MESOSCALE DISCUSSION 2163
   NWS STORM PREDICTION CENTER NORMAN OK
   0936 AM CST SUN NOV 25 2007
   
   AREAS AFFECTED...S CNTRL AND SERN LA
   
   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 
   
   VALID 251536Z - 251800Z
   
   THREAT FOR ISOLATED DAMAGING WIND AND ISOLATED TORNADOES WILL EXIST
   THE REMAINDER OF THE MORNING INTO THE AFTERNOON OVER S CNTRL AND
   SERN LA...GENERALLY ALONG AND S OF AN I-10 TO I-12 CORRIDOR. TRENDS
   ARE BEING MONITORED FOR A POSSIBLE WW.
   
   LATE THIS MORNING A WARM FRONT EXTENDS ALONG THE CNTRL THROUGH NWRN
   GULF COAST AND INTO EXTREME SERN LA TO A SURFACE LOW JUST OFF THE
   COAST OF SWRN LA. A COLD FRONT EXTENDS SWD FROM THE LOW THROUGH THE
   WRN GULF. THE LOW IS FORECAST TO DEVELOP INLAND OVER LA TODAY WITHIN
   ZONE OF INCREASING UPPER DIVERGENCE AND UPWARD VERTICAL MOTION
   ASSOCIATED WITH A VORT MAX ROTATING NEWD AROUND UPPER LOW OVER TX. A
   40-45 KT LOW LEVEL JET EAST OF THE LOW CENTER WILL CONTRIBUTE TO THE
   WARM FRONT MOVING FARTHER INLAND...WITH THE MOIST WARM SECTOR
   ADVANCING TO NEAR THE I-10 TO I-12 CORRIDOR THIS AFTERNOON.
   INSTABILITY WILL REMAIN LIMITED BY WEAK LAPSE RATES AND WIDESPREAD
   CLOUDS...BUT THE NWD ADVECTION OF UPPER 60S DEWPOINTS WILL
   CONTRIBUTE TO MLCAPE AROUND 500 J/KG OVER SERN LA. STORMS WILL
   LIKELY CONTINUE DEVELOPING WITHIN THE WEAKLY CAPPED WARM SECTOR
   ALONG AND S OF THE WARM FRONT. HODOGRAPHS AND DEEP SHEAR ALONG THE
   LOW LEVEL JET AXIS WILL SUPPORT POTENTIAL FOR SUPERCELLS WITH LOW
   LEVEL MESOCYCLONES AS WELL AS BOWING STRUCTURES.
   
   ..DIAL.. 11/25/2007
   
   
   ATTN...WFO...LIX...LCH...
   
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