Mesoscale Discussion 0463
   NWS Storm Prediction Center Norman OK
   0509 PM CDT Thu Apr 23 2020

   Areas affected...Central FL Panhandle into Northern FL/Southern GA

   Concerning...Tornado Watch 141...

   Valid 232209Z - 232345Z

   The severe weather threat for Tornado Watch 141 continues.

   SUMMARY...Well-developed convective line will continue to pose a
   risk for strong wind gusts and QLCS tornadoes as it progresses
   eastward over the next few hours. Another downstream watch will be
   needed within the hour.

   DISCUSSION...Regional radar imagery shows a well-developed
   convective line moving across the central FL Panhandle. Recent storm
   motion was  estimated at 40 kt, which will take the line to the edge
   of Tornado Watch 141 between 00-01Z. Some increase in
   forward-propagation is possible soon as the line interacts with
   additional storms immediately ahead of it. Additionally, an outflow
   boundary from earlier convection currently sits from TLH eastward to
   about 20-25 miles south of JAX. Temperatures south of this boundary
   in the 80s over the eastern Panhandle, increasing into the upper
   80s/low 90s farther east across northern FL, while remaining in the
   60s to its north. This temperature gradient could act to enhanced
   updrafts within the convective line, which could also promote the
   development of a more well-defined meso-low. 

   Kinematic fields remain favorable for strong wind gusts and QLCS
   tornadoes. Recent KTLH VAD sampled 50 kt at 1 km and over 400 m2/s2
   of 0-1 km SRH. This strong low to mid-level flow is expected to
   persist over the FL Panhandle and into northern FL over the next
   several hours. Overall expectation is for severe threat to continue
   eastward into northern FL as the line progresses eastward. An
   additional watch will be needed downstream within the next hour.

   ..Mosier/Grams.. 04/23/2020

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

   ATTN...WFO...TBW...JAX...TAE...

   LAT...LON   30798515 31088459 31158390 30988295 30518161 29798130
               29348236 29408425 29638561 30798515