Mesoscale Discussion 0039
   NWS Storm Prediction Center Norman OK
   1220 PM CST Sat Jan 11 2020

   Areas affected...Northeast AL...Northwest GA...Southeast TN

   Concerning...Severe potential...Watch likely 

   Valid 111820Z - 111945Z

   Probability of Watch Issuance...95 percent

   SUMMARY...Threat for damaging wind and a few tornadoes will increase
   this afternoon. Watch issuance is likely by 19Z.

   DISCUSSION...An extensive QLCS has recently intensified across
   portions of western AL, with at least one confirmed tornado noted
   earlier in Pickens County. Gradually increasing downstream
   instability (noted in objective mesoanalysis and recent SWIRLL
   soundings) will favor maintenance of this system as it moves into
   northeast AL and adjacent portions of northwest GA and southern TN.
   Very strong wind profiles will also spread eastward with time, with
   1 km AGL flow of 60-70 kt and effective SRH expected to increase
   into the 450-650 m2/s2 range. This powerful wind field will continue
   to support the potential for relatively widespread damaging wind,
   and also embedded circulations capable of producing at least brief
   tornadoes. New watch issuance is expected by 19Z to cover these
   threats from northeast AL into northwest GA and southern TN.

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

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

   ATTN...WFO...MRX...FFC...OHX...BMX...HUN...

   LAT...LON   35318631 35738554 35708467 35278412 34748407 33928437
               32868481 32638544 32668580 32718623 33148651 34108662
               34558649 35318631