Burbank, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

662
FXUS66 KLOX 301811
AFDLOX

Area Forecast Discussion...UPDATED
National Weather Service Los Angeles/Oxnard CA
1111 AM PDT Wed Apr 30 2025

.SYNOPSIS...30/939 AM.

A deep marine layer and onshore flow will keep temperatures well
below normal through Thursday with some drizzle or light showers
at times across coast and valleys. There is a chance of
thunderstorms in the mountains on Thursday as an upper low moves
through the area. Some warming expected Friday before much cooler
temperatures return over the weekend with a chance of showers at
times.

&&

.SHORT TERM (TDY-FRI)...30/946 AM.

***UPDATE***

A 3000 foot marine layer and a 5mb (and still increasing) onshore
flow will keep temperatures on the cooler side today with possibly
very minimal clearing, even across the coastal valleys. So far no
reports of drizzle or light rain yet but wouldn`t be surprised if
some developed this morning or early afternoon, especially near
the foothills. The deepening marine layer will continue Thursday
as a weak upper low slides down the West Coast.

***From Previous Discussion***

Tonight and Thursday morning will be a repeat of this morning
with plenty of low clouds covering the csts, vlys and even the
some of the cstl slopes. Clearing, again, will be very slow and
likely non-existent at the beaches. The one big change will be the
approach of an upper low out of NV. This upper low is now fcst to
be a touch wetter and a touch more unstable than it was ydy and
now there is a 20 to 30 percent chc of a shower across the mtns of
LA and VTA counties as well as the eastern SBA county mtns, the
western Antelope Vly and foothills and the Cuyama Vly. Rainfall,
if any, will not exceed a quarter inch and likely much less than
that. In addition to the chc of showers cumulus build ups over the
peaks are likely. Max temps will not change much from todays
below normal values.

Friday will see some warming as a tiny ridge moves into the area.
Onshore flow relaxes as well which should allow for faster and
better clearing. Max temps will respond to the higher hgts and
greater sunshine by warming 2 to 4 degrees. Despite the warming
max temps across the csts/vlys will remain several degrees blo
normal.

.LONG TERM (SAT-TUE)...30/330 AM.

Mdls and ensembles are in good agreement for an unusual May
weekend weather event. A cold (~550 dam) upper low will sweep
into the state on Saturday and over Srn CA on Sunday. A wave of
PVA will go over the area and will bring a 20 to 30 percent chc
of showers to the mtns in the afternoon. There is not much
moisture to work with and any rainfall amounts will be light. In
addition to the persistant low clouds there will be partly to
mostly cloudy skies from mid and high clouds assoc with the upper
low. Strong ~8 mb onshore flow to the east will keep many beaches
swaddled in low clouds all day as well as bringing near advisory
wind gusts to the Central Coast, mtn tops and the wester Antelope
Vly as well as its foothills. Coastal temps will fall 2 to 4
degrees but the rest of the area will 4 to 8 locally up to 12
degrees of cooling. This cooling will bring max temps across the
csts down into the 60s with vlys falling into the mid 60s to
lower 70s.

The upper low will move over Srn Ca on Sunday. Hgts will fall to
~552 dam. The upper low will bring plenty of cold air aloft for
some decent instability but the system is pretty moisture starved
and there will only be a 20 to 30 percent chc of mtn showers and a
less than 10 percent chc of a TSTM. Skies will be partly to mostly
cloudy through the day. Max temps will be the main talking point
with 4 to 8 degrees of cooling across the csts and vlys and 8 to
15 degrees across the mtns and far interior. These cold
temperatures will allow snow to fall to as low as 5500 ft. It will
feel like a colder than normal January day with max temps coming
in a few degrees either side of 60 for the csts.

Enough ensmeble members swing a secondary impulse across the area
Monday as the main upper low exits the state. This is enough for a
slight chc of mtn shower, but again without much moisture to work
with the shower threat is very minimal. All the cold air should
have mixed out the marine inversion so there should be few if any
low clouds in the morning. Skies still partly cloudy from some
wrap around clouds. 2 to 5 degrees of warming across the csts and
vlys will not be enough to bring max temps out of the 60s.

The mdls and ensembles diverge on Tuesday. Whatever the outcome it
will be low impact dry day. There will either be slight warming
(EC) or substantial warming (GFS)

&&

.AVIATION...30/1810Z.

At 1716Z at KLAX, the marine layer was 2700 feet deep. The top of
the inversion was roughly 4200 feet with a temperature of 15 C.

High confidence in TAFs for KWJF and KPMD.

Moderate confidence in TAFs for remaining sites. Immediate coastal
sites will struggle to clear today, but there is a 20-40% chance
for brief clearing this afternoon, with highest chances at KSBP
and KSMX. There is a 10% chance KBUR/KVNY do not clear today.
Minimum flight cat may be off at one at any point, and flight cat
changes may be off +/- 3 hours.

KLAX...Moderate confidence in TAF. There is a 20% chance of
SCT015-025 conds 21Z-02Z. There is a 40% chance for brief cigs
OVC007-010 between 04Z and 12Z. No significant east wind component
expected.

KBUR...Moderate confidence in TAF. There is a 10% chance for no
clearing today. Arrival of cigs tonight could be off +/- 2 hours.
There is a 30% chance for cigs OVC003-005 and/or vsbys 1-3SM.

&&

.MARINE...30/826 AM.

In the outer waters, high confidence in winds and seas remaining
relatively benign through Friday. Small Craft Advisory (SCA)
winds and seas (with swells up to 15 ft) are likely (>80% chance)
Fri afternoon thru Sun night, with a 60% chance of GALE force
winds Sat afternoon/night. During this time, there is also a less
than 10% chance for Storm Force winds (48 kts).

In the inner waters north of Point Sal, SCA conditions are not
expected thru Fri morning. SCA winds and seas are likely (70%
chance) Fri through Sun, with highest chances in the
afternoon/night hours. There is a 50% chance GALES Sat
afternoon/night.

In the Santa Barbara Channel, SCA conds are not expected thru Fri
morning. SCA winds and seas are then likely (70% chance) Fri
afternoon through Sun night, with a 40% chance of GALES across
western sections Sat afternoon/eve.

In the southern inner waters, SCA conds are not expected thru
Sat morning, then are likely (70% chance) beginning in the the
afternoon Sat and continuing thru Sun night. There is a 40% chance
for GALES in the western portion of the zone Sat afternoon/night.

&&

.LOX WATCHES/WARNINGS/ADVISORIES...
CA...Beach Hazards Statement in effect until 9 PM PDT this evening
      for zones 362-366. (See LAXCFWLOX).
PZ...NONE.

&&

$$

PUBLIC...MW/Rorke
AVIATION...Lewis
MARINE...Lewis
SYNOPSIS...MW

weather.gov/losangeles

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