SPC 1200Z Day 1 Outlook

Day 1 Outlook Image

Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
1053 PM CST Sat Dec 26 2020

Valid 271200Z - 281200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
A few thunderstorms are possible Sunday night along the central
California coast.

...Central CA Coast...

Exit region of a 110+kt 500mb speed max will spread across the
central CA coast during the latter half of the period. Strongly
diffluent flow aloft, and steepening lapse rates after 28/00z, will
become increasingly favorable for convective development immediately
ahead of a cold front that should surge toward the coast by the end
of the day1 period. Forecast soundings suggest weak surface-based
buoyancy will be sufficient for a few lightning flashes with the
strongest updrafts, especially with near-frontal convection. This
activity will not spread very far inland before sunrise.

..Darrow.. 12/27/2020

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