ACUS11 KWNS 242302 SWOMCD SPC MCD 242301 NEZ000-COZ000-250100- Mesoscale Discussion 0522 NWS Storm Prediction Center Norman OK 0601 PM CDT Fri Apr 24 2026 Areas affected...Portions of western Nebraska Concerning...Severe potential...Watch unlikely Valid 242301Z - 250100Z Probability of Watch Issuance...5 percent SUMMARY...Isolated thunderstorms may be capable of producing sporadic strong to severe downburst winds over the next couple of hours. DISCUSSION...Latest lightning data shows a recent uptick in activity associated with a cluster of weak/shallow convection over parts of western NE. This is likely attributable to convection beginning to impinge upon a narrow plume of very modest low-level moisture (dewpoints in the low 30s), which is supporting around 250 to perhaps 500 J/kg SBCAPE. Additional thunderstorm development appears possible over the next couple of hours as this cluster of shallow convection drifts east across the buoyancy axis. Dewpoint depressions on the order of 30-35 F (which hint at deep boundary-layer mixing) coupled with modest effective bulk shear (30-35 knots) may support strong to severe downburst winds to the west of the Highway 83 corridor. Given the meager and narrow plume of the effective warm sector and coming onset of nocturnal cooling, any severe threat is expected to remain fairly localized and relatively short-lived. ..Moore/Leitman.. 04/24/2026 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...LBF...BOU... LAT...LON 41610216 41980205 42330167 42450111 42340061 42060041 41460027 40890040 40480090 40420136 40490181 40570192 40780211 41280220 41610216 MOST PROBABLE PEAK WIND GUST...UP TO 60 MPH MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN