ZCZC SPCSWOMCD ALL ACUS11 KWNS 082228 SPC MCD 082228 ARZ000-TXZ000-OKZ000-090030- Mesoscale Discussion 0711 NWS Storm Prediction Center Norman OK 0528 PM CDT Wed May 08 2024 Areas affected...Central Texas...eastern Oklahoma...northwest Arkansas Concerning...Tornado Watch 208...210... Valid 082228Z - 090030Z The severe weather threat for Tornado Watch 208, 210 continues. SUMMARY...Storm development looks increasingly likely near and north of the DFW metro. The primary risk will be very large hail and severe wind gusts, though a tornado is also possible. DISCUSSION...Storm development in northeastern Oklahoma is showing some signs of back-building to the south. In central Texas, an isolated supercell is ongoing southwest of Waco. Overall, the expectation is for there to be an increase in storm coverage over the next 1-2 hours. The most likely area for this to occur, given visible satellite trends, is from the DFW metro northward into parts of south-central Oklahoma. Cumulus have shown increasing signs of vertical development and initiation seems likely in the near future. Very large buoyancy, 45-55 kts of effective shear, and steep mid-level lapse rates will promote a risk for very large hail (2-4.5 inches) and severe wind gusts. The tornado threat is a little less clear given the weak low-level shear, but MLCAPE values of greater than 3500 J/kg will allow for ample stretching of vorticity along the boundary. Storms should remain discrete at least for a period. The very large MLCAPE values suggest there could be some stronger downdrafts that may lead to some upscale growth into a cluster that would propagate into the buoyancy axis in northeast Texas/southeast Oklahoma. ..Wendt.. 05/08/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...LZK...SHV...TSA...FWD...OUN...EWX... LAT...LON 31359813 32899735 35089617 36199547 36509515 36409439 36199404 35599368 35119394 31699579 30899645 30569749 30709809 31359813 NNNN