High temperatures will be a few degrees warmer today and again on Friday with coastal low clouds not spreading as far into the valleys for early Friday and early Saturday. It will be cooler for inland areas for the weekend with southwest to west winds for the mountains and deserts for Saturday through Sunday morning gusting to 40 to 50 mph. Inland areas may begin to warm for the middle and latter part of next week.
For extreme southwestern California including Orange, San Diego, western Riverside and southwestern San Bernardino counties,
(today through Saturday), High temperatures will be a few degrees warmer today and again on Friday with Friday high temperatures a few degrees below average for the coast and valleys and 5 to 10 degrees above average for the deserts. High temperatures on Friday will range from the mid to upper 60s near the coast to the mid 70s to lower 80s for the Inland Empire with the lower deserts around 100. Onshore flow will strengthen for Saturday and Sunday with cooling for inland areas. There will be gusty southwest to west winds for the mountains and deserts for Saturday through Sunday morning with gusts to 40 to 50 mph with isolated stronger gusts.
The marine layer is still around 2500 to 3000 feet deep. Satellite imagery at 2 AM shows widespread low clouds over the coastal waters extending inland across the coast and valleys of central and southern San Diego County. Through sunrise, the low clouds should expand northward into Orange County and portions of the Inland Empire. The marine layer will become shallower for Friday and Saturday with night and morning coastal low clouds extending inland into the western valleys.
(Sunday through Wednesday), Sunday high temperatures will be near average for the deserts and a few to around 5 degrees below average elsewhere. Sunday high temperatures will range from the mid to upper 60s near the coast to the mid 70s to lower 80s for the Inland Empire with the lower deserts in the lower to mid 90s. The marine layer will deepen for Saturday night into Sunday morning with coastal low clouds extending farther inland into portions of the inland valleys.
NBM high temperatures for early next week, at least for the coast and valleys, appear to be much too warm, in some locations by more than 5 degrees. For the middle and latter part of next week, there should be at least some inland warming as low pressure across the southwest states weakens.
140930z, Coast/Valleys, Low clouds based 1500-2500 feet MSL with tops to 3000 feet will continue to fill nearly all of the coastal basin by 14Z. Patchy VIS reductions 3-5SM in the Inland Empire; 0- 3SM along the foothills. Scatter out inland 15-16Z, near the coast 17-18Z. Low clouds with similar bases and vis to redevelop at the coast between 01-06Z and inland 06-11Z.
Mountains/Deserts, Westerly wind gusts 25-40 kt increasing again after 21Z. MOD up/downdrafts and local LLWS in lee of mountains. Mostly clear skies today and tonight.
No hazardous marine conditions are expected through Saturday morning. Increasing winds and seas over the outer coastal waters could generate hazardous conditions for small craft Saturday afternoon through Sunday.
Ca, None. PZ, None.
