Storm Prediction Center Mesoscale Discussion 1667

   Mesoscale Discussion 1667
   NWS Storm Prediction Center Norman OK
   0708 PM CDT Sun Jul 19 2026

   Areas affected...Parts of south-central SD into
   north-central/northeast NE

   Concerning...Severe potential...Watch unlikely 

   Valid 200008Z - 200215Z

   Probability of Watch Issuance...20 percent

   SUMMARY...A locally favorable corridor for a few severe wind gusts
   is evident from south-central South Dakota into north-central and
   northeast Nebraska for the next couple of hours. The severe risk is
   expected to remain too localized for a watch.

   DISCUSSION...A northeast/southwest-oriented cluster of thunderstorms
   is evolving along a surface wind shift in south-central SD.
   Downstream of these storms, temperatures have warmed into the
   middle/upper 90s amid middle/upper 60s to lower 70s dewpoints --
   yielding moderate surface-based buoyancy. Over the next couple of
   hours, thunderstorms will track southeastward along the buoyancy
   gradient amid 30-40 kt of northwesterly deep-layer shear. This could
   support a loosely organized cluster of thunderstorms capable of
   producing a few severe wind gusts. The overall severe risk is
   expected to remain sufficiently localized to preclude a watch
   issuance.

   ..Weinman/Hart.. 07/20/2026

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

   ATTN...WFO...FSD...OAX...ABR...LBF...UNR...

   LAT...LON   42519959 42800013 43170026 43580021 43839989 43919940
               43849879 43479816 42889800 42459841 42399895 42519959 

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