Mesoscale Discussion 1995
   NWS Storm Prediction Center Norman OK
   0848 PM CST Fri Dec 10 2021

   Areas affected...Far northwest Tennessee and western Kentucky.

   Concerning...Tornado Watch 552...

   Valid 110248Z - 110345Z

   The severe weather threat for Tornado Watch 552 continues.

   SUMMARY...The intense tornado threat continues from the long-track
   supercell currently in far northwest Tennessee.

   DISCUSSION...The long-track supercell in northwest Tennessee has
   shown 70+ knot Vrot nearly continuously for the past 90 minutes with
   a nearly continuous and deep TDS for over 80 miles. More storms have
   developed in the vicinity of this storm over the past 30 minutes
   which could disrupt its internal structure and bring an end to the
   steady state structure. However, the downstream environment is still
   very favorable with upper 60 dewpoints and backed surface winds and
   STP around 5 to 6. Therefore, even if the low-level circulation is
   disrupted, additional organization/cycling is likely and the intense
   tornado threat is expected to continue as this supercell continues
   northeast.

   ..Bentley.. 12/11/2021

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

   ATTN...WFO...PAH...MEG...

   LAT...LON   36668822 36388910 36368932 36428945 36508942 36848905
               37048854 37158805 37058778 36898770 36668822