164
FXUS66 KLOX 271040
AFDLOX

Area Forecast Discussion
National Weather Service Los Angeles/Oxnard CA
340 AM PDT Fri Jun 27 2025

.SYNOPSIS...27/1204 AM.

Night and morning low clouds and fog will affect the coasts and
some valleys, otherwise mostly clear skies are expected across
the area with gusty onshore winds each afternoon. Temperatures
will change little over the weekend and into early next week.

&&

.SHORT TERM (TDY-SUN)...27/237 AM.

Weak cyclonic flow aloft and an eddy have lifted the marine layer
to about 1300 ft and low clouds have moved into the csts and vlys.
The onshore push to the east will increase from 3 mb this morning
to about 8 mb this afternoon. This will mean another day of slow
clearing with no clearing at some west facing beaches. Slightly
weaker onshore flow to the north will allow for a couple of
degrees of warming for most areas south of Pt Conception while
Central Coast sees little change in temps. Most areas south of Pt
Conception will come in 2 to 4 degrees blo normal while the
Central Coast (with highs mostly in 60s) will end up 4 to 8
degrees under normals.

A little ridge noses in from the SE on Saturday this will smoosh
the marine layer some and will result in less morning marine
clouds in the vlys. The onshore flow will be a little weaker as
well so the low clouds will clear quicker and more completely. Max
temps, as a result, will warm 2 to 4 degrees across the board.

Sunday will be quite similar to Saturday. Onshore flow may be a
little stronger so max temps may cool a degree or two. Look for
mostly 70s across the coasts, 80s in the vlys and upper 80s to mid
90s across the interior and lower mtn elevations.

The moderate onshore push to the east will bring the typical
gusty southwesterly afternoon winds to interior sections (esp the
western Antelope Vly), but speeds will remain below advisory
levels. Additionally, there will be some localized sub advisory
Sundowner winds each evening.

.LONG TERM (MON-THU)...27/1218 AM.

Not much change at all for the xtnd fcst. Both the GFS and EC
agree that a high hgt (582 dam) upper low will develop in the east
pac and then slowly move across the state during the week. This
is a little different than the fcst ydy at this time when the fcst
call for an open trof. Despite the change, this change will not
affect the fcst.

There will be mdt onshore flow in the mornings and stg onshore
flow in the afternoon. This onshore flow pattern coupled with the
cyclonic turning aloft will result persistent night through
morning low cloud pattern. The low clouds will affect almost all
of the csts/vlys and clearing will be on the slow side with some
beaches remaining cloudy all day. Aside from the low clouds skies
will be clear.

Max temps will exhibit little day to day change. Most max temps
will be a few degrees blo normal with the exception for the
Antelope Vly and interior vlys of SLO and SBA counties. Coastal
temps will mostly be in the 70s (a little cooler for the Central
Coast) and the vlys will be in the 80s.

With continued strong afternoon onshore pressure gradients, gusty
southwesterly winds can be expected each afternoon/evening across
interior sections. However, speeds should remain below advisory
levels.

&&

.AVIATION...26/2350Z.

At 2326Z at KLAX, the marine layer was 1200 ft deep. The top of
the inversion was at 2700 ft with a temperature of 25 C.

High confidence in VFR TAFs for KPMD and KWJF.

Low confidence in TAF for KPRB. There is a 40% chance for VLIFR
conds between 11Z and 17Z.

Moderate confidence in remaining TAFs. For KBUR and KVNY, there
is a 30% chance conds remain IFR. For KLAX there is a 20% chance
for brief LIFR conds, and for KSMO, 30% chance minimum flight cat
doesn`t go below IFR. For KOXR, SCT conds may briefly occur
between 01Z and 03Z. There is a chance for brief LIFR cigs at
KOXR (20%) and KSMO (30%). Otherwise, flight cat changes may be
off by 2 hours at all sites.

KLAX...Moderate confidence in TAF. There is a 20% chance for
brief OVC003-004 cigs between 06Z and 16Z. Otherwise, flight cat
changes may be off by 2 hours. There is a 20% chance for no
clearing tomorrow. No significant east wind component expected.

KBUR...Moderate confidence in TAF. There is a 30% chance for cigs
to remain OVC005 or higher once cigs arrive. Flight cat changes
may be off by 2 hours.

&&

.MARINE...27/137 AM.

Small Craft Advisory (SCA) level winds and steep short period
seas of 7 to 9 feet will continue across the Outer Waters through
early to mid morning.

SCA conditions may return as early as Monday afternoon focused
across the Outer Waters with extended guidance hinting at the
continued SCA potential for this area much of the week.

Night to morning dense fog is possible through the weekend,
especially adjacent to the Central Coast.

&&

.LOX WATCHES/WARNINGS/ADVISORIES...
CA...NONE.
PZ...Small Craft Advisory in effect until 9 AM PDT this morning
      for zones 670-673. (See LAXMWWLOX).

&&

$$

PUBLIC...Rorke
AVIATION...Lewis
MARINE...Munroe/Lewis
SYNOPSIS...Lewis

weather.gov/losangeles

Experimental Graphical Hazardous Weather Outlook at:
https://www.weather.gov/erh/ghwo?wfo=lox