Mesoscale Discussion 0550
   NWS Storm Prediction Center Norman OK
   0730 PM CDT Sat Apr 27 2024

   Areas affected...Southern Plains

   Concerning...Severe potential...Tornado Watch likely 

   Valid 280030Z - 280130Z

   Probability of Watch Issuance...95 percent

   SUMMARY...Tornado watch will be issued soon across the southern
   Plains from northwest TX across much of OK.

   DISCUSSION...Leading edge of large-scale ascent is spreading across
   the southern high Plains early this evening. Agitated boundary-layer
   cu field is deepening along the dryline over TX, indicative of the
   approaching trough. Convection is expected to increase in areal
   coverage into the southwest flank of ongoing southwest-northeast
   MCS, then gradually shift east. 00z sounding from OUN exhibited very
   strong shear (400m2/s2 0-3km SRH) with MLCAPE around 2300 J/kg,
   though slightly capped. Supercells and thunderstorm clusters are
   expected to continue, and increase in areal coverage later this
   evening as the trough shifts east. New tornado watch is warranted.

   ..Darrow/Smith.. 04/28/2024

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

   ATTN...WFO...TSA...FWD...OUN...SJT...LUB...AMA...

   LAT...LON   34720012 36989633 35859456 33139792 32830002 34720012