658
FXUS66 KLOX 070304
AFDLOX

Area Forecast Discussion...UPDATED
National Weather Service Los Angeles/Oxnard CA
804 PM PDT Mon Oct 6 2025

.SYNOPSIS...06/125 PM.

Slightly cooler than normal conditions will continue through
midweek due to an upper level low pressure over the West. Night
through morning low clouds and fog will continue through the week.
There is a slight chance of rain for late in the week for Los
Angeles County.

&&

.SHORT TERM (MON-THU)...06/804 PM.

***UPDATE***

It was a fairly quiet day across the Central Coast and SoCal as
high temperatures were all within a few degrees of yesterday`s
highs; a touch cooler at the coasts and slightly warmer across
the interior. Highs tomorrow will be more or less within a few
degrees of today`s highs with the interior increasing a few
degrees, while the coasts will remain fairly similar if not a
degree or two cooler as marine layer clouds look to linger a bit
longer into tomorrow morning compared to this morning. As far as
marine layer clouds go, they are already making headway across
most coastal areas. Expecting fairly widespread coverage across
all coastal areas, but the intrusion of clouds may not be quite
as deep into the valleys as last night as 500 mb heights increase
3 to 4 dam and smoosh the marine layer depth slightly.

East to northeast winds will persist across the northern
mountains of LA and Ventura counties, as well as the Antelope
Valley and foothills and possibly the Santa Clarita Valley from
Tuesday morning into the afternoon hours. Strongest gusts will be
in the 25-35 mph range, although the SCV will be a touch lighter.
The offshore flow will bring drier air to the aforementioned
locations.

Otherwise, a quiet couple of days with minimal day-to-day changes
are on deck, with a non-zero chance for subtropical moisture to
bring showers to southeastern LA County Thursday evening.

***From Previous Discussion***

No major weather issues through mid week as we continue to deal
with a weak upper low off the Central Coast. Temperatures will
remain slightly below normal and marine layer stratus will push
inland each night and clear out most areas by late morning or
early afternoon.

Things start to get significantly more complicated Thursday and
beyond as what`s left of Hurricane Priscilla advances northwest up
the Baja coast. There is a non-zero possibility that the storm`s
speed and trajectory will bring some showers to extreme southern
LA County as early as Thursday evening, though the vast majority
of the latest ensemble runs favor a Friday arrival or not at all.
If the leading edge of the outer rain bands are still south of the
area then Thursday will look and feel a lot like Wednesday.

.LONG TERM (FRI-MON)...06/214 PM.

There continues to be a lot of uncertainty in the forecast,
particularly Friday and Saturday as moisture from Priscilla moves
up the Baja Coast while an unseasonably cold upper moves into the
coastal waters west of the Bay Area. Chances for rain are still
in the forecast across LA County but there is still a
considerable range of possible outcomes from heavy rain,
lightning, and muggy/warm conditions to no rain, a deep marine
layer, and much cooler than normal temperatures. May not get much
clarity on this for a few more days. North and west of LA County
there is no rain expected from either system and temperatures will
be a little below normal.

Sunday and Monday are expected to be dry as both the upper low
over northern and central California and the remnants of Priscilla
move into the Great Basin and desert southwest respectively.
However, a trough will remain along the West coast potentially
well into next week, keeping high temperatures below normal. There
are also some signals for another potential weak storm system
moving into the area early next week but this long range upper
pattern has a very low predictability so still many possible
outcomes. Though the most likely one (>75%) is dry with near
to slightly below normal temperatures.

&&

.AVIATION...06/2337Z.

At 2237Z at KLAX, the marine layer was 1600 feet deep. The top of
the inversion was near 3200 feet with a temperature of 22 C.

High confidence in TAFs for KPRB, KPMD and KWJF.

Moderate confidence in remaining TAFs, as flight cat transition
times may be off by 2 hours tonight and 3 hours tomorrow. There
is a chance of LIFR conditions for KSBA (40%) and KOXR (30%) from
08Z-16Z. There is a 20% chance that no cigs develop at KBUR and
KVNY.

KLAX...Moderate confidence in TAF. Low clouds may arrive as early
as 03Z this evening, and as late as 09Z Tue. Transition to VFR may
be as early as 17Z. No significant east wind component expected.

KBUR...Moderate confidence in TAF, timing of the arrival of cigs
tonight may be as early as 05Z or as late as 10Z. Clearing times
may be off 2 hours. There is a 20% chance that no cigs form
through the period.

&&

.MARINE...06/755 PM.

Across the outer waters and nearshore along the Central Coast
conditions are likely to remain below Small Craft Advisory (SCA)
criteria through Thursday, with increasing winds to near or above
SCA levels possible by Friday. SCA winds are likely (50-60%) for
the weekend.

For the inner waters south of Point Conception, conditions should
generally remain below SCA criteria through mid week. There will
then be a 20-40% chance for SCA level winds Friday, with the best
chances in the Santa Barbara Channel. There is a 60% chance for
SCA winds for Saturday evening.

&&

.LOX WATCHES/WARNINGS/ADVISORIES...
CA...NONE.
PZ...NONE.

&&

$$

PUBLIC...MW/Lewis
AVIATION...Lewis
MARINE...Phillips/Schoenfeld/Ciliberti
SYNOPSIS...MW

weather.gov/losangeles

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