US Mesoscale Discussions

Storm Prediction Center Mesoscale Discussion 1871

Published Date and Time: 2026-08-08 18:46:00



   Mesoscale Discussion 1871
   NWS Storm Prediction Center Norman OK
   0544 PM CDT Sat Aug 08 2026

   Areas affected...portions of central Arizona

   Concerning...Severe potential...Watch unlikely 

   Valid 082244Z - 090015Z

   Probability of Watch Issuance...20 percent

   SUMMARY...A few severe gusts may accompany the stronger storm cores
   through the afternoon and evening hours. The severe threat is
   expected to remain relatively isolated, and a WW issuance is not
   expected.

   DISCUSSION...Multiple pulse cellular storms and multicellular
   clusters have intensified over the past couple of hours as they
   attempt to approach the lower terrain from the Mogollon Rim. As this
   occurs, the storms will overspread a hot boundary layer,
   characterized by surface temperatures over 100 F amid mid 50s F
   dewpoints. Ample evaporative cooling potential exists, as shown by
   22Z mesoanalysis, with 1500-2000 J/kg DCAPE in place. As such,
   despite weaker vertical wind shear, a couple of the stronger storm
   cores may produce dry downbursts capable of supporting severe gusts
   through the afternoon and evening hours. Nonetheless, the severe
   threat should stay somewhat sparse, precluding the need of a WW
   issuance.

   ..Squitieri/Mosier.. 08/08/2026

   ...Please see www.spc.noaa.gov for graphic product...

   ATTN...WFO...TWC...FGZ...PSR...VEF...

   LAT...LON   34571333 34841258 34671140 34211081 33831052 33391046
               33081077 32961148 33021230 33371300 34571333 

   MOST PROBABLE PEAK WIND GUST...55-70 MPH



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