textproduct: Los Angeles

SYNOPSIS

21/730 PM.

High pressure building over the region will bring a warming trend to the area through early this coming week with highs rising above seasonal normals by Sunday. Additional warming is likely Thursday into Friday. A storm system moving through northern California will bring a slight chance of rain to northwest San Luis Obispo County late Tuesday and Wednesday.

LONG TERM (WED-SAT)

21/1211 PM.

For the extended, 12Z models continue to exhibit decent synoptic agreement. At upper levels, near persistent conditions will prevail on Wednesday, but the ridge will strengthen Thursday through Saturday. Near the surface, weak onshore flow will prevail on Wednesday, but weak offshore flow will develop Thursday through Saturday.

Forecast-wise, still no significant issues are anticipated. On Wednesday, there will continue to be a chance of light rain across San Luis Obispo county, but dry conditions will prevail elsewhere. Temperatures on Wednesday will be very similar to Tuesday.

For Thursday through Saturday, the building upper level ridge and weak offshore flow will allow for a warming trend across the area with temperatures peaking on Friday (in the mid 70s to mid 80s west of the mountains). Skies will remain mostly clear to partly cloudy, based on high cloud coverage. There will be some offshore winds, but the winds will be weak and localized.

AVIATION

21/2345Z.

At 2345z at KLAX, no inversion and no marine layer were present.

High confidence in TAFs with VFR conditions and light winds through the period. There is a 20% chance of VLIFR conds at KPRB after 09Z-16Z, and a 20% chance of MVFR/IFR cigs for KSBP and KSMX 09Z-16z.

KLAX...High confidence in VFR TAF. Any east wind component on Sunday morning is expected to remain less than 7 knots.

KBUR...High confidence in VFR TAF.

MARINE

21/736 PM.

For the Outer Waters, moderate to high confidence in current forecast. Moderate confidence in conditions remaining below SCA levels through Monday, then NW winds will potentially increase to SCA levels across much of the outer waters Monday night into Tuesday.

For the Inner Waters north of Point Sal, moderate confidence in conditions remaining below SCA levels through Wednesday.

For the Inner Waters south of Point Conception, high confidence in conditions remaining below SCA levels through Wednesday.

LOX WATCHES/WARNINGS/ADVISORIES

CA...Frost Advisory in effect from midnight tonight to 9 AM PST Sunday for zones 348-357-371. (See LAXNPWLOX). PZ...NONE.