Cooler and breezy weather will continue today with west winds in the mountains and deserts gusting to 35 to 45 mph. Strengthening high pressure aloft and offshore flow will bring warming and drying for Friday and Saturday. Northeast winds along and below the coastal slopes of the mountains will gust to 35 to 45 mph on Friday and 25 to 35 mph on Saturday. High temperatures will warm from a few degrees below average today to as much as 10 to 15 degrees above average on Saturday. Inland areas will continue to warm on Sunday while coastal areas begin to cool with cooling spreading inland on Monday. Tuesday will be slightly warmer, then a few degrees cooler for next Wednesday.
For extreme southwestern California including Orange, San Diego, western Riverside and southwestern San Bernardino counties,
(today through Friday), Cooler and breezy weather will continue for today with high temperatures around average near sea level to a few to around 5 degrees below average for the valleys, mountains, and inland Orange County. High temperatures for today for the coast and valleys will be mostly in the 60s and lower 70s with the lower deserts in the 80s. The NKX sounding on late Wednesday afternoon showed an inversion base near 5500 feet with satellite imagery showing low clouds banked up along the lower coastal slopes of the mountains. For today into this evening, west winds for the mountains and deserts will gust to 35 to 45 mph.
For Friday and Saturday, offshore flow and weakening of low pressure aloft will bring warming and drying. Northeast winds along and below the coastal slopes of the mountains are expected to be strongest during the day on Friday with gusts to 35 to 45 mph. Winds will weaken some on Saturday with gusts to 25 to 35 mph. High temperatures on Friday will warm as much as 8 to 12 degrees for valleys and inland Orange County. High temperatures on Saturday will be a few degrees warmer near the coast to 4 to 8 degrees warmer for inland areas. High temperatures on Saturday will be as much as 10 to 15 degrees above average for the coast and valleys with high temperatures ranging from the 70s to around 80 near the coast to the 80s for the valleys with the lower deserts around 90.
(Sunday through Wednesday), On Sunday, onshore flow will spread cooling into coastal areas while the deserts continue to warm. Cooling will spread inland on Monday with Monday high temperatures a few degrees above average near the coast to 5 to 10 degrees above average for inland areas. Monday high temperatures will range from around 70 near the coast to the upper 70 to mid 80s for the Inland Empire with the lower deserts in the lower to mid 90s. Tuesday will be slightly warmer with Wednesday a few degrees cooler.
020930z, Coast/Valleys/Foothills, SCT-BKN clouds with bases between 2500-4500 feet MSL will continue today. Local terrain obscuration in foothills. Greater scatter out expected after 17-18Z, especially near the coast and vcnty KSNA/KONT, with areas of BKN clouds persisting in western San Diego County. Low clouds around 2000-3000 feet MSL to cover western San Diego County 01-08Z. Rapid clearing after 09Z overnight into Friday morning.
Mountain ridges/deserts, VFR conditions today through tonight. Strong westerly winds with gusts 30-45 kts over ridges, through passes, on desert slopes and locally into deserts through 03Z. Gusts reaching 25-35 kts along the floor of the lower desert. Areas of BLDU expected with vis 3-5SM, especially in the High Desert. Winds diminish and turn northeast after 09Z tonight into Friday.
Northwest wind gusts will occasionally exceed 20 knots near San Clemente Island this afternoon and evening. Otherwise, no hazardous marine conditions expected through Monday.
Ca, Wind Advisory until 11 PM PDT this evening for Apple and Lucerne Valleys-Coachella Valley-Riverside County Mountains-San Bernardino County Mountains-San Diego County Deserts-San Diego County Mountains-San Gorgonio Pass near Banning.
PZ, None.
