ACUS11 KWNS 010811 SWOMCD SPC MCD 010811 NEZ000-COZ000-011015- Mesoscale Discussion 1103 NWS Storm Prediction Center Norman OK 0311 AM CDT Sat Jun 01 2024 Areas affected...NE Panhandle Concerning...Severe potential...Watch possible Valid 010811Z - 011015Z Probability of Watch Issuance...40 percent SUMMARY...Potential for isolated large hail should persist through sunrise with a few elevated supercells across the western Nebraska Panhandle vicinity. DISCUSSION...A trio of elevated supercells have formed as a result of a well-advertised overnight increase in low-level moisture northward over the central High Plains. The northwestern most of this trio, near Alliance, appears to be the deepest updraft. With MUCAPE having increased to about 1000 J/kg coupled with moderate northwesterly deep-layer shear, the threat for large hail will probably persist for a few hours through at least sunrise. Low-level flow appears to be relatively modest, yielding some uncertainty on how long the severe hail threat will last. 00Z HREF signal suggests relatively shorter-lived supercells should be expected, although the 00Z NSSL-MPAS runs indicated potential for a longer-lived, more intense storm occurring. ..Grams/Thompson.. 06/01/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...LBF...BOU...CYS... LAT...LON 42660296 42330220 41930131 41520105 41100092 40930121 40970205 41140265 41730336 42100373 42470385 42660296