TZUTC: 0000   
   MSGID: 167739.weather@1:2320/105 2dac17b1   
   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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   FORMAT: flowed   
   ACUS03 KWNS 181913   
   SWODY3   
   SPC AC 181912   
      
   Day 3 Convective Outlook   
   NWS Storm Prediction Center Norman OK   
   0112 PM CST Thu Dec 18 2025   
      
   Valid 201200Z - 211200Z   
      
   ...NO SEVERE THUNDERSTORM AREAS FORECAST...   
      
   ...SUMMARY...   
   Isolated thunderstorms are possible across western Oregon and   
   northern California late Saturday night.   
      
   ...Synopsis...   
   A broad cyclonic flow regime aloft will develop from the central   
   into the eastern CONUS on Saturday, with an upper trough amplifying   
   from the northern Plains into the Great Lakes. Gradual height rises   
   will occur over the West, with weak flow aloft across the southern   
   tier of states. Late in the period into Sunday morning, height falls   
   will begin across the Pacific Northwest with an approaching wave.   
      
   At the surface, high pressure will exist along the East Coast with   
   southerly winds across the western Gulf and into the southern   
   Plains. While some degree of low-level moisture return will occur,   
   another cold front will push south across the Plains behind the   
   developing Great Lakes system. As a result, any instability over   
   coastal TX/LA should remain capped.   
      
   Chances for thunderstorms will develop late in the period across the   
   Pacific Northwest as a plume of midlevel moisture arrives out of the   
   west. This moistening and warming in the 850-700 mb layer will   
   result in weak elevated instability sufficient for isolated   
   lightning.   
      
   ..Jewell.. 12/18/2025   
      
   $$   
      
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