[MCD] SWOMCD

[MCD at goshenarc.org]

ACUS11 KWNS 211658
SWOMCD
SPC MCD 211657 
TXZ000-211730-

MESOSCALE DISCUSSION 0321
NWS STORM PREDICTION CENTER NORMAN OK
1057 AM CST MON MAR 21 2005

AREAS AFFECTED...PORTIONS OF CENTRAL TX TO THE UPPER TX COAST

CONCERNING...SEVERE THUNDERSTORM WATCH 55...

VALID 211657Z - 211730Z

WW MAY BE REQUIRED SOON FOR PORTIONS OF CENTRAL TX EWD INTO SE TX. 

VIS IMAGERY THIS MORNING HAS INDICATED MAINLY CLEAR SKIES BETWEEN
VCT AND THE HOU AREA...ALLOWING FOR SURFACE HEATING WITHIN AN AXIS
OF RICH MOISTURE.  THUNDERSTORMS...CURRENTLY OVER THE SERN PORTION
OF WW 055 /IN HAYS COUNTY/ HAVE SHOWN SOME INCREASE IN INTENSITY PER
LIGHTNING DATA SUGGESTING THEY HAVE BECOME MORE ROOTED TOWARD THE
SURFACE.  THIS TREND IS EXPECTED TO CONTINUE INTO THE AFTERNOON FROM
AROUND SAT EWD INTO SE TX...WITH ADDITIONAL DESTABILIZATION AND DEEP
LAYER SHEAR MORE THAN SUFFICIENT FOR SUPERCELLS.

..PETERS.. 03/21/2005

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

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

28639883 30149888 30329795 30519610 30779474 30629451
29599434 28829533 28509617 28669722 

WWWW