Santa Ana winds will develop and strengthen this morning with gusts to 35 to 45 mph along and below the coastal slopes of the mountains. The winds will weaken some this afternoon with more localized winds with gusts to 30 to 40 mph continuing into Saturday morning. High temperatures will warm for today and Saturday with Saturday high temperatures 10 to 15 degrees above average for the coast and valleys. Inland areas will continue to warm on Sunday while coastal areas begin to cool with only slight changes for Monday and Tuesday. For Wednesday and Thursday, high pressure aloft will weaken and onshore flow will strengthen. High temperatures will cool with Thursday high temperatures a few to around 5 degrees below average.
For extreme southwestern California including Orange, San Diego, western Riverside and southwestern San Bernardino counties,
(today through Sunday), Offshore flow will develop and strengthen this morning with northeast winds gusting to 35 to 45 along and below the coastal slopes of the mountains. The winds will diminish some during this afternoon with more localized winds with gusts to 30 to 40 mph continuing through tonight into Saturday morning.
High temperatures today will warm around 5 degrees for the deserts to around 10 to 15 degrees for the valleys and inland Orange County. There will be additional warming of around 5 degrees for most areas on Saturday. High temperatures on Saturday will range from the 70s near the coast to the 80s for the Inland Empire and inland Orange County with the lower deserts around 90.
For Sunday, onshore flow will bring cooling of a few to around 5 degrees for the coast and valleys with the mountains and deserts warming around 5 degrees. High temperatures on Sunday will range from the lower 70s near the coast to the lower to mid 80s for the Inland Empire with the lower deserts in the mid 90s.
(Monday through Thursday), Not much change is expected for Monday with the coast and valleys slightly cooler on Tuesday with the mountains and deserts slightly warmer. For Wednesday and Thursday, high pressure aloft over California will weaken and onshore flow across southern California will strengthen. This will spread cooling inland of around 5 degrees on Wednesday and another 4 to 8 degrees on Thursday with Thursday high temperatures a few to around 5 degrees below average. High temperatures on Thursday will range from the 60s near the coast to the lower 70s for the valleys and inland Orange County with the lower deserts in the 80s.
There is a slight chance of showers for Wednesday night through Thursday night but with large spread and low confidence in the details.
031200z, Coast/Valleys/Foothills, Iso areas of low clouds 1500- 2000 ft MSL will lead to localized periods of MVFR through 13Z, followed by widespread VFR skies. North to northeast winds will continue to pick up along coastal slopes, foothills, and downwind of the Cajon/Banning Passes into the Inland Empire. Gusts 30-50 kts expected for coastal slopes of the San Bernardino/Santa Ana mtns and just below the Cajon Pass. Gusts 25-35 kts elsewhere. Winds weaken for all areas 03-06Z Sat with gusts over 20 kts becoming confined to coastal slopes.
Mountain ridges/deserts, VFR conditions expected through tonight. North to northeast gusty winds through the Coachella Valley where with gusts 20-30 kts at KPSP and KTRM through early this afternoon.
No hazardous marine conditions expected through Tuesday.
Ca, Wind Advisory until 8 PM PDT this evening for Orange County Inland Areas-San Bernardino County Mountains-San Bernardino and Riverside County Valleys-The Inland Empire-San Gorgonio Pass near Banning-Santa Ana Mountains and Foothills.
PZ, None.
