Severe Storm Outlook Narrative (AC)
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Issued by NWS
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372 ACUS11 KWNS 200027 SWOMCD SPC MCD 200026 NEZ000-COZ000-200130- Mesoscale Discussion 1685 NWS Storm Prediction Center Norman OK 0726 PM CDT Fri Jul 19 2024 Areas affected...Portions of southwest Nebraska and extreme northeast Colorado Concerning...Severe Thunderstorm Watch 555...557... Valid 200026Z - 200130Z The severe weather threat for Severe Thunderstorm Watch 555, 557 continues. SUMMARY...The most favorable corridor for a continued risk for severe hail and wind appears to be over parts of southwest Nebraska and extreme northeast Colorado through at least 02Z. DISCUSSION...The greatest severe risk appears to be focused across portions of southwest Nebraska and perhaps extreme northeast Colorado through around 02Z. Here, temperatures in the lower 90s amid upper 50s/lower 60s dewpoints (lower with westward extent) are still yielding moderate surface-based instability -- given steep midlevel lapse rates (see LBF 00Z sounding). Additionally, regional VWP shows around 40-50 kt of deep-layer shear (with modest low-level hodograph curvature), which will favor a continuation of semi-discrete supercells, capable of producing hail around 2 inches in diameter and gusts upwards of 75 mph. ..Weinman.. 07/20/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...LBF...GLD...BOU...CYS... LAT...LON 41000098 40770085 40410061 40140071 40100123 40350205 40610252 41050299 41370315 41680321 41790298 41800268 41590239 41450209 41420172 41390137 41230112 41000098