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SPC Dec 21, 2023 0600 UTC Day 1 Convective Outlook

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SPC 1200Z Day 1 Outlook
Day 1 Outlook Image
Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
1148 PM CST Wed Dec 20 2023

Valid 211200Z - 221200Z


Isolated thunderstorms are possible across parts of central/southern
California and southern Arizona. Severe thunderstorms are not

A deep-layer cyclone is forecast to move slowly southeastward off of
the southern CA and Baja California coast during the day, before
potentially accelerating eastward late in the period. Based on the
trajectory of this system, most thunderstorm activity will likely
remain offshore through the day, though isolated thunderstorms will
be possible across coastal regions of southern California. With
inland destabilization forecast to remain quite weak and stronger
deep-layer flow/shear expected to remain offshore,
severe-thunderstorm potential appears limited, though a strong storm
or two cannot be ruled out across the Channel Islands and immediate

Overnight, some threat for isolated thunderstorms may spread across
interior southern CA into southern AZ, as the low begins to move

..Dean/Squitieri.. 12/21/2023

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