SPC MD 782
MD 0782 CONCERNING SEVERE THUNDERSTORM WATCH 249... FOR NORTHERN NEBRASKA...SOUTHEAST SOUTH DAKOTA Mesoscale Discussion 0782 NWS Storm Prediction Center Norman OK 1011 PM CDT Wed May 14 2025 Areas affected...Northern Nebraska...Southeast South Dakota Concerning...Severe Thunderstorm Watch 249... Valid 150311Z - 150445Z The severe weather threat for Severe Thunderstorm Watch 249 continues. SUMMARY...Severe thunderstorms will continue propagating northeast. DISCUSSION...Low-level warm advection is strengthening across northeast NE into southeast SD as LLJ focuses into this region of the Plains. Latest radar data supports this with gradual convective expansion through storm mergers and clustering. A broader MCS may be evolving, though a few