134
FXUS66 KLOX 042154
AFDLOX

Area Forecast Discussion
National Weather Service Los Angeles/Oxnard CA
154 PM PST Thu Dec 4 2025

.SYNOPSIS...04/148 PM.

Breezy Santa Ana Winds will continue to taper off through this
evening, with sub advisory northerly winds continuing into Friday
morning across mountain areas. Freezing conditions will occur
across some interior areas Friday morning. A significant warming
trend will begin this weekend with temperatures well above normal
through next Thursday, peaking next Tuesday and Wednesday.

&&

.SHORT TERM (TDY-SUN)...04/153 PM.

As this round of Santa Ana Winds tapers off, a fairly quiet
period will continue into the weekend. Another round of dense fog
is forecast for the southern Salinas Valley for Friday morning,
however confidence is low and there is a moderate chance the fog
does not develop. Some sub-advisory northerly to northeasterly
winds will develop overnight across the Western San Gabriel, Santa
Susana, and Santa Monica mountains tonight. Winds will generally
be under 35 mph, but localized gusts to 45 mph are possible for
windiest areas. North winds lower than 25 mph may surface between
Malibu and western Santa Monica at times tonight then transition
to more of a northeast direction in the early morning hours
Friday.

Another chilly night is on tap. A couple degrees of warming will
occur across most interior portions of Southwest California as
higher pressure builds in while offshore flow weakens. On the same
note coasts and coastal valleys, especially south of Point
Conception, will cool a couple degrees as the aforementioned
weakening offshore winds has less of downslope warming affect on
these areas. This will likely be the last night that Frost/Freeze
products will be needed for the forecast period. The Freeze Watch
for the Antelope Valley, southern Salinas Valley, and Interior San
Luis Obispo County valleys has been converted to a Freeze
Warning. The Freeze Warning is somewhat marginal for the southern
Salinas Valley, with temperatures likely in the 30-35 degree
range. Higher confidence in widespread freezing temperatures
across the Antelope Valley and interior SLO County valleys tonight
with lows in the 25-32 degree range common.

High temperatures will be anything but remarkable into Saturday,
with some minor fluctuations day to day. Weaker offshore flow and
eventually weak onshore flow Friday and Saturday afternoon will
lead to a few degrees of cooling at the coasts through. Highs
across coastal valleys will yo-yo a degree or two here and there
through Saturday, depending on how far inland the marine
influences of the onshore makes it. Interior portions including
the Antelope Valley will see the largest increase in temps, where
an increase up to 10 degrees over the next couple of days will be
common.

A significant warming trend will begin Sunday as a very powerful
(for this time of year) ridge overhead builds across the West
Coast, sending most of the coastal valleys into the 70s, while
the coasts and interior valleys will top out in the mid to high
60s.

.LONG TERM (MON-THU)...04/153 PM.

Focus will shift to high temperatures next week as Monday through
Thursday are looking very warm for this time of year. The upper
level ridge will be fully parked along the west coast, with the
highest 500 mb heights just off of the Central California coast.
Over Southwest California, 500 mb heights will likely reach the
95th-97th percentile during this period. In addition to the
synoptic pattern favoring a warm and dry spell, offshore winds
will increase from the east and particularly the north Monday and
Tuesday, with northerly flow continuing into Thursday. As of right
now, the most likely outcome would be weak to occasionally
moderate north-northeast winds.

Temperatures will be 10 to 15 and locally 20 degrees above normal
through Thursday except for 5 to 10 degrees above normal near the
coasts. Widespread upper 70s to at least low 80s will be common
across coastal valleys, while coasts will likely top out in the
low to mid 70s. Mid 80`s cannot be ruled out for warmest valley
locations. There is considerable agreement amongst ensembles
that the ridge will persist through the work week, but begin to
break down into more zonal flow over the weekend. It might be a
good idea to keep those winter coats in the closet next week.

&&

.AVIATION...04/1827Z.

At 1801Z at KLAX, there was no marine layer or inversion.

High confidence in the current forecast, except low-to-moderate
confidence for KPRB. There is a 40% chance that conditions will
remain MVFR or VFR tonight at KPRB.

Periods of moderate low- level wind shear are possible through
20Z.

KLAX...High confidence in TAF. There is a 20% chance of east
wind component between 6-8 kt from 05Z-14Z Fri.

KBUR...High confidence in TAF.

&&

.MARINE...04/118 PM.

Across the Outer Waters, Small Craft Advisory (SCA) level winds
are likely from Friday afternoon through late Saturday,
especially north of the Channel Islands. There is a 50% chance
that SCA winds may persist through Sunday and Monday.

For the Inner Waters, there is a 30 percent chance of SCA winds
briefly returning tonight through Friday morning for Rincon Point
to Santa Monica and into the San Pedro Channel. Nearshore north of
Point Sal, there is a 20-40% chance of SCA winds during the
afternoons/evenings Friday through Monday. Otherwise, winds and
seas will likely remain below SCA levels through the weekend.

&&

.LOX WATCHES/WARNINGS/ADVISORIES...
CA...Beach Hazards Statement in effect through Saturday morning
      for zones 87-349-350-362-366. (See LAXCFWLOX).
     Wind Advisory remains in effect until 3 PM PST this afternoon
      for zones 88-354-355-358-362-369>371-374>376-378>380. (See LAXNPWLOX).
     Freeze Warning in effect from 2 AM to 8 AM PST Friday for
      zones 343-344-383. (See LAXNPWLOX).
     Beach Hazards Statement in effect through Friday morning for
      zone 354. (See LAXCFWLOX).
PZ...NONE.

&&

$$

PUBLIC...Lewis
AVIATION...Schoenfeld
MARINE...Schoenfeld
SYNOPSIS...Lewis

weather.gov/losangeles

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