SPC 1300Z Day 1 Outlook

Day 1 Outlook Image

Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
0645 AM CST Sun Dec 27 2020

Valid 271300Z - 281200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Isolated thunderstorms are possible overnight along the central
California coast.

...Central CA coast overnight...
A midlevel shortwave trough near 36 N and 132 W will progress
eastward toward the central CA coast by 12z Monday.  Cooling
midlevel temperatures and steepening low-midlevel lapse rates will
accompany this trough as it approaches the coast, in the zone of
ascent within the left-exit region of the mid-upper jet.  Satellite
imagery and lightning detection data have revealed a few
thunderstorms with the trough over the eastern Pacific, and the
threat for isolated thunderstorms is expected to increase along the
central CA coast tonight, mainly after about 03-06z.

..Thompson.. 12/27/2020

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