MESOSCALE DISCUSSION 2214
   NWS STORM PREDICTION CENTER NORMAN OK
   0941 PM CDT WED SEP 28 2011
   
   AREAS AFFECTED...SE TX...SW AND CNTRL LA
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 858...
   
   VALID 290241Z - 290415Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 858
   CONTINUES.
   
   A SEVERE THREAT WILL LIKELY CONTINUE ACROSS WW 858 FOR A FEW MORE
   HOURS. HAIL AND ISOLATED WIND DAMAGE WILL BE POSSIBLE WITH THE
   STRONGER CELLS. THE THREAT IS EXPECTED TO BECOME INCREASINGLY
   MARGINAL LATE THIS EVENING AND AN ADDITIONAL WW IS NOT ANTICIPATED.
   
   A LINE OF STRONG THUNDERSTORMS IS ONGOING ON THE WRN EDGE OF STRONG
   INSTABILITY JUST TO THE SOUTH OF A FRONTAL BOUNDARY EXTENDING WEST
   TO EAST ACROSS CNTRL LA. OVER THE LAST FEW HOURS...LARGE-SCALE
   ASCENT HAS MARKEDLY INCREASED IN CNTRL LA AHEAD OF A PRONOUNCED
   VORTICITY MAX OVER THE ARKLATEX. DEEP LAYER SHEAR HAS ALSO INCREASED
   SOME ACROSS CNTRL LA DUE TO AN APPROACHING 35 TO 45 KT MID-LEVEL JET
   MAX. THIS ALONG WITH MLCAPE VALUES OF 2000 TO 3000 J/KG WILL
   CONTINUE TO SUPPORT AN ISOLATED SEVERE THREAT WITH THE STRONGER
   CELLS IN THE LINE. ALTHOUGH HAIL AND WIND DAMAGE WILL BE POSSIBLE
   ACROSS WW 858 FOR A FEW MORE HOURS...MESOANALYSIS SUGGESTS THE
   CAPPING INVERSION IS STRENGTHENING. IN RESPONSE...THE STORMS SHOULD
   BECOME INCREASINGLY ELEVATED WITH TIME MAKING THE SEVERE THREAT MORE
   MARGINAL LATE THIS EVENING WITH HEAVY RAINFALL BECOMING THE GREATEST
   THREAT.
   
   ..BROYLES.. 09/29/2011
   
   
   ATTN...WFO...MOB...JAN...LIX...LCH...SHV...
   
   LAT...LON   30728838 31408989 31569112 31469224 31119326 30629437
               30159436 29949371 29889306 29809178 29599054 29388956
               29268881 30728838