High temperatures will warm to around average today. Stronger onshore flow will spread cooling inland on Thursday with southwest to west winds for the mountains and deserts gusting to 35 to 45 mph. The flow will turn offshore on Friday with warming for the coast and valleys and continued cooling for the deserts. There will be northeast winds along and below the coastal slopes of the mountains gusting to 35 to 45 mph. Warmer with weaker winds for next weekend with high temperatures warming to around 5 to 10 degrees above average on Sunday. Then cooler and breezy early next week as a low pressure system moves toward the California coast.
For extreme southwestern California including Orange, San Diego, western Riverside and southwestern San Bernardino counties,
(today through Friday), High temperatures will continue to warm today, warming a degree or two near the coast to around 5 degrees inland. High temperatures for today will be around average, ranging from the upper 60s near the coast to the mid to upper 70s for the Inland Empire with the upper 80s for the lower deserts.
A low pressure system moving through the Great Basin and northern Rockies on Thursday will strengthen the onshore flow across southern California. There will be stronger southwest to west winds for the mountains and deserts during the afternoon and evening with gusts to 35 to 45 mph. High temperatures will be a few degrees cooler with high temperatures ranging from the mid to upper 60s near the coast to the lower to mid 70s for the Inland Empire with the mid to upper 60s for the lower deserts. Clouds will increase late tonight into Thursday, then decrease Thursday night.
For late Thursday night and Friday, the lower-level flow will become offshore with north to northeast winds along and below the coastal slopes of the mountains gusting to 35 to 45 mph with isolated gusts to 55 mph. High temperatures for the deserts will be several degrees cooler on Friday while the coast and valleys warm 5 to 10 degrees. High temperatures on Friday will be mostly in the 70s for the coast and valleys to around 80 for the western valleys and inland coastal areas with the lower deserts around 80.
(Saturday through Tuesday), There will be inland warming during the weekend with weaker winds. High temperatures on Saturday will warm 5 to 10 degrees for inland areas. High temperatures on Sunday will warm another 5 degrees or so for the deserts into the mountains while coastal areas into the western valleys are a few degrees cooler. High temperatures on Sunday will be 5 to 10 degrees above average, ranging from the lower 70s near the coast to the lower to mid 80s for the Inland Empire with the lower deserts in the lower 90s. Cooler and breezy for early next week as a Pacific low pressure system moves toward the California coast.
151730z, Coasts, Low clouds based around 2000 ft MSL are currently lingering over southern SD County (vcty KSAN). Scattering out by 1830Z with SKC expected through this evening. Patchy low clouds based 1500-2000 ft MSL expected to redevelop over nearshore waters and coastal areas after 06Z Thu. Coverage will remain patchy through Thursday morning. Chances for BKN cigs at TAF sites: 70% at KSAN, 50% at CRQ, 60% at KSNA.
Otherwise, mostly clear and VFR conditions today through tonight.
Wind gusts to reach around 20 kts near San Clemente Island Thursday afternoon and evening. Otherwise, no hazardous marine conditions are expected through Sunday.
Ca, Wind Advisory from 11 AM Thursday to 2 AM PDT Friday for Apple and Lucerne Valleys.
PZ, None.
