[MCD] SWOMCD

[MCD at goshenarc.org]

ACUS11 KWNS 271356
SWOMCD
SPC MCD 271355 
LAZ000-TXZ000-271600-

MESOSCALE DISCUSSION 1430
NWS STORM PREDICTION CENTER NORMAN OK
0855 AM CDT SUN JUN 27 2004

AREAS AFFECTED...SERN TX...LA

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 271355Z - 271600Z

...DAMAGING WIND POTENTIAL APPEARS TO BE INCREASING AHEAD OF SQUALL
LINE APPROACHING THE SABINE RIVER OF EAST TX/WRN LA...WW MAY BE
REQUIRED...

AN INCREASING CLUSTER OF THUNDERSTORMS HAVE GRADUALLY EXPANDED OVER
THE LAST FEW HOURS AND APPEAR TO BE EVOLVING TOWARD A MATURE MCS
OVER SERN TX.  A WELL DEFINED SQUALL LINE HAS DEVELOPED ALONG
LEADING EDGE OF CONVECTION ARCING FROM ANGELINA COUNTY TX...INTO SAN
JACINTO TX...MOVING ENEWD AT ROUGHLY 35KT.  12Z SOUNDING FROM LCH
INDICATES A FAIRLY SHARP INSTABILITY GRADIENT ACROSS SRN PORTIONS OF
LA WITH STRONG INSTABILITY...SBCAPES IN EXCESS OF 3000J/KG...ONSHORE
 ROUGHLY 50-100MI.  GIVEN THE SUSTAINED WARM ADVECTION PROFILES
OBSERVED...THIS EVOLVING MCS SHOULD CONTINUE ITS EWD MOVEMENT INTO
LA WITH A POSSIBLE UPWARD TREND AS BOUNDARY LAYER WARMS.  WILL
CONTINUE TO MONITOR FOR DAMAGING WIND POTENTIAL AND POSSIBLE WW.

..DARROW.. 06/27/2004

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

ATTN...WFO...JAN...LCH...SHV...HGX...FWD...

31709525 32349279 31799162 30549206 30169535 30879592 

WWWW