MESOSCALE DISCUSSION 2324
   NWS STORM PREDICTION CENTER NORMAN OK
   0752 PM CST FRI DEC 29 2006
   
   AREAS AFFECTED...PARTS OF SRN AND CENTRAL LA
   
   CONCERNING...SEVERE POTENTIAL...WATCH LIKELY 
   
   VALID 300152Z - 300245Z
   
   NEW TORNADO WATCH BEING CONSIDERED FOR PARTS OF LA.
   
   00Z SOUNDING AT LCH INDICATED A SHALLOW STABLE BOUNDARY LAYER WITH
   PARCELS ROOTED NEAR THE SURFACE...OR POTENTIALLY AT THE SURFACE...
   BEING CAPABLE OF REALIZING MODERATE INSTABILITY.  DEEP LAYER SHEAR
   IS ALREADY SUPPORTIVE OF SUPERCELLS WITH EFFECTIVE SRH VALUES IN
   EXCESS OF 400 M2/S2 FAVORING A TORNADIC POTENTIAL WITH ANY STORMS
   THAT CAN BECOME SURFACE-BASED.  TSTM ACTIVITY OVER CENTRAL/E TX WILL
   CONTINUE TO DEVELOP/MOVE INTO LA THIS EVENING AS FORCING FOR ASCENT
   SPREADS INTO THIS REGION.  ALTHOUGH WARM SECTOR SHOULD CONTINUE TO
   DECREASE IN SIZE...DESTABILIZATION WILL BE SUFFICIENT...GIVEN STRONG
   KINEMATICS FOR THE SEVERE THREAT AND ATTENDANT TORNADO POTENTIAL TO
   SPREAD INTO LA.
   
   ..PETERS.. 12/30/2006
   
   
   ATTN...WFO...JAN...LIX...LCH...SHV...
   
   31269192 29359150 28959183 29299329 29849379 31339368
   32099402 32609403 32289192