FXUS66 KLOX 201126
AFDLOX

Area Forecast Discussion...UPDATED
National Weather Service Los Angeles/Oxnard CA 
426 AM PDT Wed May 20 2026

.SYNOPSIS...20/1210 AM.

Light offshore flow will continue this morning and will bring one
more sunny and warm day. Beginning Thursday there will be a 
return to cooler May Grey conditions which will last through the 
weekend.

&&

.SHORT TERM (TDY-FRI)...20/229 AM.

Not much in the way of weather for the short term (or the long
term for that matter).

At the upper levels the base of a weak pos tilt trof will be over
Srn CA with hgts around 576 dam. At the sfc there will be weak
offshore flow this morning but then there will be increasing
onshore flow through Friday both to the east and north. By Friday
the onshore push will be moderate to strong.

Skies will be clear today. Some low clouds will develop tonight
but will likely only affect the Central Coast and the LA county
coast. By Friday most of the csts and some of the lower vlys will
wake up to low clouds. The SBA south coast will have a local
offshore push and this should keep that area stratus free. Aside
from the stratus and some high clouds Thursday night skies will be
mostly clear.

Today will be the warmest day with most areas gaining 1 or 2
degrees on ydy's very warm readings. Most csts will be in the
upper 70s to mid 80s with the furthest inland coastal areas seeing
upper 80s. The vlys will sizzle with reading a couple degrees
either side of 90. These max temps are about 10 degrees over
normal. The switch to onshore flow will bring 4 to 8 degrees of
cooling to the area both Thursday and Friday. This cooling will
bring below normal temps to the near shore areas and near normal
temps over the rest of the csts and vlys.

There will be weak offshore winds this morning but the rest of the
period will have standard afternoon sea breezes. One exception 
to this may be southwest Santa Barbara County where a 2-4mb 
offshore gradient during the overnight hours will likely create 
nightly Sundowners with winds gusting between 25 and 40 mph at 
times, particularly tonight and Thursday night.

.LONG TERM (SAT-TUE)...20/229 AM.

Very May like weather will be the norm for the 4 day xtnd period.
Saggy-baggy troffing will cover most of the state through the
period. At the sfc there will be moderate to strong onshore flow
to the east and weak to moderate onshore flow to the north. There
will be a good dose of night through morning low clouds across
most of the coast and many vly areas every day. Due to the 
strength of the onshore flow some beaches may not clear at all.

The strong onshore flow in the afternoon will generate stronger
than normal sea breezes as well as gusty west winds in the
Antelope Vly. Additionally the western portion of the SBA south
coast will see varying degrees of north winds each evening.

Most areas will cool 1 or 2 degrees each day except perhaps 2 to 
4 degrees on Tuesday. Most csts will see max temps in the mid 60s
to mid 70s each day with upper 70s to lower 80s in the vlys. Max
temps will mostly end up a few degrees below normal across the
csts/vlys and the mtns and far interior will end up a few degrees
over normal.

&&

.AVIATION...20/1125Z.

At 0835Z at KLAX, there was no marine layer. There was a sfc 
based inversion with a top of 900 ft with a temperature of 26 C.

High confidence in CAVU TAFs. There is a 20% chance of 5SM FU at 
KVNY.

KLAX...High confidence in CAVU TAF. Good confidence that any east
wind component will be AOB 5kt.

KBUR...High confidence in CAVU TAF. No wind issues expected.

&&

.MARINE...20/219 AM.

High confidence in current forecast. Through this weekend, winds 
and seas are expected to remain below Small Craft Advisory (SCA) 
levels, with a few exceptions of local SCA level gusts during the
afternoons and evenings. Across the outer waters south of Port 
San Luis, local gusts to SCA levels will be possible each 
afternoon/evening through Friday, and again on Sunday. For the 
inner waters along the Central Coast south of Port San Luis, off 
the coast of Point Dume, across the San Pedro Channel, and in the 
Santa Barbara Channel, local gusts to SCA levels will be possible 
this afternoon through early evening.

&&

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

&&

$$

PUBLIC...Rorke
AVIATION...Rorke
MARINE...Lund
SYNOPSIS...MW

weather.gov/losangeles

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