Storm Prediction Center Mesoscale Discussion 1258

   Mesoscale Discussion 1258
   NWS Storm Prediction Center Norman OK
   0320 PM CDT Mon Jun 22 2026

   Areas affected...northern AL and southern Middle TN

   Concerning...Severe Thunderstorm Watch 374...

   Valid 222020Z - 222145Z

   The severe weather threat for Severe Thunderstorm Watch 374
   continues.

   SUMMARY...Strong/damaging wind gust potential may be increasing
   across northern Alabama into southern Middle Tennessee over the next
   1-2 hours.

   DISCUSSION...A dense cluster of convection over northern AL/southern
   Middle TN has shown some signs of intensification recently. If this
   area of convection can consolidate further, damaging wind potential
   will increase in the short term. This activity is occurring within a
   favorably shear environment, characterized by 35 kt 0-6 km effective
   shear and around 200 m2/s2 0-1 km SRH. Radar velocity signatures
   have also increased both in intensity and with some middle rotation
   noted. Greater forward propagation of this cluster may be underway
   and an ensuing risk of severe wind gusts may occur soon. If this
   evolution unfolds, a downstream watch may be needed.

   ..Leitman.. 06/22/2026

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

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

   LAT...LON   35108721 35448505 35338455 34938435 34558461 34308536
               34188580 34138696 34138747 34328762 34738758 34908754
               35108721 

   MOST PROBABLE PEAK TORNADO INTENSITY...85-110 MPH
   MOST PROBABLE PEAK WIND GUST...55-70 MPH