305
FXUS66 KLOX 090959
AFDLOX

Area Forecast Discussion
National Weather Service Los Angeles/Oxnard CA
259 AM PDT Sat May 9 2026

.SYNOPSIS...09/1226 AM.

A warming trend will continue into early next week. Temperatures
will warm to the 80s and 90s over the weekend through Tuesday.
100 degree readings may occur locally in the warmest valleys on
Sunday and Monday. Coastal low clouds will develop each night
through the weekend. Cooling will begin on Tuesday.

&&

.SHORT TERM (TDY-MON)...09/1225 AM.

Weather a little more like August rather than May on tap for the
short term. At the upper levels an upper high will move into the
area from the west today, pass through the state on Sunday and
will move into AZ on Mon. Hgts will raise from 583 to 584 dam
today, but will increase further to 586 dam on Sunday. Even higher
588 dam hgts are forecast for Monday. Fortunately for the coastal
community the offshore flow that was forecast last week did not
come to fruition and there will be onshore flow both to the east
and north through the period. This will set up the classic August
pattern of warm but not hot across the coasts but quite hot in the
vlys and inland away from the marine layer.

Today look for highs at the beaches to be in the lower 70s with
mid 70s to mid 80s across the rest of the coastal area. The vlys
will warm into the mid 80s to lower 90s while the lower mtn
elevations will peak in the lower to mid 90s. Temps will warm 1 to
2 degrees further across the csts/vlys on Sunday with 2 to 4
degrees further inland. Another 1 to 3 degrees of warming is on
tap for Monday with triple digit heat likely for the Antelope Vly
and a 30 percent chc of a 100 degree reading at Woodland Hill and
other vly hot spots. Saturday`s max temps will be 6 to 12 degrees
over normal with Monday`s readings coming in 10 to 20 degrees
above normal. While very warm, these temps are coming in just
under heat advisory criteria, but if temps end up a little higher
than fcst advisories may be needed on Sunday and esp Monday.

A strong marine inversion coupled with a weak eddy will bring
night through morning low clouds and fog to the area. The low
clouds will be most extensive tonight and will shrink both Sunday
and Monday mornings as the hgts increase and the marine layer is
smooshed down. There will be an increased chc of dense fog Sunday
and esp Monday mornings.

.LONG TERM (TUE-FRI)...09/248 AM.

The upper high will pull further to the east on Tuesday and hgts
will fall through the day. There will be a big increase in the
onshore flow as well (~8 mb to the east and ~6 mb to the north).
Look for plenty of morning low clouds pushing into the vlys with
slow clearing. There may be some advisory level winds in the
Antelope Vly as well. Max temps will plummet 5 to 10 locally 15
degrees. Look for 70s across the coasts and lower to mid 80s in
the vlys.

Not the best mdl agreement for the Wed to Fri period as there is
confusion on how to handle an upper low that will traverse the
northern portion of the state sometime during the period. The
forecast, however, will likely not vary too much with any of the
solutions. There will likely be plenty of night through morning
low clouds and fog. Cool both Wed and Thu and then a tad warmer
Friday as onshore flow relaxes a little. Thursday will be the
coolest day of the next 7 with max temps right near normal.

&&

.AVIATION...09/0957Z.

At 0835Z at KLAX, the marine layer was 1400 ft deep. The top of
the inversion was at 3500 ft with a temperature of 20 C.

High confidence in VFR TAFs for KPMD & KWJF.

Moderate confidence in remaining TAFs. Timing of CIG/VSBY
restrictions may be off +/- 2 hours and cig hgt by +/- 200 ft.

KLAX...Moderate confidence in TAF. Cigs may vary between
OVC008-011. SCT conds may be as late as 20Z. Good confidence that
any east wind component will be AOB 6kt.

KBUR...Moderate confidence in TAF. Low clouds may be as low as
OVC003. Arrival time may be as early as 10Z. VFR transitions may
be as late as 17Z.

&&

.MARINE...09/258 AM.

SCA level NW winds are expected to strengthen through this
afternoon/evening for the outer waters. Winds will likely reach
GALE Force locally across the far northern waters this evening.
There is a 40-60% chance of GALES this afternoon and evening over
the northern two zones, near and NW of Point Conception. For the
southern outer zone PZZ676, SCA winds are likely through early
Sunday morning.

For the nearshore waters, SCA level winds are likely during the
afternoon and evening hours through Sunday, especially along the
Central Coast and to a lesser extent near the Channel islands.

Short period seas will build during this timeframe especially
across the outer waters - peaking 10 to 13 ft through tonight.

Winds and seas should diminish throughout the day on Sunday. By
Monday, conditions should be much calmer and likely below SCA
levels.

&&

.LOX WATCHES/WARNINGS/ADVISORIES...
CA...NONE.
PZ...Small Craft Advisory in effect until 3 AM PDT early this
      morning for zone 645. (See LAXMWWLOX).
     Small Craft Advisory in effect from 2 PM this afternoon to 3
      AM PDT Sunday for zone 645. (See LAXMWWLOX).
     Small Craft Advisory in effect until 2 PM PDT this afternoon
      for zones 670-673. (See LAXMWWLOX).
     Gale Warning in effect from 2 PM this afternoon to 9 PM PDT
      this evening for zones 670-673. (See LAXMWWLOX).
     Small Craft Advisory in effect until 3 AM PDT Sunday for zone
      676. (See LAXMWWLOX).

&&

$$

PUBLIC...Rorke
AVIATION...Rorke
MARINE...Ciliberti/DB
SYNOPSIS...Phillips/MW

weather.gov/losangeles

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

NWS Los Angeles (LOX) Office