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   PID: Synchronet 3.21a-Linux master/123f2d28a Jul 12 2025 GCC 12.2.0   
   TID: SBBSecho 3.28-Linux master/123f2d28a Jul 12 2025 GCC 12.2.0   
   BBSID: CAPCITY2   
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   ACUS02 KWNS 100502   
   SWODY2   
   SPC AC 100501   
      
   Day 2 Convective Outlook   
   NWS Storm Prediction Center Norman OK   
   1101 PM CST Tue Dec 09 2025   
      
   Valid 111200Z - 121200Z   
      
   ...NO THUNDERSTORM AREAS FORECAST...   
      
   ...SUMMARY...   
   The risk for thunderstorms appears negligible across the U.S.   
   Thursday through Thursday night.   
      
   ...Discussion...   
   Downstream of an increasingly prominent blocking high building near   
   and to the north of the Aleutians, mid-level developments across the   
   eastern Pacific into western North America are still forecast to   
   include a belt of strong flow veering to an increasing northwesterly   
   component across British Columbia and adjacent portions of the   
   Pacific Northwest, through portions of the Canadian Prairies and   
   northern U.S. Great Plains during this period.  One or two short   
   wave perturbations on the leading edge of this regime will begin to   
   reinforce broad downstream troughing across the Mississippi Valley   
   into western Atlantic.   
      
   Mid-level flow is likely to remain cyclonic as far south as the Gulf   
   Coast states, but heights across much of the South may tend to rise   
   in the wake of a significant lower/mid-tropospheric cyclone forecast   
   to migrate out of the Northeast through the Canadian Maritimes.   
   While progressing farther offshore to the north, it still appears   
   that the primary trailing frontal zone may stall/retreat   
   northeastward across the southern Atlantic Coast through Tennessee   
   Valley vicinity, while advancing southward through the lower   
   Missouri Valley and central Great Plains vicinity by late Thursday   
   night.  At the same time, much colder air probably will continue to   
   gradually nose southward to the lee of the Canadian and northern   
   U.S. Rockies.   
      
   Models indicate that a remnant preceding front will become more   
   diffuse across the central through northwestern Gulf Basin, and a   
   gradual boundary-layer modification may continue across the   
   northwestern Gulf as a weak southerly return flow begins to develop.   
   Some boundary-layer moistening appears possible inland across Texas   
   coastal areas, but forecast soundings indicate that this will occur   
   beneath pronounced warm/dry layers in the lower/mid-troposphere,   
   precluding appreciable destabilization through this period.   
      
   ..Kerr.. 12/10/2025   
      
   $$   
      
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