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SPC Dec 28, 2023 0700 UTC Day 2 Convective Outlook

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SPC 0700Z Day 2 Outlook
Day 2 Outlook Image
Day 2 Convective Outlook  
NWS Storm Prediction Center Norman OK
1245 AM CST Thu Dec 28 2023

Valid 291200Z - 301200Z


Isolated thunderstorms are possible along parts of the
northern/central California coast on Friday.


An amplified upper pattern will persist over the CONUS on Friday
with a trough slowly migrating across the eastern U.S., while an
upper ridge shifts east across the Intermountain West/Rockies. The
main feature of interest with regards to thunderstorm potential will
be an upper trough over the eastern Pacific, shifting east toward
the Pacific coast late in the period. Deep-layer southwesterly flow
ahead of the trough will bring increasing low- and mid-level
moisture to coastal CA. Steepening midlevel lapse rates via cooling
aloft will be sufficient for the development of weak instability
Friday night/early Saturday morning. Isolated lightning flashes will
be possible along the northern and central CA coast, mainly after
00z. Severe storms are not expected. 

Dry and stable conditions across most of the rest of the CONUS will
preclude thunderstorm potential.

..Leitman.. 12/28/2023

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