Saturday, November28, 2020
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Marine Weather and Tides
Palos Verdes Estates, CA

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.

Sunrise 6:36AMSunset 4:46PM Friday November 27, 2020 9:13 PM PST (05:13 UTC) Moonrise 4:27PMMoonset 5:03AM Illumination 96% Phase: Waxing Gibbous; Moon at 13 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- 816 Pm Pst Fri Nov 27 2020
Tonight..NW winds 10 to 15 kt, becoming ne 15 to 20 kt after midnight. Wind waves 2 to 3 ft. W swell 2 to 3 ft at 13 seconds.
Sat..NE winds 10 to 15 kt, becoming N 10 kt in the afternoon. Wind waves 2 ft or less. W swell 2 ft at 12 seconds.
Sat night..NW winds 5 to 10 kt. Wind waves 2 ft or less. W swell 2 ft at 14 seconds.
Sun..N winds 5 to 10 kt. Wind waves 2 ft or less. W swell 2 ft at 14 seconds.
Sun night..NW winds 10 to 15 kt, becoming 5 to 10 kt after midnight. Wind waves 2 ft or less. W swell 2 ft at 14 seconds.
Mon..N winds 5 to 10 kt. Wind waves 2 ft or less. W swell 2 ft at 13 seconds.
Mon night..NW winds 5 to 10 kt. Wind waves 2 ft or less. W swell 2 ft at 13 seconds.
Tue..N winds 5 to 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and S 2 ft.
Wed..N winds 10 to 15 kt. Wind waves 2 ft or less. W swell 2 ft.
PZZ600 816 Pm Pst Fri Nov 27 2020
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 03z, or 7 pm pst, a 1026 mb high pressure center was located 550 nm northwest of point conception, and a weak thermal trough was over the southern california coastline.


7 Day Forecast for Marine Location Near Palos Verdes Estates, CA
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location: 33.81, -118.41     debug


Area Discussion for - Los Angeles/Oxnard, CA
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FXUS66 KLOX 280423 AFDLOX

Area Forecast Discussion . UPDATED National Weather Service Los Angeles/Oxnard CA 823 PM PST Fri Nov 27 2020

SYNOPSIS. 27/706 PM.

Periods of gusty northeast winds will persist through Sunday with the strongest winds occurring over portions of Ventura and Los Angeles counties. Cold overnight lows with areas of patchy frost are expected in wind sheltered areas for the next two nights. Mostly clear skies and breezy conditions will continue through next week.

SHORT TERM (FRI-MON). 27/725 PM.

***UPDATE***

A very quiet night. Skies are clear. The offshore gradients are similar from the east but are 1.8 mb weaker from the north. All of the upper level and thermal support has ended and as a result the strongest wind gusts have diminished to 25 to 35 mph. These gusts are mostly in the mtns and there is not much wind across the flatter terrain.

The focus now switches from the winds to the overnight lows. The clear skies and very dry air will allow the temperatures in the wind sheltered locations to plummet. There are plenty of freeze and frost advisories out for coastal and vlys areas (The interior sections have already experienced two hard freezes and are now excluded from further freeze products) please see the product LAXNPWLOX for all of the details.

Tomorrow will be a very pleasant day with sunny skies, light offshore breezes and max temps 4 to 6 degrees above normal (all of the coasts and vlys will see highs in the 70s)

No updates are planned this evening.

***From Previous Discussion***

Upper level ridging will build into the forecast area through tonight with H5 heights increasing to around 575-576 dm. This weak upper level ridging will continue over the forecast area Sat, then a weak 575 dm upper level trof will move into the area Sat night before another weak pop-up ridge moves in for Sun with H5 heights around 576-577 dm. H5 heights will then increase further to 578-579 dm by Mon afternoon.

Good offshore pressure gradients to the N and E will continue tonight into Sat morning, with the NAM predicting the 12Z Sat LAX- DAG gradient to be -5.6 mb, and LAX-BFL to be -2.9 mb. These gradients will help to support another round of gusty NE winds across portions of VTU/L.A. Counties tonight into Sat morning, but the upper level support will diminish enough that Advisory level winds should be more localized. Still, some wind gusts could be around 45 mph in the windiest mtn and foothill locations. Otherwise, most of the wind-prone areas should see winds in the 15 to 30 mph range during the period. Offshore gradients will weaken slightly for Sat night thru Mon, but more breezy to locally gusty offshore winds can be expected mainly night and morning hours over the wind-prone areas of VTU/L.A. Counties.

