686
FXUS66 KLOX 291737
AFDLOX

Area Forecast Discussion...UPDATED
National Weather Service Los Angeles/Oxnard CA
1037 AM PDT Sun Mar 29 2026

UPDATED AVIATION SECTION

.SYNOPSIS...29/946 AM.

Temperatures will remain above normal through Monday, especially
inland of the beaches, warmest today. Dense fog may will affect
coastal areas as late as Monday. Much cooler conditions Tuesday
through Thursday with gusty onshore winds and chances of light
rain. Weak to moderate offshore winds with warming drying to
follow Friday and Saturday.

&&

.SHORT TERM (TDY-TUE)...29/945 AM.

***UPDATE***

Patchy dense fog has mostly cleared out, except for a few areas
along the Central Coast. Today is again on track to be warm across
inland of the beaches and marine layer stratus will likely return
to the coasts this evening.

***From Previous Discussion***

High pressure aloft will continue to dominate to region, leading
to June-like conditions. High temperatures in the 80s to lower 90s
will be common inland of the beaches on Sunday, which is 10 to 20
degrees above normal for this time of the year, then drop 5 to 10
degrees on Monday. We had a few records fall on Saturday (Paso
Robles, Palmdale, and Lancaster) and records may fall again on
Sunday (highest chances in those same 3 sites), but temperatures
will not be extreme enough to need any Heat Advisories.

Low clouds and fog will continue to moderate coastal areas, with
June Gloom conditions going nowhere through Monday. The typical
parameters we use to predict trends in the marine layer (like
onshore pressure gradients and 500 millibar heights) all point to
some deepening going forward and thus less dense fog. Cloud
heights however are already very low which usually points to dense
fog by the morning hours. All this adds up to low confidence on
how low the visibilities will go and how the low clouds and fog
will behave.

High pressure aloft finally breaks down Tuesday as a deep and
cold low starts pushing into the Pacific Northwest. This will
drop temperatures further with highs in the low to mid 70s common,
which is more typical for the end of March. High clouds will start
to blanket the sky as a weak cold front associated with the low
approaches the area.

.LONG TERM (WED-SAT)...28/939 PM.

The low over the Pacific Northwest will push into Montana by late
Thursday. More of the latest projections show the low dipping a
little further to the south along the way, which if that happens
will keep that cold front marching down the west coast alive for
a little longer. While rain is still not certain for southwest
California, the chances perked up a few percentage points from
yesterday. As it stands, there is a 30 to 50 percent chance for
some rain in the Tuesday Night through Thursday time period, but
still very unsure which 6 hour period in that range will see rain
if we get it. That is why the daily PoPs are generally in the 10
to 30 percent range. If it does rain, very confident that amounts
will be light with minimal impacts.

The winds will be the most significant piece to this system for
our area. Gusty west to northwest winds are certain Wednesday and
Thursday over much of the area, especially near the coast and
over the mountains and deserts. As the parent low moves further
to the east, cold air and surface high pressure will settle in
over Idaho by Friday. This will drive the typical post-storm
system wind reversal going from onshore to offshore. Weak to
moderate offshore winds are looking more and more likely Friday
and Saturday. High pressure aloft builds in at the same time,
which will all add up to warming and drying once again heading
into the following week.

&&

.AVIATION...29/1736Z.

At 1653Z over KLAX, the marine layer was 400 ft deep. The top of
the inversion was at 2300 feet with a temperature of 23 C.

High confidence in VFR TAFs for KPRB, KPMD, KWJF, KBUR, and KVNY.

Moderate confidence in remaining TAFs. Expecting mainly V/LIFR
conditions tonight into tomorrow morning for coastal sites.
Timing of CIG/VSBY restrictions may be off +/- 2 hours.

KLAX...Moderate confidence in TAF. Arrival and clearing times of
CIGs may be off +/- 2 hours. Generally expecting 003-006 with
vsbys 2-5SM. No significant east wind component expected.

KBUR...High confidence in VFR TAF.

&&

.MARINE...29/732 AM.

High confidence in winds and seas staying under Small Craft
Advisory (SCA) levels through at least Monday, except for a 30-50%
chance of low-end SCA winds beyond 20 NM from the Central Coast.

Moderate risk of dense fog with visibility under one nautical
mile will continue through Monday evening (focused evening to
morning hours)

There is a growing risk for widespread strong SCA or low-end Gale
Force winds over most coastal waters (including nearshore and the
Santa Barbara Channel) late Thursday through Friday.

&&

.LOX WATCHES/WARNINGS/ADVISORIES...
CA...Dense Fog Advisory now in effect until 11 AM PDT this morning
      for zones 341-346-347. (See LAXNPWLOX).
PZ...NONE.

&&

$$

PUBLIC...RK/RM/RS
AVIATION...Black
MARINE...Black
SYNOPSIS...RK/RS

weather.gov/losangeles

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

NWS Los Angeles (LOX) Office