SPC AC 130700

   Day 3 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   0100 AM CST Sat Nov 13 2021

   Valid 151200Z - 161200Z

   ...NO THUNDERSTORM AREAS FORECAST...

   ...SUMMARY...
   Thunderstorms are not forecast across the contiguous United States
   on Monday.

   ...Synopsis and Discussion...
   An upper trough should lift northeastward from the eastern states
   across the western Atlantic and Canadian Maritime provinces on
   Monday. In its wake, upper ridging should generally prevail across
   most of the Rockies and Plains. Another upper trough is forecast to
   move quickly eastward across British Columbia and the Pacific
   Northwest through Monday evening, eventually reaching the northern
   Rockies by the end of the period. Surface high pressure initially
   centered over the Southeast should develop slowly eastward towards
   the Atlantic Coast through the day, while lee troughing develops
   over much of the High Plains. While some low-level moisture return
   should occur across parts of the southern Plains through the period,
   thunderstorms appear unlikely across the CONUS owing to a lack of
   instability overlapping large-scale ascent associated with either
   upper trough.

   ..Gleason.. 11/13/2021

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