Area Forecast Discussion
National Weather Service Los Angeles/Oxnard CA
326 AM PST Sat Mar 12 2022
Decreasing northeast winds with warming temperatures through Saturday. After some cooling on Sunday, temperatures are expected to remain above normal through next week, with gusty north winds at times.
SHORT TERM (TDY-MON)...12/325 AM.
It`s a quiet morning after our Santa Ana winds of yesterday have wound down. Marine layer clouds may briefly reach northern portions of the San Luis Obispo County Coast, but otherwise clear skies are expected. Offshore winds through the Santa Ana prone areas will build into this morning, but with the lack of upper level support, they will remain below advisory levels. These winds will be focused on the San Gabriel Mountains, the eastern Ventura County Valleys, and coastal areas from Oxnard to Point Dume. A weak trough swings through the region mid-day, returning northwest flow and supporting a good afternoon sea breeze at the coasts. This feature will also help increase the offshore SBA-SMX gradient, which is forecast to peak near -4 mb. Considering the strong gradient and last night`s Sundowner winds reached 28 mph with isolated gusts to 37 mph, a wind advisory will likely be needed. Expecting advisory level winds in the 35 to 45 mph range this evening into early Sunday morning over western portions of the Santa Barbara South Coast.
Increasing onshore flow Sunday will lead to around 5 degrees of cooling for most coast/valley areas as well as some morning marine layer clouds along the Central Coast and possibly southern portions of LA County. Sunday evening into Monday morning, there`s a chance for advisory level northerly winds from the Santa Barbara County Mountains to the LA County Mountains, extending to the Antelope Valley. Sundowner winds along the Santa Barbara South Coast will likely make another appearance Sunday night, but weaker in strength.
By Monday gradients to the east will also be turning offshore and a low grade Santa Ana will develop, but likely not strong enough for advisory level winds. However, the combo of light offshore flow and a building ridge aloft will pump temps back up well into the 70s and likely some lower 80s for the valleys.