Lynwood, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

683
FXUS66 KLOX 130617
AFDLOX

Area Forecast Discussion
National Weather Service Los Angeles/Oxnard CA
1117 PM PDT Tue Aug 12 2025

.SYNOPSIS...12/714 AM.

Night through morning low clouds and fog will continue along the
coast and into some coastal valleys through the period and will
prevent those areas form heating up. A cooling trend will begin
Wednesday as an upper-level trough influences the West Coast.

&&

.SHORT TERM (TDY-THU)...12/851 PM.

***UPDATE***

High pressure lead to warm to hot temperatures through much of the
region today. Interior areas reached the upper 90s to mid 100s,
and many valleys were in the 80s and 90s. Onshore winds and
frequent clouds kept the Central Coast in the 60s. An upper level
trough will lead to a cooling trend over the next few days, with a
deepening marine layer. Gusty sundowner winds for western portions
of the Santa Barbara south coast are expected tonight, Wednesday
night and Thursday night. A wind advisory may be needed tonight,
and will be likely for Wednesday night with gusts up to 50-55 mph.
Other windy areas will be the Antelope Valley and I-5 corridor,
and Wednesday night again looks like the peak. The current
forecast looks on track.

***From Previous Discussion***

Synoptically, the area is under a broad area of higher heights
with 594 dam over most of SoCal. A trough will dip down along the
US west coast Wednesday through the weekend before the ridge
pushes back in from the southeast.

There are no clouds except for along the SLO and Ventura Co
coasts today. Skies are smokey in southern SLO Co and central SBA
Co. Max temps are the most impactful weather element today as the
upper high sitting atop of the state is keeping a heat dome over
the area. Downsloping, warm winds across the Antelope Vly have
temps over 100 degrees there already. An extreme heat warning is
in effect for these areas where max temps will range from 105 to
108 degrees. Most of the rest of the interior sections including
the lower mtn elevations are under a heat advisory for max temps
from 100 to 104 degrees. Please see the product LAXNPWLOX for all
of the heat related details. Still expecting another Sundowner
tonight across the western portion of the SBA south coast to come
in just under advisory levels except for brief advisory level
conditions in passes.STDAFDLOX

On Wednesday, the ridge will begin to break down with hgts
falling to 592 dam. The coastal eddy is expected to spin up and
this will increase amount of night through morning low clouds and
fog. Max temps will cool 2 to 4 (locally 6) degrees. While there will
be plenty of 100+ degree heat in the interior, the cooling should
be just enough to prevent the extension of the heat products.
There will be a stronger Sundowner Wednesday evening and a wind
advisory is likely for the western portion of the SBA south coast.

On Thursday the ridge moves further east and hgts fall further to
588 dam. The eddy will persist and most areas will see an
additional 2 to 4 degrees of cooling (4 to 6 degrees across the
LA mtns and Antelope Vly). Most of the csts/vlys will see max
temps in the 70s/80s a with only 90s across the interior.

A little more cooling on Friday as the trough will persist over
the area.

.LONG TERM (FRI-MON)...12/1159 AM.

A fairly static pattern will dominate the long term. Long wave
troffing will be over the state on Sat for a final day of cooling.
Saturday`s max temps range from near 70 across the near shore
area with 70s across the rest of the coastal areas. The vlys will
end up only in the 80s. These max temps are mostly 5 to 10 degrees
below normal. On Sunday and Monday the trof will move to the west
and set up over east PAC. Hgts will be near 588 dam through the
period. Somewhat atypical (for August) onshore flow will continue
through the period. Look for strong onshore flow to the north and
east in the afternoon becoming weak to mdt due to the diurnal
pressure curve in the early morning.

A persistent night through morning low cloud pattern will
continue along the coasts. There will only be limited valley
penetration (The Santa Ynez Vly will be the notable exception) as
the hgts will likely keep the marine layer under 1000 ft.

The strong onshore push to the east will generate gusty afternoon
winds across the some mtns and the western Antelope Vly. These
winds will create locally elevated fire wx conditions.

&&

.AVIATION...13/0615Z.

At 0505Z at KLAX, the marine layer was 900 ft deep. The top of
the inversion was at 4100 ft with a temperature of 28 C.

High confidence in TAFs for KPMD & KWJF.

Low confidence in TAFs for KPRB and KSBA with a 40 percent chc of
LIFR cigs 11Z-16Z (KPRB) 19Z (KSBA).

Moderate confidence for the remainder of the TAFs. Timing of Cigs
arrival and departure may be off by +/- 2 hours. There is a 30
percent chc of cigs rising on flight cat overnight.

Vis reduction due to FU from Gifford Fire is possible at times
for KSBP, KSMX, KSBA, & KPRB.

KLAX...Moderate confidence in 00Z TAF. There is a 30 percent chc
of OVC012 conds 11Z-17Z. There is a 20 percent chc that VFR conds
will not arrive until 21Z. Good confidence that low clouds will
return 03Z-05Z. Good confidence in any east wind component
remaining below 6 kts.

KBUR...Moderate confidence in TAF. There is a 25 percent chc of no
cigs. There is a 30 percent chc of VFR conds by 18Z. Cigs could
arrive as late as 11Z.

&&

.MARINE...12/723 PM.

High confidence in seasonal NW winds across the Outer Waters and
Inner Waters along the Central Coast, with 40-70% chance of
reaching Small Craft Advisory (SCA) in the afternoon through late
night hours each day through the week. Highest confidence in the
southern Outer Waters, especially Wednesday and beyond. There is a
20-30% chance of local GALE Force wind gusts around Pt Conception
to San Nicolas Island each afternoon and evening through
Thursday. Seas may approach 10 feet across western portions of
PZZ670 on Friday.

For the Inner Waters south of Pt Conception, moderate confidence
in SCA level wind gusts across the western portion of the Santa
Barbara Channel each afternoon/eve through the week. There is a
50-60% chance SCA level winds will reach eastern portions on
Wednesday and Thursday. Otherwise and elsewhere, conditions will
remain below SCA levels through the week.

In addition, night to morning dense fog may continue at times
into Thursday.

&&

.LOX WATCHES/WARNINGS/ADVISORIES...
CA...Beach Hazards Statement in effect through Wednesday evening
      for zones 354-362-366. (See LAXCFWLOX).
PZ...Small Craft Advisory in effect from 3 PM to 9 PM PDT
      Wednesday for zone 645. (See LAXMWWLOX).
     Small Craft Advisory in effect from 3 PM Wednesday to 3 AM
      PDT Thursday for zone 650. (See LAXMWWLOX).
     Small Craft Advisory in effect until 3 AM PDT Wednesday for
      zone 670. (See LAXMWWLOX).
     Small Craft Advisory in effect until 3 AM PDT Friday for
      zones 673-676. (See LAXMWWLOX).

&&

$$

PUBLIC...Phillips/jld
AVIATION...Rorke
MARINE...Lewis/Black
SYNOPSIS...jld

weather.gov/losangeles

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