Day 1 Severe Weather Outlook

Valid 261300Z – 271200Z


Isolated thunderstorms are possible across southern parts of
California and Arizona, although severe storms are not expected.

…Southwest States…
A closed low and peripheral strong polar jet will continue to spread
east-southeastward from near coastal southern California this
morning toward southern Arizona and northwest Mexico through
tonight. Convection will continue to be associated with an
inland-advancing frontal band across coastal SoCal, with isolated
lightning and some semi-organized storm structures remaining
possible early today within a minimally unstable environment
(reference 12Z NKX observed sounding). The potential for isolated
thunderstorms will reach southern Arizona by late this afternoon and

..Guyer.. 12/26/2019


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