[MCD] SWOMCD

[MCD at goshenarc.org]

ACUS11 KWNS 291843
SWOMCD
SPC MCD 291842 
TXZ000-292015-

MESOSCALE DISCUSSION 1055
NWS STORM PREDICTION CENTER NORMAN OK
0142 PM CDT SUN MAY 29 2005

AREAS AFFECTED...COASTAL PLAINS OF SERN TX

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 291842Z - 292015Z

...A TORNADO WATCH WILL BE ISSUED SHORTLY...

RETREATING OUTFLOW BOUNDARY FROM EARLY MORNING THUNDERSTORM CLUSTER
HAS MOVED INLAND AND IS WASHING OUT...BUT STILL DISCERNABLE FROM THE
MIDDLE TX COAST...ARCING TO THE NORTH OF VCT.  LATEST OBSERVATIONAL
DATA INDICATES MARITIME TROPICAL AIRMASS IS SPREADING NWD WITH MID
70S SFC DEW POINTS SEVERAL COUNTIES INLAND...YIELDING MLCAPE VALUES 
APPROACHING 3000 J/KG. IT APPEARS CONVECTION IS BEGINNING TO
DEVELOP ALONG THIS RETREATING BOUNDARY OVER VICTORIA AND JACKSON
COUNTIES.  ISOLATED SUPERCELLS MAY EVOLVE FROM THIS ACTIVITY OVER
THE NEXT HOURS OR SO.  ADDITIONAL DEVELOPMENT IS LIKELY LATER THIS
AFTERNOON AS BOUNDARY LAYER CONTINUES TO HEAT UPSTREAM ACROSS SRN
TX.  ADDITIONALLY...UPPER VORT REMAINS EVIDENT IN WV
IMAGERY...SHEARING EWD TOWARD LRD.  THIS FEATURE SHOULD ENHANCE
LARGE SCALE ASCENT ACROSS MUCH OF SRN/SERN TX. VERY LARGE HAIL MAY
OCCUR WITH THIS ACTIVITY...ALONG WITH THE POSSIBILITY FOR ISOLATED
TORNADOES.

..DARROW.. 05/29/2005

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...HGX...CRP...EWX...

29299867 30229487 29099496 27699771 

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