La Puente, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

129
FXUS66 KLOX 231105
AFDLOX

Area Forecast Discussion...UPDATED
National Weather Service Los Angeles/Oxnard CA
405 AM PDT Fri May 23 2025

.SYNOPSIS...23/222 AM.

Temperatures will fall each day through Saturday, with increasing
low clouds and fog. Sunday through mid next week, temperatures
will be slightly below normal for most areas and marine layer low
clouds and fog will continue.

&&

.SHORT TERM (TDY-SUN)...23/314 AM.

Currently a weak trough of low pressure continues to digs into
the region. Temperatures will cool each day through Saturday,
followed by a couple degrees of warming possible on Sunday away
from the coast. South of Point Conception, temperatures today are
likely to be slightly above normal for most population centers.
North of Point Conception, marine layer stratus and onshore flow
will keep most temperatures about 4 to 8 degrees below normal. By
Saturday, the entire region will see temperatures around 3 to 8
degrees below normal, with highs in the mid 60s to mid 70s common.

Overnight to morning low clouds and fog will trend upwards into
the weekend. As 500 mb heights decrease inline with the
approaching trough, the marine layer will deepen and extend
further inland. The latest satellite and sounding data shows a
marine layer depth of around 1700 feet, with clouds across Ventura
and Los Angeles Counties spreading northward. Some amount of
stratus and patchy fog is expected for all coasts and coastal
valleys by this morning, except for portion of the Santa Barbara
south coast, where winds may drive clouds away.

The northwesterly Sundowner Winds across the southwest portion of
Santa Barbara County have now fallen below advisory level,
although local gusts to 40 mph will continue around Gaviota. Winds
are expected to redevelop this evening into tonight across the
same location. A Wind Advisory has been issued, as gust of 30 to
50 mph are likely to be common.

.LONG TERM (MON-THU)...23/331 AM.

Calm weather is expected in the extended period, as weak trough
will knock 500 mb heights down again early next week. Overall
temperatures will either change very little each day or increase
very slightly. Highs will mostly be within 3 degrees of normal,
except for some areas of well below normal for the beaches along
the Central Coast. Persistent and strong onshore flow will keep
marine layer clouds and fog common during the overnight and
morning time periods. Thus, a typical May Gray pattern is likely
for the beaches, coastal plains, and some valleys.

There is the potential for a significant warming trend late next
week into early June, as some forecast models show a moderately
strong high pressure system building over the Arizona-Nevada
region.

&&

.AVIATION...23/1104Z.

At 0748Z at KLAX, the marine layer was 1100 feet deep. The top of
the inversion was around 3600 feet with a temperature of 20 C.

High confidence in TAFs for KPRB, KPMD, and KWJF.

Moderate confidence in remaining TAFs. There is a 10% chance for
VLIFR to LIFR conds developing at KSMX by 14Z this morning. There
is a 30% chance KSBA remains VFR through the period. Minimum
flight cats may be off by one cat, and clearing times may be off
+/- 2 hours. Return of cigs tonight may be off +/- 4 hours. MVFR
with local IFR conds are expected tonight as the Catalina Eddy
helps deepen the marine layer.

KLAX...Moderate confidence in TAF. There is a 10% chance for MVFR
cigs to prevail through the period. Otherwise, transition to VFR
may be off +/- 2 hours. Return of cigs tonight may be off +/- 4
hours. There is a 10% chance for OVC008-009 upon arrival tonight.
There is a 20% chance for an east wind component of 8 kts between
14Z and 17Z this morning, and a 40% chance late tonight after 10Z.

KBUR...Moderate confidence in TAF. Transition to VFR may be off
+/- 1 hour. Arrival of cigs tonight may be off +/- 4 hours. There
is 40% chance for cigs OVC005-009 when cigs arrive tonight.

&&

.MARINE...23/212 AM.

For the Outer Waters, high confidence in Small Craft Advisory
(SCA) level winds and seas (at times) through Memorial Day
weekend. GALE force wind gusts are expected to persist through
the overnight hours. On Friday, GALES are expected to become more
localized around Point Conception and the Northern Channel
Islands. There is also a 50% chance of GALE force gusts across NE
portions of PZZ670 this afternoon through this evening.
Thereafter, minimal chances for GALES, and seas are expected to
remain below SCA thresholds.

For the northern Inner Waters, SCA winds are expected to continue
into late tonight, with a 50% chance of GALE force gusts this
afternoon and evening. Over Memorial Day weekend, moderate
confidence in SCA winds each afternoon through evening.

For the Santa Barbara Channel, SCA winds winds will be more
widespread this afternoon through late tonight, reaching eastern
portions of the zone including the Ventura County coastline with a
10-20% chance of GALE force wind gusts in the western portion of
the Channel. There is a moderate chance for SCA level winds
across the western portion of the Channel each afternoon and
evening over the remainder of Memorial Day Weekend.

For the Inner Waters off the Los Angeles and Orange County coasts,
moderate confidence in conditions remaining below advisory levels
this weekend. However, there is a 20-40% chance for local gusts
up to 25 kt to occur each afternoon through evening today through
Monday near Malibu, through the San Pedro Channel, and in the far
western portion of the zone, with the highest chances today and
Sunday.

&&

.BEACHES...23/1206 AM.

A long period south-southwest swell will bring elevated surf
conditions up to 6 feet along with a high risk for hazardous rip
currents for some south facing beaches over Memorial Day weekend,
with Saturday through Monday being the peak. Considering the
expected high beach attendance for the holiday, ocean rescues may
be numerous. If you plan on swimming in the ocean, be sure to
swim near an occupied lifeguard tower.

&&

.LOX WATCHES/WARNINGS/ADVISORIES...
CA...Wind Advisory in effect from 6 PM this evening to 3 AM PDT
      Saturday for zones 349-351. (See LAXNPWLOX).
PZ...Small Craft Advisory in effect until 3 PM PDT this afternoon
      for zones 645-670. (See LAXMWWLOX).
     Gale Warning in effect from 3 PM this afternoon to 9 PM PDT
      this evening for zones 645-670. (See LAXMWWLOX).
     Small Craft Advisory in effect from 3 PM this afternoon to 3
      AM PDT Saturday for zone 650. (See LAXMWWLOX).
     Gale Warning in effect until 3 AM PDT Saturday for zones
      673-676. (See LAXMWWLOX).

&&

$$

PUBLIC...Schoenfeld
AVIATION...Lewis
MARINE...Lewis
BEACHES...Lewis
SYNOPSIS...Schoenfeld

weather.gov/losangeles

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