Wednesday, October16, 2019 L-36.com


Marine Weather and Tides
Rancho Palos Verdes, CA

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:57AMSunset 6:19PM Wednesday October 16, 2019 2:35 PM PDT (21:35 UTC) Moonrise 8:21PMMoonset 9:29AM Illumination 89% Phase: Waning Gibbous; Moon at 18 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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PZZ655 Inner Waters From Point Mugu To San Mateo Pt. Ca Including Santa Catalina And Anacapa Islands- 214 Pm Pdt Wed Oct 16 2019
Tonight..W winds 10 to 20 kt in the evening, becoming variable 10 kt or less. Wind waves 1 to 3 ft. Mixed swell W 2 to 4 ft at 6 seconds and S 2 ft at 15 seconds. Patchy fog after midnight.
Thu..NW winds 5 to 10 kt, becoming W 15 to 20 kt in the afternoon. Wind waves 2 to 3 ft. W swell 3 to 4 ft at 7 seconds.
Thu night..Santa Monica bay, N winds 10 to 20 kt nearshore between malibu to san pedro in the evening, then increasing 15 to 25 kt across the santa Monica bay after midnight. Otherwise, se winds 10 kt or less south of long beach. Combined seas 4 to 6 ft dominant period 9 seconds.
Fri..West of santa Monica, N to ne winds 15 to 25 kt, becoming W 10 to 20 kt in the afternoon. Otherwise, se winds around 10 kt in the morning, becoming sw 10 to 15 kt in the afternoon. Combined seas 4 to 6 ft dominant period 9 seconds. W swell 4 to 6 ft at 9 seconds.
Fri night..NW winds 10 to 15 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. W swell 5 to 6 ft at 9 seconds.
Sat..NW winds 10 to 15 kt. Wind waves 2 ft or less. W swell 3 to 5 ft.
Sun..NW winds 10 to 15 kt. Wind waves 2 ft or less. W swell 2 to 4 ft.
PZZ600 214 Pm Pdt Wed Oct 16 2019
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 20z, or 1 pm pdt, a 978 mb low was across the gulf of alaska with a 1018 mb surface high was centered 350 nm west of point conception.


7 Day Forecast for Marine Location Near Rancho Palos Verdes, CA
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location: 33.7, -118.31     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 161836
afdlox
area forecast discussion
national weather service los angeles oxnard ca
1136 am pdt Wed oct 16 2019

Synopsis 16 808 am.

High pressure will keep temperatures above normal today. Then on
Thursday, a low pressure trough will cool temperatures throughout
the region. Gusty northerly flow will develop Thursday through
early next week, especially across santa barbara and los angeles
counties.

Short term (tdy-fri) 16 915 am.

A large batch of high clouds is starting to move over the state
so skies will be partly cloudy, maybe mostly cloudy at times
especially slo sb counties. Light offshore gradients continue but
the west east gradients will be trending onshore as a trough
approaches the west coast. In the meantime, the offshore flow will
create another warm day south of pt conception but the onshore
trends up north along with the thicker high clouds should lead to
some cooling there. Profilers from sb to lax show 3-6 degrees of
warming in the boundary layer and surface observations are
mirroring that trend with temps this morning up 5-10 degrees on
average from yesterday at this time. Some foothill areas are up as
much as 20 degrees from yesterday.

***from previous discussion***
a trof will begin to move through the state tonight. There will
be an increase in the low clouds. Strong NW flow across the outer
waters will flow over the western sba coast through the western
passes and canyons of the santa ynez range creating a weak
sundowner mainly west of the airport. These northerly winds will
keep the sba south coast cloud free.

The trof should be east of la county by mid day. Skies will be
partly and at times mostly cloudy due to the mid and high level
clouds associated with the trof. Moderate onshore flow to the east
will develop while the N S gradient will stay weakly offshore. The
onshore push to the east is much more influential on most of the
areas temps. This onshore push, the 10 dm drop in hgts, the
increase in mid and high level clouds and the deeper marine layer
will all conspire to drop temps anywhere from 6 to 12 degrees.

Most MAX temps away from the beaches will be 3 to 6 degrees blo
normal. The passage of the trof will usher in an extended period
of windy conditions. Advisory level NW winds will develop in the
afternoon across the central coast and the antelope vly.

During the predawn hours Friday morning the lax-bfl gradient will
fall to -5.3 mb, the sba-smx gradient will fall to -3.1 and the
sba-bfl grad will fall to a fairly impressive -4.8 mb. Advisory
level winds will likely develop across all of the sba south coast
(more focused on the montecito area) and the i-5 corridor.

Advisory level gusts may also affect the santa clarita vly,
portions of the san fernando vly and the santa monica mtns. There
will not be much marine layer left probably just a little in the
long beach area. This north flow will also create plenty of
upslope clouds on the north slopes of the mtns on the kern county
line. Some of these clouds will likely spill over into the cuyama
vly.

A little warmer Friday due to sunnier skies, slightly higher hgts
and the increase in northerly offshore flow. The winds will also
turn a little to the northeast and there will be some santa ana
winds that will not reach advisory levels.

Long term (sat-tue) 16 316 am.

The long term forecast is all about the winds.

Gfs and ec and most of the ensembles agree that dry fast moving nw
flow will be over the state for the weekend and will move east
later Sunday as a warm upper high moves into the state from the
sw.

There will be moderate offshore gradient from the north and near
neutral gradients in the W E direction. It is likely that there
will be another round of advisory level sundowner winds Friday
night but sub advisory north winds through the i-5 corridor. Max
temps will be similar to Friday under sunny skies.

A very weak short wave will add a little oomph to the north flow
Saturday night. The lax-bfl gradient will fall to -7.3 mb, the
sba-smx gradient will fall to -3.8 and the sba-bfl grad will fall
to a very strong -6.7 mb. These gradients will produce at least
strong wind advisory level winds and there is a decent chc of
warning level gusts 60 to 65 mph through the tejon pass and
montecito hills. This will be the most critical wind day and will
be monitored closely. Better offshore flow develops from the east
as well and this will contribute to a 3 to 6 degree warm up across
the area. Most MAX temps will come in 3 to 6 degrees above normal.

On Monday the north flow relaxes while the east flow increases.

This will set up a santa ana event. There is no upper or thermal
support for the santa ana so it will likely not even be a moderate
wind event. It will be a warm event, however, as 590 dm hgts
combine with the offshore flow to bring another 4 to 8 degrees of
warming. Almost all of the coasts and vlys will have MAX temps in
the mid 80s to lower 90s. MAX temps will be 10 to 20 degrees above
normal.

Not much change Tuesday. Maybe a little cooling along the coast
due to an earlier sea breeze.

Aviation 16 1836z.

At 1746z at klax, the marine layer was 900 feet deep. The top of
the inversion was near 1400 feet with a temperature of 26 c.

Good confidence in all 18z tafs. An area of low pressure
approaches the region on Thursday, so marine layer coverage will
increase tonight into Thursday, with only ksba getting left out of
the marine cloud action.

Klax... Good confidence in 18z taf. There is a 30 percent chance of
marine clouds arriving plus or minus two hours from forecasted
time. Any east wind component will remain less than 8 knots.

Kbur... .Good confidence in 18z taf. There is a 40 percent chance
of ifr ceiling Thursday morning.

Marine 16 943 am.

Outer waters... Moderate confidence for small craft advisory (sca)
level gusts this morning across the outer waters S of point sal
increasing to higher confidence by this afternoon. There is a 40%
chance for SCA level gusts for the northern waters through mid
morning, then higher confidence for SCA level gusts this afternoon.

Good confidence that SCA NW wind gusts and steep seas will continue
through Thursday mid afternoon. At that time, there will be a 60%
chance for gale force winds occurring by mid Thursday afternoon through
mid morning Friday. A gale watch has been issued valid from Thursday
mid afternoon through mid morning Friday for the entire outer waters.

After a brief decrease in winds Friday morning to SCA level gusts,
there is a 50% chance for another round of gale force winds by Friday
night or Saturday morning continuing into the weekend.

Inner waters N of point sal... Winds will remain below SCA levels
through early Thursday. Moderate to high confidence in winds increasing
to SCA level Thursday afternoon through Thursday evening. With a 20%
chance for local gale force winds Thursday evening.

For the inner waters south of point conception... Winds will remain
below SCA levels through early Thursday. Moderate to high confidence
in winds increasing to SCA level Thursday afternoon over the western
half of the santa barbara channel. There is a 30% chance for local
gale force gusts across the western portion Thursday evening. There
will be a 50% chance for SCA level gusts across the western portion
of the santa barbara channel both Fri and Sat late afternoon and
evening hours, then a 30-40% chance for Sunday afternoon and evening.

For the santa monica bay... There is a 50% chance for northerly sca
level gusts late Thursday evening through Friday mid morning.

Winds will then shift out of the south nearshore east of malibu
below SCA level thresholds by late morning into the afternoon
hours.

A long-period, large NW swell is expected to move into the waters
on Thursday and will likely persist through the weekend.

Lox watches warnings advisories
Ca... None.

