textproduct: San Diego

SYNOPSIS

The marine layer will remain near 5000 feet deep today with patchy drizzle and light rain at times from the deep marine layer, mainly during nights and mornings into Thursday morning. The marine layer will then decrease in depth into next week with night and morning coastal low clouds only spreading into the western valleys at times for next week. Southwest to west winds for the mountains and deserts will continue through tonight with gusts to 40 to 50 mph and isolated gusts to 65 mph through the passes. High temperatures today will be as much as 20 to 25 degrees below average for the mountains. High temperatures on Thursday will warm a few degrees. The warming trend will continue through the middle of next week with high temperatures for Wednesday of next week around 8 to 12 degrees above average for inland areas, into the 90s for the Inland Empire and to near 110 for the lower deserts.

SHORT TERM (Today through Friday)

The marine layer is around 5000 feet deep. There have been some light showers at times since Tuesday evening with rainfall mostly a few hundredths of an inch. Coverage of these light amounts have been greatest for San Diego County from the coast to the mountains, in southern Orange County, and along portions of the coastal slopes of the San Bernardino Mountains.

The marine layer will remain near 5000 feet deep today with patchy drizzle and light rain at times from the deep marine layer, mainly during nights and mornings into Thursday morning. The marine layer will then decrease in depth into next week. Southwest to west winds for the mountains and deserts will continue through tonight with gusts to 40 to 50 mph and isolated gusts to 65 mph through the passes.

High temperatures today will be as much as 20 to 25 degrees below average for the mountains with high temperatures mostly in the 60s for the coast, valleys, and high desert, in the 40s and 50s for the mountains, and in the upper 70s to mid 80s for the lower deserts. High temperatures will warm a few degrees on Thursday and another 8 to 12 degrees for inland areas on Friday. High temperatures on Friday will still be around 10 degrees below average for the valleys and deserts and 10 to 15 degrees below average for the mountains. High temperatures on Friday will range from the mid to upper 60s near the coast to the lower to mid 70s for the Inland Empire with the lower deserts in the mid to upper 80s.

LONG TERM (Saturday through Tuesday)

The warming trend will continue through the middle of next week with high temperatures for inland areas for Wednesday of next week around 8 to 12 degrees above average. High temperatures for Wednesday of next week will range from the lower to mid 70s near the coast to the upper 80s to mid 90s for the Inland Empire with 105 to 110 for the lower deserts. The marine layer will become shallower into next week with night and morning coastal low clouds for mext week spreading into portions of the western valleys late each night.

AVIATION

271200Z...Coast/Valleys/Foothills...A fairly chaotic sky is in place this morning, with cloud bases varying between 2000-5000ft MSL. A main BKN-OVC deck around 3500-5000ft MSL is in place across the coastal basin, with patches of DZ/-RA mixed in, brining occasional CIGs around 2500ft. Another round of light showers and occasional MVFR CIGs is expected around 14-18z this morning, followed by largely VFR ceilings into the afternoon with local instances of scattering across inland valleys. A very similar scenario is expected again Wednesday night into Thursday, with a dominant VFR deck mixed in with patches of DZ/-RA and MVFR CIGs beginning after 03z Thurs. Higher Mountains/Deserts...Mostly clear skies and VFR conditions expected through the TAF period. While winds are in a relative lull early this morning, gusts to 25-35 kts remain possible through mountain passes. Widespread gusts pick back up 21-00z this afternoon, with common gusts of 25-35 kts, locally up to 50 kts through passes. Winds gradually taper off between 06-09z Thursday, but remain elevated through passes overnight again.

MARINE

Elevated winds (20-25 knots) and seas (6-8 feet) continue through late this morning in the outer waters, particularly near San Clemente Island. These conditions may generate hazardous conditions for small craft, and a Small Craft Advisory remains in effect until 1 PM this afternoon. Winds and seas decrease this afternoon into this evening, with no hazardous marine conditions expected thereafter through Sunday.

SKYWARN

Skywarn activation is not requested. However weather spotters are encouraged to report significant weather conditions.

SGX WATCHES/WARNINGS/ADVISORIES

CA...Wind Advisory until 5 AM PDT Thursday for Riverside County Mountains-San Diego County Deserts-San Diego County Mountains-San Gorgonio Pass near Banning.

PZ...Small Craft Advisory until 1 PM PDT this afternoon for Waters from San Mateo Point to the Mexican Border Extending 10 to 60 nm out including San Clemente Island.