ZCZC SPCSWOMCD ALL ACUS11 KWNS 150027 SPC MCD 150027 ARZ000-TXZ000-OKZ000-150230- Mesoscale Discussion 0246 NWS Storm Prediction Center Norman OK 0727 PM CDT Thu Mar 14 2024 Areas affected...Southeast Oklahoma...Northeast Texas Concerning...Severe Thunderstorm Watch 45...46... Valid 150027Z - 150230Z The severe weather threat for Severe Thunderstorm Watch 45, 46 continues. SUMMARY...All severe hazards, including large hail, wind damage and a potential for a few tornadoes are expected over the next couple hours from southeast Oklahoma into northeast Texas east-northeastward into central Arkansas. DISCUSSION...Several discrete supercells are currently ongoing from the vicinity of the Red River north of Dallas, east-northeastward into southwest Arkansas. The storms are located just to the north and west of a pocket of moderate instability, where MLCAPE is near or above 2500 J/kg. The cluster of strong to severe storms will continue to move eastward into the stronger instability over the next couple of hours. This, combined with moderate deep-layer shear, will help sustain the stronger updrafts making large hail likely with supercells. Hailstones greater than 2 inches in diameter will be possible with the strongest of updrafts. In addition, low-level shear is forecast to gradually increase, as a 40 knot jet develops across the Ark-La-Tex early this evening. In response, the tornado threat may continue. The WOFS currently is forecasting a locally greater tornado risk from Little Rock extending west-southwestward to near the Oklahoma-Arkansas state line over the next couple of hours. ..Broyles.. 03/15/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...LZK...SHV...TSA...FWD...OUN... LAT...LON 35379388 35239546 34919623 34189659 33459663 33229639 33289579 33429447 33689296 33949204 34509149 35049140 35419208 35379388 NNNN