalgo County, TX, Jim Hogg County, TX, Jim Wells County, TX, Karnes County, TX, Kendall County, TX, Kenedy County, TX, Kerr County, TX, Kinney County, TX, Kleberg County, TX, La Salle County, TX, Lavaca County, TX, Live Oak County, TX, Maverick County, TX, McMullen County, TX, Medina County, TX, Nueces County, TX, Real County, TX, Refugio County, TX, San Patricio County, TX, Starr County, TX, Travis County, TX, Uvalde County, TX, Victoria County, TX, Webb County, TX, Willacy County, TX, Wilson County, TX, Zapata County, TX, Zavala County, TX
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 12:00Z, 11.2 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
- 1123 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 798 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
970 ACUS11 KWNS 112309 SWOMCD SPC MCD 112309 TXZ000-120045- MESOSCALE DISCUSSION 2148 NWS STORM PREDICTION CENTER NORMAN OK 0609 PM CDT MON AUG 11 2003 AREAS AFFECTED...SOUTH TEXAS CONCERNING...SEVERE THUNDERSTORM WATCH 857... VALID 112309Z - 120045Z SEVERAL SMALL CLUSTERS OF STRONG/SEVERE THUNDERSTORMS CONTINUE TO MOVE SSW AT ABOUT 20 KTS IN PART OF S TX COVERED BY WW 857. DAMAGING WIND GUSTS HAVE ACCOMPANIED THE FAIRLY STRONG/COLD OUTFLOW FROM SOME OF THE STORMS. AIR MASS S OF MAIN COMPOSITE OUTFLOW BOUNDARY...WHICH RUNS ROUGHLY W/E ACROSS SRN PART OF WW...SHOULD REMAIN CONDUCIVE TO LOCALIZED STRONG DOWNDRAFT DEVELOPMENT DURING THE NEXT COUPLE OF HOURS. AND...A FEW NEW STORMS WILL PROBABLY INITIATE THROUGH SUNSET ALONG SLOW-MOVING SEA BREEZE FRONT THAT ATTM EXTENDS S FROM WW INTO HIDALGO COUNTY. AN ISOLATED STRONG STORM OR TWO MAY ALSO DEVELOP IN DEEP-MIXED ENVIRONMENT EXTENDING SW FROM WRN PART OF WW TO THE RIO GRANDE. THE OVERALL POTENTIAL FOR ADDITIONAL SEVERE ACTIVITY APPEARS LIMITED ENOUGH...HOWEVER...TO NOT WARRANT A REPLACEMENT WW. ..CORFIDI.. 08/11/2003 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...HGX...CRP...EWX...BRO... 25989716 26139830 26829928 28690035 29270063 30040023 30319865 30249661 28469666 27529740
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 11:31 AM CDT | Mesoscale Discussion | SPC | Austin, Bastrop, Brazoria, Brazos, Burleson, Caldwell and 27 more | 89 min |
| Aug 11, 12:05 PM CDT | Severe Thunderstorm Watch | SPC | Austin, Brazoria, Colorado, Fort Bend, Galveston, Harris and 8 more | 6 hr |
| Aug 11, 2:06 PM CDT | Mesoscale Discussion | SPC | Bowie, Camp, Cass, Collin, Cooke, Dallas and 31 more | 54 min |
| Aug 11, 2:31 PM CDT | Mesoscale Discussion | SPC | Atascosa, Austin, Bandera, Bastrop, Bee, Bexar and 44 more | 29 min |
| Aug 11, 2:35 PM CDT | Severe Thunderstorm Watch | SPC | Atascosa, Bandera, Bastrop, Bee, Bexar, Blanco and 21 more | 5 hr |
| Aug 11, 4:45 PM CDT | Severe Thunderstorm Watch | SPC | Bosque, Clay, Collin, Comanche, Cooke, Dallas and 17 more | 5 hr |
| Aug 11, 5:16 PM CDT | Mesoscale Discussion | SPC | Anderson, Angelina, Austin, Brazoria, Brazos, Chambers and 21 more | 59 min |
| Aug 11, 5:29 PM CDT | Mesoscale Discussion | SPC | Collin, Dallas, Ellis, Grayson, Navarro, Rockwall | 2 hr |
Nearby
Mesoscale Discussions in Texas, 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.