East Los Angeles, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

973
FXUS66 KLOX 171617
AFDLOX

Area Forecast Discussion
National Weather Service Los Angeles/Oxnard CA
917 AM PDT Thu Apr 17 2025

Updated Marine and Aviation sections

.SYNOPSIS...17/841 AM.

Skies will be partly to mostly cloudy through Friday with a chance
of light rain or drizzle. Temperatures will remain well below
normal. Warmer temperatures are expected Saturday through the
middle of next week but still 3 to 6 degrees below normal across
the coast and valleys.

&&

.SHORT TERM (TDY-SAT)...17/856 AM.

***UPDATE***

Our marine layer has transitioned to a 9000ft moist layer that
covers all but the highest mountain peaks, the Antelope Valley,
and extreme northern SLO County. So far just a few reports of
light rain in the Grapevine area between Sandberg and Castaic.
However, satellite imagery is showing some small pockets of very
minor convection across Orange County as well as an interesting
boundary 30-60 miles west of the Central Coast and moving towards
the southeast. Based on the current situation and the latest hi
res models chances for precipitation today are lower but not zero
with the best chances in the mountains. The boundary off the
Central Coast may be the best hope for any rain locally but that
likely won`t arrive until well into the afternoon. Otherwise, just
a cool and cloudy day for the most part but with increasing
clearing from the north through SLO and northern Santa Barbara
Counties.

***From Previous Discussion***

The upper low swinging out of Idaho is now forecast to swing
further to the east which will reduce the overnight rain threat
which will not be confined to LA county and eastern VTA county.

Rain chcs quickly diminish Friday morning with the only chc over
the eastern San Gabriels. Dry northerly flow will set up over the
areas and hgts will rise to 568 dam up from this afternoon`s 562
dam value. The clouds will diminish and skies should be mostly
sunny by afternoon. The rising hgts, weaker onshore flow and extra
sunshine will all mix together to bring a 2 to 4 locally 5 to 6
degree boost in temps everywhere except for the beaches. Despite
the warming most max temps will come in 5 to 10 degrees blo
normal.

Weak ridging and weak offshore flow arrive Saturday. Latest
guidance suggests that there will be some coastal marine layer
clouds, but would not be surprised if there were none as there
might not be enough time for the marine inversion to set up. 576
dam hgts plus the weak offshore flow and sunny skies will bring 2
to 4 degrees of warming across most of SLO/SBA counties and the
csts of LA/VTA county. The vlys and interior of LA/VTA county will
see 4 to 8 locally 10 degrees of warming. Max temps will trend to
normal.

.LONG TERM (SUN-WED)...17/302 AM.

Good agreement with the deterministic and ensemble mdls for the
extended fcst. A series of trofs will move through the PACNW and
will bring weak, but dry, cyclonic flow over the Srn CA. Onshore
flow will increase as well and the night through morning low
cloud pattern will return to the coasts and probably the lower
vlys. Skies otherwise will be mostly clear. Moderate to strong
onshore flow in the afternoon will bring gusty winds to the mtns
and Antelope vly. Temperatures will not change too much each day
with a few degrees of warming Sun and Mon followed by a few
degrees of cooling Tue/Wed. Monday will be the warmest day of the
next 7 with plenty of 70s across the csts and vlys except for 60s
at the beaches.

&&

.AVIATION...17/1616Z.

At 1600Z at KLAX, there was an 8000 ft deep moist layer.

Overall, high confidence in TAFs. For coastal/valley sites,
5000-7000 ft cigs are expected through the period with possible
brief periods of SCT conditions. There is a 20% chance for night
through morning MVFR cigs at PRB.

Gusty southwesterly winds will impact the mountains and deserts
with some LLWS/turbulence issues possible across the desert
foothills.

KLAX...High confidence in TAF. There is a 20-30% chance of brief
SCT conditions through the period. No significant easterly wind
component is expected.

KBUR...High confidence in TAF. There is a 10-20% chance of brief
periods of SCT conditions.

&&

.MARINE...17/912 AM.

For the Outer Waters, moderate to high confidence in current
forecast. Today through Friday, high confidence in winds and seas
remaining below Small Craft Advisory (SCA) levels. For Saturday
through Sunday, there is a 20-30% chance of SCA winds. For
Monday into Tuesday, there is a 30-50% chance of SCA level winds.

For the Inner Waters north of Point Sal, high confidence in
current forecast as winds and seas are expected to remain below
SCA levels through Tuesday.

For the Inner Waters south of Point Conception, high confidence in
current forecast as winds and seas are expected to remain below
SCA levels through Tuesday.

&&

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

&&

$$

PUBLIC...MW/Rorke
AVIATION...Cohen/RAT
MARINE...RAT/Cohen
SYNOPSIS...MW

weather.gov/losangeles

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