textproduct: Los Angeles

SYNOPSIS

26/319 AM.

There is a slight chance of showers for San Luis Obispo and Santa Barbara Counties tonight through Friday and again on Sunday, otherwise dry weather is expected through New Years Day. Periods of gusty winds are expected today through Friday and again from Monday into New Years Day.

LONG TERM (SUN-WED)

26/316 AM.

On Sunday a dying front will bring a very slight chance of light rain for northwestern San Luis Obispo County. Otherwise and elsewhere dry conditions are expected well into next week. Periods of gusty northerly winds will continue for portions of the area, including the Central Coast, higher terrain, and the I-5 cooridor south through Santa Clarita and the western San Fernando Valley. Winds are favored to peak Monday and Tuesday when strong north-to- south surface pressure gradients and upper level winds are likely.

Offshore flow will prevail Monday onward next week, offering a good chance of mostly sunny skies. Temperatures will be largely above normal Sunday and Wednesday, in the mid 60s to low 70s. Monday and Tuesday, lower 500 mb heights and a cooler airmass will lead to a cooling trend, especially away from the coast, with most temperatures in the 60s.

AVIATION

26/0645Z.

At 06Z at KLAX, there was no marine layer nor an inversion.

Overall, high confidence in TAF package. Expect areas of gusty NW-N winds across SBA County, in the mtns of VTU/L.A. County, and in northern/western valleys of L.A County. There will areas of LLWS, turbulence, and mdt UDDF esp over and near to hier trrn this evening into Thursday morning. Otherwise, expect VFR conds to dominate the fcst pd.

KLAX...Moderate confidence in TAF. There is a 20% chance of northerly cross winds of 10 kt from until 05Z, and a 20% chance of an east wind component of 6-8 kt 14Z-20Z Thu.

KBUR...High confidence in TAF.

MARINE

25/729 PM.

For seas, for the outer waters and the northern inner waters off the Central Coast, seas will remain at or above Small Craft Advisory (SCA) levels thru the weekend, although there may be brief periods of sub-advisory level seas (especially tonight/Thu). For the inner waters S of Pt Conception, SEAS will mostly remain below advisory levels thru the weekend, but will be elevated thru the period, and will get close to SCA levels at times.

For winds across the outer waters, a Gale Warning was issued for the southern zone (PZZ676) through Thu evening, though there may be times that winds drop below Gale Force levels. The best chances for GALE force winds will be from San Miguel to Santa Cruz Island and south, including the waters around and especially to the west of San Nicolas Island.

Otherwise, winds will be near or above SCA levels much of the time thru Sun night across the southern two zones (PZZ673/676).

Across the northern outer waters zone (PZZ670), SCA level winds are expected thru Thursday morning, with a 30-40% of SCA level wind gusts Thursday afternoon/eve for extreme southeastern portions of the zone.

For the northern inner waters (PZZ645), SCA winds are expected (80% chance) during the afternoon/eve hours today, Thur, and Sat.

For the Santa Barbara Channel (PZZ650), SCA level winds are expected (90% chance) across western portions thru Thu night, with a 40-50% chance of SCA level winds in eastern portions in the afternoon/eve hours Thursday. Fri thru Sun, SCA conds are likely (60% chance) in western portions in the afternoon/eve hours.

LOX WATCHES/WARNINGS/ADVISORIES

CA...High Surf Advisory in effect until 4 PM PST Sunday for zones 340-346-354. (See LAXCFWLOX). Wind Advisory remains in effect until noon PST Friday for zones 349-351>353. (See LAXNPWLOX). Wind Advisory remains in effect until 10 PM PST Friday for zones 376>378. (See LAXNPWLOX). Wind Advisory remains in effect from 10 AM to 10 PM PST Friday for zones 381>383. (See LAXNPWLOX). PZ...Small Craft Advisory in effect until 3 AM PST Tuesday for zones 645-670-673. (See LAXMWWLOX). Small Craft Advisory in effect until 3 AM PST Saturday for zone 650. (See LAXMWWLOX). Small Craft Advisory in effect until 3 AM PST Friday for zone 655. (See LAXMWWLOX). Gale Warning in effect until 9 PM PST this evening for zone 676. (See LAXMWWLOX).