Mesoscale Discussion 0465
NWS Storm Prediction Center Norman OK
1103 PM CDT Wed Apr 28 2021
Areas affected...Centarl and Northeast Texas
Concerning...Tornado Watch 121...122...
Valid 290403Z - 290600Z
The severe weather threat for Tornado Watch 121, 122 continues.
SUMMARY...A severe threat is expected to continue into the early overnight hours from the Texas Hill Country north-northeastward into parts of northeast Texas. Large hail, wind damage and an isolated tornado threat will be possible with the stronger thunderstorms.
DISCUSSION...The latest radar imagery from San Antonio and Fort Worth shows several strong to severe thunderstorms located from between Del Rio and San Antonio extending northward to near Stephenville, Texas.
The storms are located along and just to the west of an inverted surface trough. The RAP shows an axis of moderate instability near the surface trough with MLCAPE estimated in the 2000 to 3000 J/kg range. WSR-88D VWPs near this axis of instability have 0-6 km shear in the 55 to 65 kt range. The instability and shear will likely keep the severe threat going late this evening into the early overnight period. Large hail and wind damage will be the primary threats with supercells that persist. An isolated tornado threat may also exist with any supercell that is dominant. #txwx #spc #mcd0465 #weatheraware ...
