textproduct: Los Angeles

SYNOPSIS

29/1227 PM.

Quiet weather with near seasonal temperatures will prevail the rest of the week. Breezy west to northwest winds will occur across portions of the area at times. Light rain showers are possible late Sunday into Monday.

LONG TERM (SUN-WED)

29/109 PM.

Significant cooling is expected Sunday, especially for valleys and interior areas, as the second of the upper lows drops south along the West coast and onshore flow increases. A few of the ensemble solutions show some light showers developing along the Central Coast as early as Sunday afternoon, but a better chance Sunday night, with chances spreading into Ventura and LA Counties on Monday. Like with the last system, rain amounts will be highest (but still mostly under a quarter inch) along the Central Coast and far south and east LA County where there is the best orographics to squeeze out as much as possible from this relatively weak system where PW's are well under an inch.

Assuming the timing of that last cut off is on track, Tuesday and Wednesday are expected to be dry with 2-5 degrees of warming each day. But can't rule out a delayed arrival of the second system that could delay the warming trend by another day.

AVIATION

29/1755Z.

At 1644Z at KLAX, the marine layer was about 1600 feet deep. The top of the inversion was 2100 feet with a temperature of 14 C.

Overall moderate confidence in the 18Z TAFs due to uncertainties with timing of mostly MVFR cigs for many coastal and vly airfields tonight into Thu morning which could be off +/- 1 to 3 hours. However, confidence in these conds developing is fairly high.

For KPRB, KSBP, KWJF and KPMD, hi confidence in VFR TAFs.

KLAX...Moderate confidence in timing of low clouds and MVFR conds tonight. However, fairly hi confidence in the MVFR conds developing. Cigs of 015-025 should be prevalent aft about 06Z-08Z, altho arrival timing could be anytime between 06Z and 12Z. No significant east wind component is expected.

KBUR...Moderate confidence in timing of low clouds and MVFR conds tonight. However, fairly hi confidence in the MVFR conds developing. Cigs of 020-025 should be prevalent aft about 10Z-12Z, altho arrival timing could be anytime between 08Z and 12Z.

MARINE

29/150 PM.

Moderate to high confidence in Small Craft Advisory (SCA) W-NW winds across the outer waters through late Thursday night. Moderate confidence that conds will then remain near but below SCA levels Friday through Saturday, with winds likely decreasing further on Sunday and Monday.

For the inner waters along the Central Coast, SCA winds are likely each afternoon and evening through Thursday, and just below SCA levels Friday afternoon and evening. This will be followed by lighter winds through the weekend and into Monday.

For the Santa Barbara Channel, SCA winds are likely by early this evening and continue for much of the time through Thursday evening before diminishing later Thursday night. Winds over the western portion of the channel should be just below SCA levels Friday afternoon and evening, otherwise lighter winds can be expected through the weekend into Monday.

For the southern inner waters, winds may approach SCA levels at times Thursday evening and again Sunday evening, otherwise conds will remain below SCA through Monday night.

LOX WATCHES/WARNINGS/ADVISORIES

CA...NONE. PZ...Small Craft Advisory in effect until 3 AM PDT Friday for zones 645-670-673-676. (See LAXMWWLOX). Small Craft Advisory in effect from noon Thursday to 3 AM PDT Friday for zone 650. (See LAXMWWLOX).