Mesoscale Discussion 2209
   NWS Storm Prediction Center Norman OK
   0131 PM CST Mon Dec 16 2019

   Areas affected...Portions of western and central Louisiana

   Concerning...Tornado Watch 700...

   Valid 161931Z - 162130Z

   The severe weather threat for Tornado Watch 700 continues.

   SUMMARY...Increasing convective development along the cold front
   entering western Louisiana has been noted in WW 700. These storms
   will be capable of all severe hazards, though tornado potential will
   be more limited than eastern portions of the Watch due to a linear
   storm mode.

   DISCUSSION...Early development within WW 700 has generally been
   discrete supercells. Several tornadoes have been reported from
   central portions of Louisiana into west-central Mississippi. These
   discrete storms are expected to continue moving northeast with a
   continued threat for all severe hazards (see MCD 2208 for further
   details). Farther west along the cold front, convection has begun to
   increase. The downstream environment continues to warm/moisten ahead
   of the cold front, supporting 1500-2000 J/kg MLCAPE. Severe wind
   gusts and large hail will likely be the primary hazards with this
   activity. The expected linear storm mode should keep the potential
   for tornadoes less than areas to the east. However, strong effective
   shear (50-65 kts) and low-level hodograph curvature (around 300
   m2/s2 effective SRH) will mean QLCS tornadoes will remain possible.

   ..Wendt.. 12/16/2019

   ...Please see www.spc.noaa.gov for graphic product...

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

   LAT...LON   30199465 31879388 32939258 33269182 32869167 31729241
               30829300 29799325 29679345 29659383 29649446 29949480
               30199465