Mesoscale Discussion 2153
Issued: · Valid: –
Summary
Isolated severe wind gusts of 55 to 70 mph are expected across northern Utah and southeast Idaho from late afternoon through early evening.
Product Text
000 ACUS11 KWNS 272056 SWOMCD SPC MCD 272055 UTZ000-IDZ000-NVZ000-272300- Mesoscale Discussion 2153 NWS Storm Prediction Center Norman OK 0355 PM CDT Thu Aug 27 2026 Areas affected...northern Utah into southeast Idaho Concerning...Severe potential...Watch unlikely Valid 272055Z - 272300Z Probability of Watch Issuance...20 percent SUMMARY...The threat for isolated severe wind gusts is expected to increase through the remainder of this afternoon into early evening. The areal coverage of the threat is expected to remain too limited for a watch consideration. DISCUSSION...Ahead of a subtle disturbance embedded within a moist, mid-level flow regime, a band of thunderstorms is ongoing across eastern Elko County NV and western Tooele County UT as of 2045Z. RAP-based proximity soundings indicate a well-mixed, 3-km deep boundary layer with MLCAPE of generally less than 500 J/kg. Some increase in deep-layer shear is forecast this afternoon, which coupled with the presence of steep low/mid-level lapse rates and strong evaporational-cooling potential in the sub-cloud layer will support a few severe wind gusts as convection progresses from southwest through northeast across the region. ..Mead/Mosier.. 08/27/2026 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...SLC...PIH...LKN... LAT...LON 40961417 42101367 43011221 42511145 41161137 40251199 39911310 39851355 40221417 40961417 MOST PROBABLE PEAK WIND GUST...55-70 MPH