Storm Prediction Center Mesoscale Discussion 657

   Mesoscale Discussion 0657
   NWS Storm Prediction Center Norman OK
   0607 PM CDT Wed May 06 2026

   Areas affected...southern Mississippi

   Concerning...Tornado Watch 186...

   Valid 062307Z - 070030Z

   The severe weather threat for Tornado Watch 186 continues.

   SUMMARY...Supercells showing signs of intensification and increasing
   tornado potential.

   DISCUSSION...Supercells crossing the LA/MS border and across
   southern MS have shown an uptick in intensity over the last 30
   minutes. VAD profiles from HDC (Hammond,LA) show increasing the
   850-700 mb flow beginning to be analyzed just south of the MS
   border. This increase in the low to mid-level flow will aid in
   increasing low level shear and thusly an increase in the tornado
   threat this evening.

   The cell moving into Walthall County MS has had a tornado reported
   with it over the last 30 minutes. This cell will continue into a
   favorable thermodynamic environment across southern MS, where
   moderate to strong MLCAPE overlaps strong deep layer shear around
   50-65 kts. This shows signs of cycling and strengthening. This will
   continue to pose a risk for tornadoes including potential for a
   strong tornado.

   Two other supercells across Concordia County LA and across Copiah
   County in MS are also become better organized in the low-levels.
   These are also moving within a very favorable thermodynamic
   environment and may also pose a risk for tornadoes over the next few
   hours.

   ..Thornton.. 05/06/2026

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

   ATTN...WFO...JAN...LIX...LCH...SHV...

   LAT...LON   31509204 31729168 32239065 32379041 32558996 32528956
               32388919 32208908 32018908 31838910 31488919 31208934
               30849017 30799075 31219188 31509204 

   MOST PROBABLE PEAK TORNADO INTENSITY...120-145 MPH
   MOST PROBABLE PEAK WIND GUST...55-70 MPH
   MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN