Tuesday, December1, 2020
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Marine Weather and Tides
Manhattan Beach, 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 6:39AMSunset 4:46PM Tuesday December 1, 2020 12:16 AM PST (08:16 UTC) Moonrise 6:55PMMoonset 8:51AM Illumination 99% Phase: Waning Gibbous; Moon at 16 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- 839 Pm Pst Mon Nov 30 2020
Tonight..NW winds 5 to 10 kt. Wind waves 2 ft or less. W swell 2 to 3 ft at 13 seconds.
Tue..N winds 5 to 10 kt. Wind waves 2 ft or less. W swell 3 ft at 15 seconds.
Tue night..W winds 5 to 10 kt, becoming ne 10 to 15 kt after midnight. Wind waves 2 ft or less. W swell 3 ft at 8 seconds.
Wed..NE winds 10 to 15 kt, becoming W in the afternoon. Wind waves 2 ft or less. W swell 2 to 3 ft at 8 seconds.
Wed night..NW winds 5 to 10 kt. Wind waves 2 ft or less. W swell 2 to 3 ft at 13 seconds.
Thu..NE winds 10 to 20 kt. Wind waves 2 to 3 ft. W swell 2 ft. S swell 2 ft.
Thu night..NE winds 10 to 20 kt with gusts to 25 kt. Wind waves 2 to 4 ft. W swell 2 to 3 ft.
Fri..N winds 10 to 20 kt with gusts to 25 kt. Wind waves 2 to 4 ft. W swell 2 to 4 ft.
Sat..N winds 10 to 15 kt. Wind waves 2 ft or less. W swell 2 to 3 ft.
PZZ600 839 Pm Pst Mon Nov 30 2020
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 04z, or 8 pm pst, a 1031 mb high was 300 nm northwest of eureka and a weak thermal trough was over the southern california bight.


7 Day Forecast for Marine Location Near Manhattan Beach, CA
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location: 33.88, -118.41     debug


Area Discussion for - Los Angeles/Oxnard, CA
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FXUS66 KLOX 010539 AFDLOX

Area Forecast Discussion . UPDATED National Weather Service Los Angeles/Oxnard CA 939 PM PST Mon Nov 30 2020

SYNOPSIS. 30/931 PM.

An offshore flow pattern will likely persist over the region through the week and keep warm and dry days in place for the period with cool overnight lows in wind sheltered areas. Gusty north to northeast winds for the next several nights and mornings will turn primarily northeasterly for the latter half of the week. Damaging Santa Ana winds are possible across the mountains between Thursday and Friday.

SHORT TERM (MON-THU). 30/924 PM.

The latest satellite imagery shows an upper-level blocking ridge of high pressure building into the eastern Pacific Ocean and along the West Coast this evening. A weak disturbance will move to the north of the region and continue to tighten the surface pressure gradient overnight tonight and into Tuesday morning. A wind advisory continues across southern Santa Barbara County and through the Interstate 5 Corridor through late tonight and Tuesday morning respectively. The current timing looks agreeable for the current wind advisory for these areas.

A wind advisory was added for the San Luis Obispo County Central Coast from late tonight through Tuesday morning as marginally gusty Santa Lucia winds in the hills this evening will expand and strengthen overnight. Local 3-km WRF solutions shows the strongest surface winds occurring between 5 am and 8 am Tuesday, then winds will start to diminish.

There is still some discontinuities across the models as far as timing and strength for Santa Ana winds for later this week. A wind advisory could be needed for the valleys and mountains of Los Angeles and Ventura Counties Tuesday night and Wednesday morning. While there is not a lot of upper-level wind support, the thermal support could be the driving factor and assert some influence on the pressure gradients. While marginal, the cold air could tip the scales in favor of a wind advisory between Tuesday night and Wednesday. From there, the models suggest winds ramping up between Wednesday night and Friday. The main questions still revolve around the finer details, the exact timing and strength of the winds. Much will depend on where the cutoff trough of low pressure moving down the leading edge of the ridge sets up.

***From Previous Discussion***

The previously discussed upper level trough will break off from the prevailing jetstream later on Wednesday, then spin and wobble around like an uncontrolled top. As they often due with such cut- off lows, the computer projections continue to vary a lot between each other and between each run. Several project the low following a rare path back to the west and into Arizona. Others spin the low off and into Missouri. If you squint at the solutions, you see a consistent story of some sort of significant offshore flow sometime from Wednesday night through the end of the week. When you look closer however, it is hard to glean much in terms of more precise timing and strengthen. With that said, the potential exists for moderate to strong winds, especially if the low tracks to the west . and Thursday and Friday is the most probable time period for the strongest winds. We can hope for more consistency in the projections as we get closer to the event, but cannot expect much clarity with such a pattern. At least there is some certainty in generally clear skies (except for some high clouds on Thursday) and temperatures holding at 5-10 degrees above normal.

LONG TERM (FRI-MON). 30/225 PM.

Most of the details for Friday are covered in the previous section, with the potential for moderate to strong offshore flow continuing. The upper level pattern remains rather chaotic over the weekend, but there is a general idea of an upper level low to our south and a narrow high nosing in to our north. This pattern favors continued dry offshore flow, albeit not as strong as what could happen Thursday and Friday. Temperatures will largely be dependent on where the low to the south ends up. The deeper and closer to us it is, the cooler it will be but even the most extreme solutions keep temperatures right around normal.

AVIATION. 01/0537Z.

At 0521Z at KLAX, there was no marine layer. There was a sfc based inversion with a top of 900 feet and a temperature of 22 C.

High confidence in CAVU TAFs.

KLAX . High confidence in CAVU TAF. Good confidence that an east wind component will be 5 kt or less.

KBUR . High confidence in CAVU TAF.

MARINE. 30/827 PM.

For the Outer Waters, moderate to high confidence in current forecast. Small Craft Advisory (SCA) level winds and seas are likely to continue through Tuesday evening. For Wednesday through Friday, winds and seas are expected to remain below SCA levels although there is a 50% chance of SCA level northeast winds across the portion south of the Channel Islands on Thursday.

For the Inner Waters north of Point Sal, moderate to high confidence in current forecast. There is a 40% chance of SCA level winds Tuesday afternoon and evening. Otherwise, good confidence in winds and seas remaining below SCA levels through the period.

For the Inner Waters south of Point Conception, low confidence in current forecast, mainly due to timing issues. Good confidence that winds and seas will remain below SCA levels tonight, except for a 40% chance of SCA level winds across the western half of the Santa Barbara Channel. For Tuesday, there is a 40% chance of SCA level northeast winds south of Ventura, especially closer to shore. For Wednesday through Friday, there is a still a 60% chance of SCA level northeast winds from Ventura southward, but some differences still remain in the various models.

LOX WATCHES/WARNINGS/ADVISORIES. CA . Wind Advisory in effect until 10 AM PST Tuesday for zones 34-53-54. (See LAXNPWLOX). Wind Advisory in effect until 3 AM PST Tuesday for zones 39-52. (See LAXNPWLOX). Fire Weather Watch in effect from late Wednesday night through Friday afternoon for zones 244>246-253-254-288-547-548. (See LAXRFWLOX). PZ . Small Craft Advisory in effect until 9 PM PST Tuesday for zones 670-673-676. (See LAXMWWLOX).

.HAZARD POTENTIAL OUTLOOK (THU-MON).

Potentially strong and long lasting offshore winds and dry conditions would lead to critical fire weather conditions and wind damage Thursday into the weekend. High surf or strong rip currents will create hazardous ocean conditions at most beaches Thursday into Saturday. Near freezing conditions over coastal Santa barbara and San Luis Obispo Counties may lead to plant damage this weekend.



PUBLIC . Hall/Kittell AVIATION . Rorke MARINE . Sweet/Stewart SYNOPSIS . Hall

weather.gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ICAC1 - 9410840 - Santa Monica Pier 10 mi47 min NE 4.1 G 6 57°F 60°F1019.4 hPa
PXAC1 11 mi59 min NNW 1.9 G 2.9
46221 - Santa Monica Bay, CA (028) 12 mi51 min 62°F3 ft
BAXC1 12 mi53 min NNE 2.9 G 4.1
PSXC1 12 mi47 min ENE 2.9 G 2.9
46268 13 mi47 min 60°F2 ft
OHBC1 - 9410660 - Los Angeles, CA 13 mi47 min 59°F1019.6 hPa
PFDC1 13 mi53 min NE 1.9 G 1.9
AGXC1 14 mi47 min SSE 1.9 G 1.9 57°F 1019 hPa
PFXC1 14 mi47 min E 2.9 G 2.9 58°F
PRJC1 16 mi47 min ENE 2.9 G 2.9
46256 17 mi51 min 58°F4 ft
46222 - San Pedro, CA (092) 19 mi56 min 61°F3 ft
46253 24 mi51 min 61°F3 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 35 mi27 min WNW 5.8 G 7.8 60°F 60°F3 ft1018.9 hPa55°F

Wind History for Santa Monica, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Los Angeles, Los Angeles International Airport, CA4 mi24 minN 010.00 miFair57°F39°F51%1018.6 hPa
Hawthorne, Hawthorne Municipal Airport, CA5 mi24 minN 010.00 miFair52°F45°F77%1018.8 hPa
Los Angeles / USC Campus Downtown, CA12 mi25 minN 310.00 miFair59°F23°F25%1018.5 hPa
Long Beach, Long Beach Airport, CA14 mi24 minN 010.00 miFair50°F44°F80%1018.8 hPa
Los Alamitos Army Airfield, CA20 mi19 minN 010.00 miFair46°F37°F73%1018.9 hPa
Burbank - Bob Hope Airport, CA22 mi24 minWSW 410.00 miFair53°F16°F23%1018.3 hPa
Fullerton, Fullerton Municipal Airport, CA23 mi24 minN 010.00 miFair52°F30°F45%1018.4 hPa
Van Nuys, Van Nuys Airport, CA23 mi26 minSSW 310.00 miFair59°F15°F18%1018.7 hPa

Link to 5 minute data for KLAX

Wind History from LAX (wind in knots)
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Last 24hrNE3CalmE3CalmCalmE3SE3SE5CalmNW4CalmW11W10W12W9W8SW6W5SW5S3NE4CalmE5Calm
1 day agoE4E3E3CalmNE4CalmE4CalmNE5NE5S3CalmW7W10W9W9W10W8W8CalmSE4SE6E3NE4
2 days agoCalmCalmNE3NE3CalmE53CalmNE3NE6CalmNW4W8W8W9W7W8NW6W7W7CalmCalmE3NE4

Tide / Current Tables for El Segundo, Santa Monica Bay, California
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El Segundo
Click for Map
Tue -- 02:41 AM PST     2.20 feet Low Tide
Tue -- 06:41 AM PST     Sunrise
Tue -- 07:51 AM PST     Moonset
Tue -- 08:59 AM PST     5.77 feet High Tide
Tue -- 04:20 PM PST     -0.35 feet Low Tide
Tue -- 04:44 PM PST     Sunset
Tue -- 05:54 PM PST     Moonrise
Tue -- 10:55 PM PST     3.44 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.12.62.32.22.53.244.95.55.85.54.73.62.310.1-0.3-0.20.31.122.83.33.4

Tide / Current Tables for Santa Monica, Municipal Pier, California
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Santa Monica
Click for Map
Tue -- 02:29 AM PST     2.29 feet Low Tide
Tue -- 06:41 AM PST     Sunrise
Tue -- 07:52 AM PST     Moonset
Tue -- 08:49 AM PST     5.94 feet High Tide
Tue -- 04:12 PM PST     -0.36 feet Low Tide
Tue -- 04:44 PM PST     Sunset
Tue -- 05:54 PM PST     Moonrise
Tue -- 10:44 PM PST     3.48 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.12.62.32.32.73.44.35.25.85.95.64.73.52.10.90-0.3-0.20.41.32.22.93.43.5

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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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.