Mesoscale Discussion 1368
   NWS Storm Prediction Center Norman OK
   0523 PM CDT Fri Jul 31 2020

   Areas affected...Eastern Mississippi...North-central Alabama

   Concerning...Severe Thunderstorm Watch 407...

   Valid 312223Z - 010030Z

   The severe weather threat for Severe Thunderstorm Watch 407
   continues.

   SUMMARY...A wind damage threat may develop across parts of
   north-central Mississippi over the next couple of hours. Weather
   watch issuance will need to be considered if trends warrant.

   DISCUSSION...The latest volumetric radar imagery shows a short
   bowing line segment just to the west of Columbus, Mississippi. This
   line is located in a very moist airmass with surface dewpoints in
   its patch generally in the mid 70s F. This is contributing to
   moderate instability with the RAP analyzing a pocket of MLCAPE as
   great as 2500 to 3000 J/kg. Although deep-layer shear is relatively
   weak across north-central Alabama, low-level lapse rates are
   estimated to be near 7.5 C/Km. The steep lapse rates in the lowest 3
   Km above ground level combined with the potential for cold pool
   development means that weather watch issuance will need to be
   considered for parts of central and northern Alabama over the next
   hour.

   ..Broyles/Hart.. 07/31/2020

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

   ATTN...WFO...BMX...HUN...MEG...JAN...

   LAT...LON   33238905 32888885 32888810 33138686 33358607 33668573
               34028574 34168584 34318618 34328690 34188786 33978885
               33578906 33238905