Mesoscale Discussion 2090 NWS Storm Prediction Center Norman OK 0844 PM CDT Tue Sep 16 2025 Areas affected...portions of northwestern Kansas into central Nebraska Concerning...Severe Thunderstorm Watch 612... Valid 170144Z - 170315Z The severe weather threat for Severe Thunderstorm Watch 612 continues. SUMMARY...Some severe threat will persist for a few more hours, with severe gusts/hail the main threats. DISCUSSION...Currently, two general areas of convection continue to show severe potential. Firstly, a line of thunderstorms has quickly intensified across extreme northwestern KS, along the NE border, in association with several cold pool and convective outflow boundary mergers. These storms will continue to propagate east-southeastward amid a buoyant airmass characterized by 1500 J/kg MLCAPE. In central NE, an embedded bowing structure has produced some measured 50+ kt gusts, and this potential may continue for the next hour or so as well. However, waning buoyancy and increasing MLCINH amid boundary-layer decoupling should gradually reduce severe potential over the next few hours. ..Squitieri.. 09/17/2025 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...OAX...GID...LBF...DDC...GLD... LAT...LON 39130233 39730197 40170150 40880008 41669972 41989934 42059879 41859831 41379814 40839823 40219854 39749882 39429916 39179963 39030031 38980079 38950147 39130233 MOST PROBABLE PEAK WIND GUST...55-70 MPH MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN
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