Pz... Small craft advisory in effect until 3 pm pdt Thursday for
zones 670-673-676. (see laxmwwlox).

Gale watch in effect from Thursday afternoon through Friday
morning for zones 670-673-676. (see laxmwwlox).

Hazard potential outlook (fri-tue)
Moderate to strong northerly winds are expected through Sunday,
focused over santa barbara and los angeles counties. These winds
may produce damaging gusts near 60 mph Saturday night around the
santa ynez range. These winds and moderately dry conditions may
result in critical fire weather conditions in santa barbara
county. Gusty santa ana winds are possible Sunday afternoon
through Tuesday, with critical fire weather conditions possible
over los angeles and ventura counties.

Public... Mw rorke
aviation... Sweet kaplan
marine... Sweet kaplan
synopsis... Delerme phillips
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
OHBC1 - 9410660 - Los Angeles, CA 2 mi54 min 65°F1010.9 hPa
AGXC1 4 mi48 min SW 9.9 G 12
PFDC1 4 mi48 min S 8.9 G 11
PXAC1 5 mi48 min SSW 1.9 G 2.9
46222 - San Pedro, CA (092) 6 mi43 min 69°F3 ft
46256 6 mi36 min 66°F2 ft
BAXC1 6 mi48 min SSE 5.1 G 5.1
PFXC1 6 mi48 min SSW 9.9 G 12
PSXC1 6 mi48 min S 4.1 G 7
PRJC1 7 mi48 min SW 12 G 12
46253 11 mi36 min 68°F2 ft
46221 - Santa Monica Bay, CA (028) 20 mi40 min 68°F3 ft
ICAC1 - 9410840 - Santa Monica Pier 24 mi48 min SW 8.9 G 8.9 69°F 65°F1011.5 hPa
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 40 mi26 min W 14 G 16 65°F 67°F1011.6 hPa65°F

Wind History for Los Angeles Pier 400, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Torrance, Zamperini Field Airport, CA7 mi49 minWNW 710.00 miPartly Cloudy81°F62°F54%1010.5 hPa
Long Beach, Long Beach Airport, CA12 mi43 minS 610.00 miFair81°F53°F38%1010.2 hPa
Los Alamitos Army Airfield, CA15 mi98 minSW 87.00 miMostly Cloudy76°F59°F57%1011.8 hPa
Hawthorne, Hawthorne Municipal Airport, CA16 mi43 minWSW 910.00 miFair79°F57°F49%1010.4 hPa
Los Angeles, Los Angeles International Airport, CA17 mi43 minSW 910.00 miMostly Cloudy77°F61°F58%1010.5 hPa
Fullerton, Fullerton Municipal Airport, CA21 mi43 minS 510.00 miFair84°F57°F40%1009.8 hPa
Avalon Catalina Airport, CA21 mi45 minENE 310.00 miFair87°F44°F22%1009.6 hPa
Los Angeles / USC Campus Downtown, CA22 mi44 minN 010.00 miFair91°F53°F27%1009.5 hPa
John Wayne-Orange County Airport, CA23 mi43 minVar 510.00 miMostly Cloudy81°F57°F45%1010.2 hPa
Santa Monica, Santa Monica Municipal Airport, CA24 mi45 minSSW 1110.00 miFair76°F55°F48%1010.6 hPa

Link to 5 minute data for KTOA

Wind History from TOA (wind in knots)
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Last 24hrW12W17W16----W6--------------------CalmCalmCalmCalmCalmCalmW11NW7
1 day agoW15W14--W10SW8SW6--------------------CalmCalmCalmCalm--W10W10W12
2 days agoW14W12SW7SW5W4Calm--------------------CalmCalmCalmCalm--W9W9W13

Tide / Current Tables for Los Angeles (outer harbor), California
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Long Beach, Terminal Island, California
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Long Beach
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Wed -- 04:31 AM PDT     1.76 feet Low Tide
Wed -- 06:58 AM PDT     Sunrise
Wed -- 09:28 AM PDT     Moonset
Wed -- 10:44 AM PDT     5.72 feet High Tide
Wed -- 05:36 PM PDT     0.43 feet Low Tide
Wed -- 06:17 PM PDT     Sunset
Wed -- 08:20 PM PDT     Moonrise
Wed -- 11:52 PM PDT     3.97 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.23.62.92.21.81.82.33.1455.65.75.34.43.22.11.10.50.50.91.62.53.33.8

Weather Map
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GEOS Local Image of Southwest    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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Wind Forecast for Los Angeles/Oxnard, CA (17,4,5,8)
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Ground Weather Radar Station Santa Ana Mtns, CA
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The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.