Otterbein, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

942
FXUS66 KLOX 190626
AFDLOX

Area Forecast Discussion...UPDATED
National Weather Service Los Angeles/Oxnard CA
1126 PM PDT Fri Apr 18 2025

.SYNOPSIS...18/754 PM.

Generally clearing skies and warming conditions over the weekend,
with weaker onshore winds. A slow cooling trend will likely
develop Tuesday through the remainder of next week with
increasing night and morning low clouds and fog.

&&

.SHORT TERM (FRI-MON)...18/754 PM.

***UPDATE***

A deep and cool moist layer remains over the region this evening.
Healthy onshore flow is keeping the clouds over most areas with no
obvious sign yet of clearing out. The low pressure system that
fueled the cloudy and cool close to the workweek is now centered
over north Arizona, and all projections show it sliding further to
the east tonight with high pressure aloft pushing into
California. This evolution is still favorable to drastically
weaken the onshore flow at the same time, likely resulting in a
brief burst (15-25 mph) of northeast winds over the mountains
Saturday morning. All of this adds up to the logical conclusion
of decreasing cloud overnight. The marine layer however often
defies logic, especially in a situation like this with rapid
synoptic changes. So if there was ever a textbook low confidence
forecast, it would be the cloud forecast for the next 18 hours.
With all that said however, confidence is high for risen
temperatures over the holiday weekend, especially away from the
coast.

***From Previous Discussion***

Chamber of commerce weather is expected over the weekend into
Monday with plenty of sunshine and temperatures rising to within
a few degrees of normal. Low confidence on when or if low clouds
and fog will reform but clouds should just be morning feature at
most. Gradients are already trending weaker today and expect that
to really kick in tonight into early Saturday with a 4-5mb
offshore trend, leading to some areas of breezy northeast winds
across the LA Mountains and some of the higher valley areas
Saturday morning.

.LONG TERM (TUE-FRI)...18/158 PM.

Onshore flow begins its return as early as Sunday but especially
Monday as the next trough deepens along the West Coast. No
precipitation expected locally but temperatures will begin a slow
cooling trend that will continue through the week. Low clouds and
fog will return to coastal areas by Monday if not before and
eventually the valleys as cooling aloft deepens the marine
inversion. The increasing onshore flow will create increasing
west to southwest winds especially in the Antelope Valley. But
otherwise a fairly low impact period of weather with another long
stretch of below normal temperatures. Longer range models indicate
a continued cool pattern through next week and even into the last
week of April.

&&

.AVIATION...19/0615Z.

At 0505Z at KLAX, the marine layer was 4200 ft deep. The top of
the weak inversion was 6600 feet with a temperature of 6 deg C.

High confidence in TAFs for KPMD and KWJF.

Moderate confidence in the rest of the TAFs. There is a 25 percent
chc that MVFR cigs will occur 11Z-16Z at sites with no low clouds
fcst. Low clouds at KSMX and KSBP may last until 18Z.

KLAX...Moderate confidence in TAF through 16Z then good
confidence. There is a 25 percent chc of BKN025 cigs 11Z-16Z. No
significant east wind component expected.

KBUR...Moderate confidence in TAF through 16Z then good
confidence. There is a 25 percent chc of BKN020 cigs 11Z-16Z.

&&

.MARINE...18/744 PM.

For the Outer Waters, moderate to high confidence in current
forecast. There is a 30% chance of localized Small Craft Advisory
(SCA) level northwest wind gusts over the Outer Waters through
this evening. Saturday through Monday morning, there is a 20-30%
chance for SCA level wind gusts around Point Conception and the
Channel Islands in the afternoon and evening hours. Elsewhere,
winds and seas are expected to remain sub advisory through Monday
morning. Then, Monday afternoon through Tuesday night, there is a
60-80% chance of SCA level winds, with a 40-50% chance of
continued SCA winds Wednesday into Wednesday night.

For the Inner Waters north of Point Sal, moderate to high
confidence in current forecast. Saturday through Monday morning,
high confidence in winds and seas remaining below SCA levels.
Starting Monday there is a 30-40% chance of SCA level winds in
the afternoon and evening hours, with the best chances Tuesday and
Wednesday.

For the Inner Waters south of Point Conception, moderate to high
confidence in current forecast. Today through Tuesday, high
confidence in winds and seas remaining below SCA levels across
most areas. The only exception will be the western half of the
Santa Barbara Channel where there is a 30-50% of SCA level wind
gusts on Saturday in the afternoon through evening hours.

&&

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

&&

$$

PUBLIC...MW/Kittell
AVIATION...Rorke
MARINE...Lewis/Smith
SYNOPSIS...RK

weather.gov/losangeles

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