High pressure aloft and weak offshore lower-level flow will continue well-above average high temperatures for the coast and western valleys through Wednesday. Cooling will begin to spread inland on Thursday with slower cooling and chances for showers for Friday through Monday.
For extreme southwestern California including Orange, San Diego, western Riverside and southwestern San Bernardino counties,
, UPDATED AVIATION, MARINE, AND BEACHES DISCUSSIONS,
(today through Thursday), Not much change is expected for today and Wednesday with high pressure aloft and weak offshore lower-level flow. High temperatures will range from around 5 degrees above average for the mountains and deserts to 10 to 15 degrees above average for the coast and western valleys in San Diego County. High temperatures for the coast and valleys will be in the upper 70s to upper 80s. The warmest high temperatures, in the mid to upper 80s, will be for inland coastal areas into the western valleys.
High pressure aloft will begin to weaken on Thursday and onshore flow returns and strengthens. Thursday high temperatures will cool slightly for the deserts to around 5 degrees for the coast and valleys. High temperatures on Thursday for the coast and valleys will be mostly in the mid 70s to mid 80s, for the lower deserts in the mid 80s, and for the mountains in the 50s and 60s.
(Friday through Monday), Cooler with chances for precipitation for Friday into next week. With the cooling, high temperatures on Monday will be as much as 5 to 10 degrees below average for the mountains, valleys, and high desert with high temperatures on Monday for the coast and valleys mostly in the 60s and lower 70s, for the lower deserts in the mid to upper 70s, and for the mountains in the 40s and 50s.
A low pressure system moving inland through northern and central Baja around Friday will bring a chance of showers for late Thursday night and Friday. A low pressure system moving inland through northern and central California on late Friday and Saturday will continue the chance of showers for southwestern California for Friday night and Saturday. Another low pressure system moving to near the California coast on late Sunday could bring additional rainfall to southwestern California for Sunday night and Monday.
101130z, Mostly clear skies and VFR conditions today and tonight.
No hazardous marine conditions are expected through Friday. Winds increase late Friday and seas build Saturday, which could lead to hazardous boating conditions.
Surf of 3-7 feet will lead to a high rip current risk and hazardous swimming conditions today, particularly in San Diego County. A Beach Hazards Statement in effect for these beaches through this evening contains the details.
This morning's high tide will likely exceed 7 feet before tides gradually lower through the week. Minor coastal flooding is expected, especially combined with the higher surf on west-facing beaches. A Coastal Flood Advisory remains in effect through noon today for all beaches.
Ca, Beach Hazards Statement through this evening for San Diego County Coastal Areas.
Coastal Flood Advisory until noon PST today for Orange County Coastal Areas-San Diego County Coastal Areas.
PZ, None.
