SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1033 AM CST Mon Dec 28 2020 Valid 281630Z - 291200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected through early Tuesday. ...Southern CA... Low-topped showers with isolated thunderstorms will remain possible into this evening within a steep low to mid-level lapse environment amid meager buoyancy. The thunder threat will subside from west to east along the coast as the final impulse embedded within the broader shortwave trough (currently just offshore of Santa Barbara county) moves southeast towards San Diego. ...Northern OK and southern KS... Strengthening warm/moist advection between 850-700 mb may yield scant MUCAPE by 09-12Z. A swath of elevated convection is expected to develop during this time frame and sporadic lightning flashes will be possible. ..Grams.. 12/28/2020
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