Mesoscale Discussion 0346
   NWS Storm Prediction Center Norman OK
   0359 PM CDT Fri Apr 09 2021

   Areas affected...Parts of central Texas

   Concerning...Severe potential...Watch possible 

   Valid 092059Z - 092300Z

   Probability of Watch Issuance...40 percent

   SUMMARY...Isolated to widely scattered intense thunderstorms
   increasingly possible through 5-6 PM, accompanied by the risk for
   large, potentially damaging, hail and locally strong surface gusts. 
   A severe weather watch may be needed within the next hour or so.

   DISCUSSION...The deepening moist boundary layer has become strongly
   unstable along/east of the dryline which is still just west of the
   Interstate 35 corridor, across north central through central Texas. 
   As mid-level troughing begins to overspread this region, it appears
   that cooling aloft is contributing to weakening of initially strong
   mid-level inhibition.  Initial attempts at thunderstorm development
   may be underway to the west of the dryline, based on recent
   satellite imagery, and isolated to widely scattered thunderstorm
   development appears possible through 22-23Z.  

   Strongest deep-layer shear, beneath the high-level jet of
   lower-latitude Pacific origin, is generally south of the Dallas-Fort
   Worth Metroplex, between Waco and San Antonio, where potential for
   supercells currently seems highest. This probably will be
   accompanied by a risk for large, potentially damaging hail, and
   locally strong surface gusts into early evening.

   ..Kerr/Thompson.. 04/09/2021

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

   ATTN...WFO...HGX...FWD...EWX...

   LAT...LON   32539781 32609689 30859676 29859735 29379815 29539867
               29889878 30729831 32539781