Mesoscale Discussion 0363
   NWS Storm Prediction Center Norman OK
   0514 PM CDT Sun Apr 12 2020

   Areas affected...northern Alabama

   Concerning...Tornado Watch 109...

   Valid 122214Z - 122345Z

   The severe weather threat for Tornado Watch 109 continues.

   SUMMARY...Potential for strong/damaging winds remains evident across
   northern Alabama, along with risk for tornadoes.  Potential will
   continue as storms shift quickly east-northeastward.

   DISCUSSION...Latest radar loop shows widespread thunderstorms
   crossing the northern third of Alabama -- within Tornado Watch 109. 
   The strongest storms are within a bowing cluster exhibiting a
   persistent mesolow/comma-head circulation, which is now crossing
   Walker County.  Along with risk for damaging winds, tornadoes remain
   possible with this cluster of fast-moving storms, as several
   smaller-scale circulations remain evident within the cluster.  The
   strongest of these circulations -- now over southern Walker County
   -- is currently associated with a TDS/CC min suggestive of a tornado
   in progress.

   The severe/tornado potential is being supported by intense/veering
   flow through the lower and mid troposphere, with this wind field
   widespread across the Mid South/Tennessee Valley area.  However,
   instability diminishes with northward extent across Tennessee.  As
   such, storms over northern portions of the watch in the vicinity of
   the Tennessee/Alabama border counties remain weaker at this time. 
   While some risk remains across this part of the area, expect
   greatest severe/tornado risk to remain over southern portions of the
   WW over the next hour or so.

   ..Goss.. 04/12/2020

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

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

   LAT...LON   33208797 33798803 35068709 35028565 33688527 33238684
               33208797