Mesoscale Discussion 0033
   NWS Storm Prediction Center Norman OK
   0820 AM CST Sat Jan 11 2020

   Areas affected...Southern IN...Far southwest OH...Central
   KY...Middle/Eastern TN

   Concerning...Severe potential...Watch likely 

   Valid 111420Z - 111515Z

   Probability of Watch Issuance...80 percent

   SUMMARY...Long-lived squall line may continue to produce damaging
   wind and perhaps a brief tornado as it moves eastward, though
   convective intensity may wane with time. Local watch extension
   and/or new watch issuance is likely.

   DISCUSSION...A long-lived squall line is moving through portions of
   central KY/middle TN at 1415Z. Downstream instability is negligible,
   though MUCAPE of 100-300 J/kg may continue spread downstream in
   conjunction with the line, allowing for maintenance of the squall
   line as it moves eastward. Very strong flow fields (70-80 kt at
   around 1 km AGL per area soundings and VWPs) will continue to
   support the potential for locally damaging wind and perhaps a brief
   tornado, despite the presence of slightly stable surface conditions.
   Downstream watch issuance is likely soon to cover this threat.

   ..Dean/Hart.. 01/11/2020

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

   ATTN...WFO...MRX...JKL...ILN...LMK...OHX...IND...HUN...

   LAT...LON   38778661 39328526 39578435 38028420 36488437 35768482
               35538524 35338605 36118608 37178626 38438668 38778661