SPC 1200Z Day 1 Outlook
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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