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SPC Dec 28, 2023 1730 UTC Day 2 Convective Outlook

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SPC 1730Z Day 2 Outlook
Day 2 Outlook Image
Day 2 Convective Outlook  
NWS Storm Prediction Center Norman OK
1124 AM CST Thu Dec 28 2023

Valid 291200Z - 301200Z


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

...Synopsis and Discussion...
An amplified upper-air pattern will exist on Friday, with a large
upper trough and low over the eastern CONUS, and a ridge over the
West.  Another upper trough will affect the West Coast, bringing
cooling aloft and increasing midlevel moisture. 

Weak elevated instability may support sporadic lightning flashes
within the warm advection zone preceding the cold front from
northern CA into western OR, with further destabilization taking
place overnight as the cold front approaches the Coast. The greatest
threat of isolated thunderstorms will be after 06Z, coincident with
the coolest temperatures aloft. Forecast soundings show little if
any threat of severe weather, given weakening shear beneath the
upper trough axis.

Elsewhere, high pressure extending into the Gulf of Mexico will
maintain offshore winds, with no thunderstorms forecast across the
remainder of the CONUS.

..Jewell.. 12/28/2023

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