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Mesoscale Discussion 218
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MD 218 graphic

   Mesoscale Discussion 0218
   NWS Storm Prediction Center Norman OK
   0152 AM CDT Thu Mar 18 2021

   Areas affected...Portions of the FL Panhandle...southeastern
   AL...and western GA

   Concerning...Tornado Watch 36...38...

   Valid 180652Z - 180815Z

   The severe weather threat for Tornado Watch 36, 38 continues.

   SUMMARY...An isolated severe threat continues early this morning,
   including the potential for a tornado.

   DISCUSSION...Convection has weakened across western GA over the past
   couple of hours, as it has generally outpaced the low-level moisture
   return and moved into an increasingly more stable environment.
   Farther south, strong storms are ongoing across parts of the FL
   Panhandle into southeastern AL. A wind gust of 48 kt (55 mph) was
   recently reported at KPRN in south-central AL. VWPs from KEOX and
   KEVX ahead of the broken line show decent veering/strengthening of
   the wind profile with height through mid levels. With 250+ m2/s2 of
   effective SRH present across the warm sector, a tornado remains a
   possibility with any storm that can remain surface based.
   Strong/gusty outflow winds may also occur with the more linear
   convection in the western FL Panhandle and south-central AL. The
   overall severe threat will probably remain fairly isolated through
   the early morning hours, as the best large-scale forcing for ascent
   associated with an upper trough/low over the lower/mid MS Valley
   remains displaced to the north of the central Gulf Coast.

   ..Gleason.. 03/18/2021

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

   ATTN...WFO...FFC...TAE...BMX...MOB...

   LAT...LON   30268766 30868723 31968593 32478495 32418441 32088434
               31678475 30858580 30388654 30268766 

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