553
FXUS66 KLOX 241945
AFDLOX

Area Forecast Discussion
National Weather Service Los Angeles/Oxnard CA
1245 PM PDT Wed Jun 24 2026

.SYNOPSIS...24/1241 PM.

A shallower marine layer is expected over the next few days. Warm
weather will peak on today and continue into Thursday. A cooling
trend with a more pervasive marine layer cloud pattern and below
normal temperatures is expected Friday into the weekend.

&&

.SHORT TERM (TDY-SAT)...24/1241 PM.

A 590 dm ridge is currently situated over Socal. This ridging is
expected to break down on Thursday and will be replaced with zonal
to cyclonic flow as another trough develops over PACNW and dives
into the Great Basin through the weekend.

Onshore flow will strengthen to the north through Thursday and
to the east through Saturday. This will result in gusty SW winds
across the interior - strongest across the Antelope Valley/ft
hills and portions of LA county mtns. Approaching advisory levels
Thursday into Friday, and even better chances into the weekend.
Advisory level Sundowner winds likely on Friday, and especially
on Saturday. Focused across western Santa Ynez range.

With increasing onshore flow, decreasing 500 mb heights, and
increasing potential for Catalina Eddy (throughout the week) this
will result in the continuation of marine layer stratus across the
coasts and valleys.

Temperatures are expected to be warmest today and a couple degrees
cooler tomorrow (still warm/hot). Then, a noticeable cooling trend
Friday into the weekend.

Important: Have adjusted the Heat advisory end time to 9 PM Wednesday
for zone 368 - Los Angeles Inland Coast including Downtown. All other
zones are still under a heat advisory through 9 PM Thursday. See NPWLOX
for more details.

.LONG TERM (SUN-WED)...24/1241 PM.

June Gloom will be back with a vengeance during the xtnd period.
By Sunday, an unseasonably cold upper low will be situated over
the Great Basin region. This main low will lift to the NE on
Monday. In Tandem, a shortwave will drop south on the backside
and will maintain troughing over the west coast. There is some
uncertainty in how far south the energy dives.

Chances for advisory level winds linger into Sunday across the
Antelope Valley/adjacent foothills and I-5 corridor. Lower
confidence beyond due to uncertainty in upper pattern and
sfc pressure gradients.

At least moderate onshore flow to the north and east is expected
to continue Monday through Wednesday. Look for plenty of night
through morning low clouds across the csts/vlys every day.
Clearing will be on the slow side and a few beaches will remain
cloudy in the afternoon. Portions of the SBA south coast may be
the exception as local north flow indicated by the KSBA-KSMX
gradients may keep the low clouds away or to a lesser extent.

Temperatures are likely to remain below normal through end of fcst
period. Max temps will mostly be in the 70s across the csts/vlys
(mid to upper 60s at the beaches) and only lower to mid 80s for
the inland areas. These max temps are 3 to 5 degrees cooler than
normal at the csts and 5 to 10 locally 12 below normal across the
vlys and inland areas.

&&

.AVIATION...24/1835Z.

At 1720Z at KLAX, the marine layer was 1000 feet deep. The top of
the inversion was 3400 feet with a temperature of 22 C.

Low to moderate confidence in the KPRB TAF with the National Blend
only indicating a 30 to 40 percent chance of MVFR CIGs.

Moderate confidence in the remainder of the TAFs. The National
Blend indicates a 70+ percent chance of LIFR CIGs at KSBP, KSMX,
KSBA, KOXR, with a 50 to 60 percent chance at KCMA and KSMO.

KLAX...Low to moderate confidence in TAF. Opted for persistence
forecast with LIFR CIGs again beginning 08Z, although the National
Blend only features a 45 percent chance of sub-1K CIGs early
Thursday morning with high confidence in VFR conditions by 16Z.

KBUR...Moderate confidence in TAF. Less than 30 percent
probability of LIFR and a 60 percent chance of MVFR between 13z
and 17z.

&&

.MARINE...24/656 AM.

High confidence in winds and seas remaining below Small Craft
Advisory (SCA) levels through today. Local gusts could reach 21
kts near Point Conception and across the western Santa Barbara
Channel later this afternoon into the evening. Chances for SCA
criteria gusts increase Thursday evening across the northern
waters and will expand to the south Friday into the weekend.
SCA winds will be strongest on Saturday, and will reach into the
nearshore waters along the Central Coast and Santa Barbara Channel
at times. Seas will near 10 ft Saturday evening through Monday
morning. Thereafter, conditions look to quiet down a bit through
mid next week.

&&

.LOX WATCHES/WARNINGS/ADVISORIES...
CA...Heat Advisory remains in effect until 9 PM PDT Thursday for
      zones 88-372-373-379-380-548. (See LAXNPWLOX).
     Heat Advisory now in effect until 9 PM PDT this evening for
      zone 368. (See LAXNPWLOX).
PZ...NONE.

&&

$$

PUBLIC...Black
AVIATION...Cropp
MARINE...Black
SYNOPSIS...Black

weather.gov/losangeles

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

NWS Los Angeles (LOX) Office