Mesoscale Discussion 0087
   NWS Storm Prediction Center Norman OK
   0433 AM CST Thu Feb 06 2020

   Areas affected...Parts of southeastern Mississippi and southwestern
   through central Alabama

   Concerning...Tornado Watch 25...

   Valid 061033Z - 061200Z

   The severe weather threat for Tornado Watch 25 continues.

   SUMMARY...Remaining valid portion of Tornado Watch 25 probably needs
   to be locally extended in time another couple of hours.

   DISCUSSION...A short wave impulse, which has emerged from the base
   of large-scale mid/upper troughing, is now accelerating northeast of
   the Ark-La-Tex region.  Forcing for ascent related to this feature
   has aided increasing thunderstorm development along and in the wake
   of the cold front, which is still west of Birmingham, Mobile and
   Biloxi, but is beginning to surge east of New Orleans.  Increasing
   2-hourly surface pressure rises are now evident in the wake of the
   cold front across southwestern Mississippi into southeastern
   Louisiana, and it does appear that an eastward acceleration of the
   front is underway.  However, it may not advance through the
   remaining valid portions of Tornado Watch 25 until the 12-14Z time
   frame.  Until it does, the environment remains conditionally
   supportive of severe thunderstorm development ahead of the cold
   front, with the latest Rapid Refresh suggesting further
   strengthening of southerly 850 mb flow still possible contributing
   to strong to extreme low-level shear.

   ..Kerr.. 02/06/2020

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

   ATTN...WFO...BMX...MOB...

   LAT...LON   33028709 33068639 32588666 30838777 30858887 33028709