Palmdale, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

586
FXUS66 KLOX 142102
AFDLOX

Area Forecast Discussion
National Weather Service Los Angeles/Oxnard CA
202 PM PDT Thu Aug 14 2025

.SYNOPSIS...14/117 PM.

The cooling trend will continue through Saturday and by the weekend
temperatures will be 5 to 10 degrees below normal. Night through
morning low clouds and fog will continue for coast and coastal
valleys through the period. A warming trend will begin Sunday.

&&

.SHORT TERM (TDY-SUN)...14/152 PM.

Daytime highs continue to cool each day as an unseasonably deep
trough develops over the PacNW, creating a deeper marine layer
locally and increasing onshore flow. The cooling trend is
expected to continue through Saturday before we turn the corner to
warmer days starting Sunday. In the meantime, we`ll see a steady
dose of night and morning stratus that pushes well inland and
slowly clears through the day, though like today possibly not
clearing some beaches. Temperatures have already fallen below
normal by 4-8 degrees in most areas and expecting that to reach
6-12 degrees below normal by Saturday.

One last night of borderline advisory level Sundowner winds across
southwest SB County before pressure falls to the north associated
with the developing West coast trough reverses the flow to the
south.

Although a warming trend is expected to begin Sunday, in reality
it will be barely noticeable and would not be surprised if there
is little change or even slight cooling Sunday as the trough in
the PacNW is still in place and bringing in waves of moisture into
Washington.

.LONG TERM (MON-THU)...14/202 PM.

Early next week the trough to the north will weaken and allow
high pressure from the 4 corners region to expand west into
California. Highs are expected to increase 2-4 degrees in most
areas away from the beaches. However, it`s going to take until at
least Tuesday or Wednesday before highs get back to normal, with
Thursday being the warmest of the week. Triple digit temperatures
are expected again across the western San Fernando Valley, Santa
Clarita Valley, and the deserts. Overall highs expected to be 4-8
degrees below normal by mid week.

There is also a small chance of some monsoon moisture returning by
middle to end of next week. Ensembles are averaging around a
little over an inch of PW so there is a non-zero chance of some
convection, mainly far eastern areas like the San Gabriel
Mountains.

&&

.AVIATION...14/1744Z.

At 1716Z at KLAX, the marine layer was 2300 ft deep. The top of
the inversion was at 4700 ft with a temperature of 25 Celsius.

High confidence in VFR TAFs for KPMD and KWJF with seasonally
gusty SW to W winds.

Moderate confidence in all other TAFs. Lower confidence in
clearing of cigs at KOXR, KSMO, KLAX, and KLGB. Conds may vary
between SCT and BKN today. Moderate confidence in return timing
of cigs (plus or minus 2 hours) and minimum flight cat. There is a
chance for flight cats to briefly be one cat lower.

KLAX...Moderate confidence in TAF. Cigs may bounce between SCT and
BKN 012-020 through the afternoon, and there is a 15% chance for
no clearing. High confidence in conditions remaining MVFR or
higher through the period. Return of cigs may be as early as 22Z.
Southeast winds will likely form, but high confidence in any east
wind component staying under 8 knots.

KBUR...Moderate confidence in TAF. Ceilings will return tonight,
likely staying above OVC010, with a likely return window of
04-08Z. There is a 20% chance for brief 008-009 cigs when clouds
are present.

&&

.MARINE...14/127 PM.

High confidence in seasonally gusty NW winds across the waters
beyond 20 miles from shore between the Central Coast to San
Nicolas Island, with Small Craft Advisory (SCA) conditions common
each day into next week, except for some morning lulls starting
Friday and Saturday. Brief and very localized gale force gusts to
35 knots from Point Conception to San Nicolas Island may occur
each evening, with tonight looking the most likely. The nearshore
Central Coast waters will flirt with SCA winds each afternoon and
evening. The western Santa Barbara Channel will also see SCA
conditions each late afternoon and evening, but confidence in
winds becoming widespread enough to warrant an SCA is low, except
for moderate cofidence tonight, will continue with the SCA
tonight. All areas will see choppy seas from these winds in the
late afternoon through late night hours.

A long period south swell will continue to bring hazardous waves
nearshore and elevate currents near harbor entrances possibly
through tonight, but should improve Friday and Saturday.

&&

.LOX WATCHES/WARNINGS/ADVISORIES...
CA...Wind Advisory remains in effect until 5 AM PDT Friday for
      zones 349-351. (See LAXNPWLOX).
     Beach Hazards Statement in effect until 2 AM PDT Friday for
      zones 354-362-366. (See LAXCFWLOX).
PZ...Small Craft Advisory in effect until 9 PM PDT this evening
      for zone 645. (See LAXMWWLOX).
     Small Craft Advisory in effect from 6 PM this evening to 3 AM
      PDT Friday for zone 650. (See LAXMWWLOX).
     Small Craft Advisory in effect until 3 AM PDT Saturday for
      zone 670. (See LAXMWWLOX).
     Small Craft Advisory in effect until 6 AM PDT Friday for
      zones 673-676. (See LAXMWWLOX).

&&

$$

PUBLIC...MW
AVIATION...Lewis
MARINE...Kittell/Lewis
SYNOPSIS...MW

weather.gov/losangeles

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