Mostly clear skies will continue tonight through Mon. Daytime temps will turn several degrees above normal each day through Mon, with highs in the 70s for much of the coast and vlys. Nighttime temps will turn quite cold in wind-sheltered locations over the weekend. It looks like frost will be possible in the interior vlys, the Ojai Vly, and even some inland coastal areas of SLO/SBA Counties. A Frost Advisory is in effect for the Central Coast later tonight into Sat morning, with a Freeze warning in the Ojai Vly. Additional Frost Advisories or Freeze Warnings may be needed for these areas Sat night into Sun morning as well.

LONG TERM (TUE-FRI). 27/153 PM.

There are some fairly significant differences between the deterministic EC and GFS during the extended period. The EC digs an upper level low S into AZ on Tue, while the GFS is much weaker and further E with an upper level trof. Upper level ridging over the forecast area is indicated from both models for Wed. The GFS digs a rather sharp upper level trof into the srn Great Basin for Thu with sharply increasing offshore pressure gradients over the forecast area, while the EC keeps upper level ridging and weaker offshore gradients over srn CA. The GFS brings in a broad upper level trof on Fri, while the EC keeps upper level ridging over the area. The EC mean ensembles show the upper level low over AZ/NM for later Tue thru Wed with an extended trof into srn CA, followed by upper level ridging into srn CA Thu and Fri. The GFS mean ensembles show the upper trof at mid week remaining well to the E with upper ridging into Thu, followed by some upper level troffiness developing over the area from the E on Fri while an upper level ridge lingers over nrn CA.

Both models keep dry weather over the forecast area thru the extended period. The models indicate increasing offshore flow over the area sometime during the middle of next week, with the potential for strong and gusty N to NE winds and high fire danger sometime between Tue night and Thu morning. The GFS does forecast LAX-DAG gradient to fall to as low as -8.5 mb at 18Z Thu. At any rate, this situation is something we will be closely monitoring.

It looks like mostly clear skies will prevail across the forecast area Tue thru Fri, with temps several degrees above normal thru Wed then cool to slightly above seasonal norms for Thu and Fri.

AVIATION. 27/2350Z.

At 2315Z at KLAX, there was neither a marine layer nor an inversion.

High confidence in all CAVU TAFs.

KLAX . High confidence in CAVU TAF. No significant east wind is expected.

KBUR . High confidence in CAVU TAF.

MARINE. 27/821 PM.

High confidence in forecast through Sunday with conditions remaining under Small Craft Advisory levels.

There is a 50-60% chance of SCA level winds on Monday and possibly Tuesday for the outer waters from the Central Coast to San Nicolas Island.

FIRE WEATHER. 27/319 PM.

Strong and gusty northeast winds will continue across the area into early this afternoon, strongest over Los Angeles and Ventura counties. The offshore winds will weaken later today, but remain breezy in many areas into Saturday. Wind gusts of 40 to 60 mph are expected over Ventura and much of Los Angeles Counties this morning, strongest over the most wind-exposed foothills and the mountains. Minimum humidities are expected to be in the 5 to 15 percent range in many areas today and Saturday, with very poor overnight recoveries. Red Flag Warnings conditions are expected to continue across Los Angeles and Ventura Counties except for the Antelope Valley through early this evening, when the winds begin to ramp down. However, the winds are expected to increase again some later tonight into Saturday, with minimum humidities remaining very low, in the single digits to mid teens. As a result, the secondary Red Flag criteria are expected to be met tonight through early Saturday evening for the Los Angeles and Ventura mountains and windiest valleys (Santa Clarita and Ventura Valleys) and the Red Flag Warning has been extended for these areas through 6 PM Saturday.

Mild temperatures will persist through the weekend, with highs generally between 65 and 75 degrees. Northeast wind gusts of 20 to 35 mph are also expected over the wind prone areas of Santa Barbara and San Luis Obispo Counties at this time as well, resulting in elevated to brief critical fire weather conditions. Dry air will persist across the area through next Thursday, with gusty north winds possible Monday night into Tuesday. There is a growing potential for moderate Santa Ana winds and possible ed Flag conditions developing over Los Angeles and Ventura Counties sometime between Wednesday and Thursday.

LOX WATCHES/WARNINGS/ADVISORIES. CA . Frost Advisory in effect from 2 AM to 9 AM PST Saturday for zones 34-35. (See LAXNPWLOX). Freeze Warning in effect from 2 AM to 9 AM PST Saturday for zone 44. (See LAXNPWLOX). Red Flag Warning in effect until 6 PM PST Saturday for zones 244>246-253-254-288. (See LAXRFWLOX). PZ . NONE.

.HAZARD POTENTIAL OUTLOOK (MON-FRI).

An extended dry and warmer pattern is expected through Monday with persistent elevated fire weather conditions. Another strong Santa Ana wind event with critical fire weather conditions is possible next Wednesday or Thursday.



PUBLIC . Sirard AVIATION . Rorke MARINE . Stewart/Rorke FIRE . Gomberg SYNOPSIS . Sirard/TF

weather.gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PSXC1 10 mi55 min NW 2.9 G 6
OHBC1 - 9410660 - Los Angeles, CA 10 mi55 min 60°F1021.7 hPa
PFXC1 11 mi55 min N 5.1 G 7 62°F
46221 - Santa Monica Bay, CA (028) 12 mi47 min 60°F3 ft
46256 13 mi47 min 58°F2 ft
PRJC1 13 mi55 min NNW 7 G 8
46222 - San Pedro, CA (092) 14 mi52 min 62°F3 ft
ICAC1 - 9410840 - Santa Monica Pier 14 mi55 min Calm G 1 58°F 60°F1021.8 hPa
46268 17 mi73 min 62°F 61°F1 ft
46253 20 mi47 min 58°F2 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 34 mi43 min NW 9.7 G 12 59°F 58°F1021.1 hPa50°F

Wind History for Los Angeles Berth 161,
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Torrance, Zamperini Field Airport, CA4 mi3.4 hrsW 710.00 miClear55°F30°F38%1020.7 hPa
Hawthorne, Hawthorne Municipal Airport, CA9 mi20 minN 010.00 miFair54°F32°F43%1021.3 hPa
Los Angeles, Los Angeles International Airport, CA9 mi20 minNE 310.00 miFair54°F28°F38%1021.2 hPa
Long Beach, Long Beach Airport, CA14 mi20 minN 010.00 miFair53°F28°F40%1021.3 hPa
Los Angeles / USC Campus Downtown, CA16 mi21 minN 010.00 miFair53°F27°F37%1021.2 hPa
Los Alamitos Army Airfield, CA19 mi15 minN 610.00 miFair54°F21°F27%1021.6 hPa
Fullerton, Fullerton Municipal Airport, CA23 mi20 minN 010.00 miFair56°F19°F24%1021 hPa

Link to 5 minute data for KTOA

Wind History from TOA (wind in knots)
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Last 24hr----------------------------44CalmW5NW5W11W11W9W7W7
1 day ago----------------------------CalmCalm--CalmW4W8W11W7W5SE4
2 days ago----------------------------Calm--NE3W7W10W11--------

Tide / Current Tables for El Segundo, Santa Monica Bay, California
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El Segundo
Click for Map
Sat -- 01:25 AM PST     1.61 feet Low Tide
Sat -- 04:59 AM PST     Moonset
Sat -- 06:38 AM PST     Sunrise
Sat -- 07:42 AM PST     5.62 feet High Tide
Sat -- 02:39 PM PST     -0.02 feet Low Tide
Sat -- 03:57 PM PST     Moonrise
Sat -- 04:44 PM PST     Sunset
Sat -- 08:52 PM PST     3.76 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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21.61.72.2344.95.55.65.24.231.80.70.100.41.22.233.63.83.53

Tide / Current Tables for Los Angeles Harbor, Mormon Island, California
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Los Angeles Harbor
Click for Map
Sat -- 01:14 AM PST     1.67 feet Low Tide
Sat -- 04:58 AM PST     Moonset
Sat -- 06:37 AM PST     Sunrise
Sat -- 07:33 AM PST     5.75 feet High Tide
Sat -- 02:28 PM PST     -0.02 feet Low Tide
Sat -- 03:56 PM PST     Moonrise
Sat -- 04:44 PM PST     Sunset
Sat -- 08:43 PM PST     3.82 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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21.71.82.43.24.25.15.75.75.24.22.91.60.600.10.61.42.43.23.73.83.53

Weather Map
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wmap_P
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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Ground Weather Radar Station Santa Ana Mtns, CA
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Disclaimer:
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 numerous 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.