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Aug 4, 2020 0730 UTC Day 3 Severe Thunderstorm Outlook
Updated: Tue Aug 4 07:23:12 UTC 2020 (Print Version | 20200804 0730Z Day 3 shapefile | 20200804 0730Z Day 3 KML)
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 Forecast Discussion
   SPC AC 040723

   Day 3 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   0223 AM CDT Tue Aug 04 2020

   Valid 061200Z - 071200Z

   ...NO SEVERE THUNDERSTORM AREAS FORECAST...

   ...SUMMARY...
   The chance for severe thunderstorms on Thursday appears low at this
   time.

   ...Northern Rockies to central High Plains Vicinity...

   A shortwave trough over the Pacific Northwest states early Thursday
   will develop eastward across the northern Rockies by Friday morning.
   As this occurs, an upper ridge centered along the High Plains will
   develop eastward across the Great Plains. South/southeasterly low
   level flow should transport at least modest boundary layer moisture
   north and west across the northern Plains into eastern/central MT.
   However, forecast guidance varies quite a bit with regards to
   moisture return across MT and the western Dakotas. This is resulting
   in large spread in instability and convective precipitation signals
   across the region. Nevertheless, as the upper trough shifts
   eastward, resulting in height falls across the northern Rockies, at
   least some thunderstorm potential will exist across the region. A
   cold front is forecast to track east across MT during the
   evening/overnight hours, to near the MT/ND border by Friday morning.
   While isolated thunderstorms are expected ahead of trough over a
   broad area from north-central MT southeastward to the eastern WY/CO
   High Plains, coverage of strong/severe convection remains too
   uncertain to include severe probabilities at this time.

   ..Leitman.. 08/04/2020

   CLICK TO GET WUUS03 PTSDY3 PRODUCT

   NOTE: THE NEXT DAY 3 OUTLOOK IS SCHEDULED BY 0730Z

        
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Page last modified: August 04, 2020
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