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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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   ACUS03 KWNS 221928   
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   SPC AC 221927   
      
   Day 3 Convective Outlook   
   NWS Storm Prediction Center Norman OK   
   0127 PM CST Mon Dec 22 2025   
      
   Valid 241200Z - 251200Z   
      
   ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS MUCH OF   
   COASTAL CALIFORNIA AND PORTIONS OF THE CENTRAL VALLEY...   
      
   ...SUMMARY...   
   Isolated strong to occasionally severe thunderstorms are possible on   
   Wednesday and Wednesday night across portions of California.   
      
   ...Synopsis...   
   A pronounced upper ridge will remain anchored over the central and   
   eastern US while strong troughing persists over the West Coast. A   
   series of embedded impulses will move onshore Wednesday and   
   Wednesday night, coincident with their attendant deepening surface   
   lows. A cold front and persistent southwesterly low-level flow   
   should support isolated thunderstorms over much of the West Coast   
   through early Thursday.   
      
   ...California...   
   As troughing deepens over the eastern Pacific, several embedded   
   disturbances will propagate eastward overspreading modest low-level   
   moisture from the CA coast to the central valley. Robust forcing for   
   ascent and cold temperatures aloft (-24 to -26 C) overspreading 50s   
   F dewpoints will likely support weak buoyancy along the southern CA   
   coast and central Valley. A prolonged period of scattered showers   
   and episodic periods of isolated thunderstorms are possible   
   Wednesday morning and afternoon. Of these storms, sufficient CAPE,   
   strong flow aloft and locally enlarged hodographs may allow for a   
   few semi-organized/weakly rotating storms to mature. Sporadic   
   damaging gusts, small hail and a brief tornado would be possible   
   with the strongest storms before convection weakens into the evening   
   and first part of the overnight hours.   
      
   Additional low-topped linear storms/localized squalls are also   
   possible ahead of the advancing cold front near the immediate   
   coastal portions of central and northern CA primarily late Wednesday   
   into Wednesday night. A few strong gusts are possible, though   
   instability should quickly decrease inland.   
      
   Elsewhere across the US, the prominent ridging will favor dry and   
   unseasonably warm conditions with little potential for   
   thunderstorms.   
      
   ..Lyons.. 12/22/2025   
      
   $$   
      
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