Storm Prediction Center Mesoscale Discussion 258

   Mesoscale Discussion 0258
   NWS Storm Prediction Center Norman OK
   1054 PM CDT Sun Mar 15 2026

   Areas affected...Middle Tennessee and northern Alabama

   Concerning...Tornado Watch 59...

   Valid 160354Z - 160600Z

   The severe weather threat for Tornado Watch 59 continues.

   SUMMARY...Severe threat continues within WW59.

   DISCUSSION...A squall line continues eastward across Middle
   Tennessee, with history of damaging winds and hail. A cluster ahead
   of the main line of thunderstorms has exhibited occasional strong
   rotation and will likely merge with the main line over the next
   hour. Though moisture remains more marginal, with dew points in the
   low to mid 50s F and MLCAPE around 250-500 J/kg. Strongly sheared
   profiles (as observed from the VAD at KBNA) continue to support a
   strong line of thunderstorms with embedded mesovorticies and
   potential for damaging wind and tornadoes over the next several
   hours.

   ..Thornton.. 03/16/2026

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

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

   LAT...LON   34818805 35928712 36428680 36648662 36678612 36648595
               36508489 36228480 35778480 35328497 34868517 34408584
               34258621 34298716 34298779 34358786 34378796 34818805 

   MOST PROBABLE PEAK TORNADO INTENSITY...100-130 MPH
   MOST PROBABLE PEAK WIND GUST...75-90 MPH
   MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN