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   TID: SBBSecho 3.28-Linux master/123f2d28a Jul 12 2025 GCC 12.2.0   
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   ACUS03 KWNS 220829   
   SWODY3   
   SPC AC 220828   
      
   Day 3 Convective Outlook   
   NWS Storm Prediction Center Norman OK   
   0228 AM CST Mon Dec 22 2025   
      
   Valid 241200Z - 251200Z   
      
   ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FOR PORTIONS OF   
   CENTRAL AND SOUTHERN COASTAL CALIFORNIA AND PARTS OF THE CALIFORNIA   
   CENTRAL VALLEY...   
      
   ...SUMMARY...   
   Isolated strong to locally severe thunderstorms are possible on   
   Wednesday and Wednesday night across portions of California.   
      
   ...California...   
   An upper trough over the eastern Pacific and upper ridge over the   
   Great Plains will maintain a belt of strong to intense cyclonic flow   
   across CA north-northeastward into the Interior West.  A lead   
   shortwave trough will move from the OR/CA border northward into WA   
   during the day, while an upstream disturbance moves from the eastern   
   Pacific northeastward into central and northern CA after dark.  A   
   prolonged period of scattered showers and episodic periods of   
   isolated thunderstorms are forecast across CA on Wednesday into   
   Wednesday night.  Relatively cold mid-level temperatures (-20 to -24   
   deg C at 500 mb) will aid in the development of weak instability   
   during the afternoon across portions of the central valley.   
   Elongated hodographs coupled with the potential for a short-duration   
   period of modest surface-based destabilization could yield an   
   isolated risk for a couple of weakly rotating storms.  A risk for   
   localized squalls moving inland near the immediate coast from parts   
   of southern into central CA may focus primarily late Wednesday into   
   Wednesday night ahead of the approaching disturbance.   
      
   Elsewhere, tranquil conditions will prevail across much of the   
   CONUS.   
      
   ..Smith.. 12/22/2025   
      
   $$   
      
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