SPC AC 210757

   Day 3 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   0157 AM CST Fri Jan 21 2022

   Valid 231200Z - 241200Z

   ...NO THUNDERSTORM AREAS FORECAST...

   ...SUMMARY...
   Thunderstorms are not expected on Sunday.

   ...Synopsis...
   An expansive upper trough is forecast to be in place across much of
   the central and eastern CONUS early Sunday. A shortwave trough is
   expected to progress through this upper trough, moving from the
   Lower OH Valley eastward through the central Appalachians and off
   the Mid-Atlantic Coast. Progression of this shortwave will result in
   some dampening of the upper troughing across the eastern CONUS, with
   a more zonal pattern expected over the region by early Monday. 

   Farther west, an upper low initially centered over the northern Gulf
   of California will trend more progress during the period, moving
   east-northeastward across the Southwest. 

   A stable, continental air mass is expected to be in place over the
   majority of the CONUS, precluding thunderstorm development. The only
   exception is in the vicinity of the upper low moving across the
   Southwest, where cold temperatures aloft could result in limited
   buoyancy. Even with the cold mid-level temperatures, dry low-levels
   will likely keep any potential thunderstorm coverage less than 10
   percent across the region.

   ..Mosier.. 01/21/2022

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