ZCZC SPCSWOMCD ALL ACUS11 KWNS 270226 SPC MCD 270226 ARZ000-MSZ000-270400- Mesoscale Discussion 1002 NWS Storm Prediction Center Norman OK 0926 PM CDT Sun May 26 2024 Areas affected...Central/East-Central into Northeast AR Concerning...Tornado Watch 320... Valid 270226Z - 270400Z The severe weather threat for Tornado Watch 320 continues. SUMMARY...New development may occur across central/east-central into northeast AR. The environment is supportive of supercells and convective trends are be monitored closely. An expansion of ongoing Tornado Watches or a new Tornado Watch may be needed if trends merit. DISCUSSION...Recent satellite imagery shows greater vertical development within the cumulus over central AR, with radar returns increasing in this area as well. This appears to be related to a modest area of low-level confluence ahead of the primary wind shift which remains farther northwest. The 00Z LZK sounding sampled a very unstable airmass, with MLCAPE over 3500 J/kg. Strong vertical shear extends across the region as well, with the 00Z LZK sounding sampling 55 kt of 0-6 km bulk shear and the recent LZK VAD sampling over 30 kt of 0-1 km bulk shear. These environmental conditions are more than sufficient for robust updrafts and supercells if dry-air entrainment can be overcome. Convective trends will be monitored closely and an expansion of ongoing Tornado Watches or a new Tornado Watch may be needed if trends merit. ..Mosier/Smith.. 05/27/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...MEG...LZK... LAT...LON 35569188 36049089 35929002 35559011 34469069 34089188 34729292 35569188 NNNN