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 supercells persist along the southern fringe of the expanding complex. Hail likely continues with the stronger supercells, and damaging winds may also be noted, especially as the upstream high-Plains convection surges into the southern flanks of this activity. With time, severe threat should increase into southeastern SD as the LLJ shifts into this region. ..Darrow.. 05/15/2025 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...FSD...OAX...GID...LBF... LAT...LON 41679972 43629871 43309734 41469809 41679972 MOST PROBABLE PEAK TORNADO INTENSITY...85-115 MPH MOST PROBABLE PEAK WIND GUST...65-80 MPH MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN