Oxnard, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

500
FXUS66 KLOX 092121
AFDLOX

Area Forecast Discussion
National Weather Service Los Angeles/Oxnard CA
221 PM PDT Wed Apr 9 2025

.SYNOPSIS...09/132 PM.

A gradual warming trend will continue into Thursday or Friday as
high pressure aloft builds over the region. Mostly sunny skies
will continue except for patchy night through morning low clouds
and fog at the coast. Daytime high temperatures will be well above
normal temperatures away from the coast through Friday. Onshore
flow should return for the upcoming weekend and bring a cooling
trend into early next week.

&&

.SHORT TERM (TDY-SAT)...09/157 PM.

High pressure is building over the state with weakening onshore
flow. This will continue through Friday before we quickly
transition back to cooler weather and marine layer this weekend
and next week. In the meantime, temperatures today have risen at
least 3-6 degrees over yesterday, with even bigger increases
along the Central Coast where some areas are as much as 12 degrees
warmer than yesterday.

Additional warming is expected in all areas again Thursday with
highs likely getting into the low to mid 90s in the western San
Fernando Valley and mid to high 80s elsewhere in the valleys.
Meanwhile, there will still be a shallow marine inversion near
the coast moderating temperatures there and also generating some
areas of dense fog that could linger at the beaches even into the
afternoon.

Friday now looks very similar to Thursday, if not a degree or two
warmer in some inland areas. The ridge of high pressure will be
weakening through the day and shifting eastward ahead of the next
Pacific coast trough arrival. As a result, onshore flow will be
increasing through the afternoon so it may be quick warm up in the
morning and early afternoon before a resurgent sea breeze
develops in the afternoon and brings cooling inland earlier than
previous days.

Saturday is expected to be significantly cooler in all areas with
likely a deeper and more widespread marine layer. Increasing
onshore flow will start to bring some gusty winds to the interior
in the afternoon.

.LONG TERM (SUN-WED)...09/220 PM.

Next week looks quite cool across the area as at least two slow
moving upper lows pass through. These lows are both at least
semi-cut off from the main jet stream well to the north so timing
these will be difficult to impossible. But regardless of their
exact arrival time, the pattern itself will be a very cool one
with likely a deep marine layer at times, and possibly some night
and morning drizzle at times. High temperatures will be at least
4-8 degrees below normal through the period and possibly as much
as 8-12 degrees below normal on days when the upper lows are
passing through the area.

&&

.AVIATION...09/1737Z.

At 1649Z at KLAX, the marine layer was about 800 feet deep. The
top of the inversion was near 1300 ft with a temp of 19C.

Overall, moderate to low confidence in 18Z TAF Package. There is a
10-20% chance of cig arrival at KSBP from 10Z to 17Z Thu with
IFR/LIFR conds possible. For same timeframe at KSMX, there is a
30% chance cigs do NOT arrive, and a 20% chance of LIFR if cigs
arrive. There is a 30-40% chance of IFR or lower conds at KSMO
during aforementioned timeframe.

Timing of cig/vsby restrictions may be off +/- 2 hours, with
minimum flight cats off one or two.

KLAX...Low to moderate confidence in the 18Z TAF. IFR cigs 005-009
expected to arrive around 07Z (+/- 2 hours), then by around 11Z
chance of LIFR cigs 003-004 with vsbys ~1/2SM. VFR conds expected
to return around 16Z (+/- 1 hour). No significant east wind
component expected.

KBUR...High confidence in the 18Z TAF with VFR conds thru the pd.

&&

.MARINE...09/1145 AM.

In the outer waters, Small Craft Advisory (SCA) winds (21+ kt)
and/or seas (10+ ft) are expected to continue for much of the time
in the northern two zones (PZZ670/673) thru Sun evening. In the
southern zone (PZZ676), winds are expected to remain below SCA
levels thru Thu morning. Thereafter, SCA conds are expected to
persist for much of time from Thursday afternoon through at least
Sunday morning. There is a 20-40% chance of GALE force winds at
times Fri afternoon thru Sat eve. The best chances will be across
the waters around Pt. Conception and to the west of the Northern
Channel Islands (PZZ673/676).

In the nearshore waters N of Pt Conception, SCA winds are likely
(80% chance) during the afternoon/eve hours thru Sat. There is a
moderate to likely chance of SCA level seas Friday night into
early Sunday morning.

In the Santa Barbara Channel, SCA level winds are likely (80% chance)
across western portions during the afternoon/eve hours Fri thru
Sat. Conditions are expected remain below SCA criteria for the
remainder of the weekend.

In the southern inner waters, SCA conds are not expected thru Sun
night.

&&

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

&&

$$

PUBLIC...MW
AVIATION...Black
MARINE...Black
SYNOPSIS...MW/Hall

weather.gov/losangeles

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