TZUTC: 0000   
   MSGID: 168140.weather@1:2320/105 2dbd4691   
   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   
   CHRS: ASCII 1   
   FORMAT: flowed   
   ACUS01 KWNS 311955   
   SWODY1   
   SPC AC 311954   
      
   Day 1 Convective Outlook   
   NWS Storm Prediction Center Norman OK   
   0154 PM CST Wed Dec 31 2025   
      
   Valid 312000Z - 011200Z   
      
   ...NO SEVERE THUNDERSTORM AREAS FORECAST...   
      
   ...SUMMARY...   
   Isolated thunderstorms may occur across parts of southern California   
   late tonight into early Thursday morning.   
      
   ...20Z Update Discussion...   
   No changes are made to the outlook for this issuance.   
      
   ..Broyles.. 12/31/2025   
      
   .PREV DISCUSSION... /ISSUED 1010 AM CST Wed Dec 31 2025/   
      
   ...Synopsis and Discussion...   
   With upper ridging remaining prominent over the western CONUS and   
   upper troughing centered across the eastern states, thunderstorm   
   potential should remain minimal though tonight for a large majority   
   of the CONUS. One exception will be across parts of southern CA late   
   tonight into early Thursday morning, as an upper trough/low over the   
   eastern Pacific gradually approaches the CA Coast by the end of the   
   period. While low-level moisture and related instability are both   
   expected to remain limited, increasing large-scale ascent and   
   gradually cooling mid-level temperatures preceding the upper   
   trough/low may still support isolated convection capable of   
   producing occasional lightning flashes, mainly after 01/06Z. Both   
   MUCAPE and deep-layer shear appear too weak to support a meaningful   
   threat for organized severe thunderstorms through the end of the   
   period (12Z Thursday morning).   
      
   $$   
      
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   --- SBBSecho 3.28-Linux   
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