Wednesday, December11, 2019
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Marine Weather and Tides
El Segundo, 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 6:47AMSunset 4:46PM Wednesday December 11, 2019 3:27 AM PST (11:27 UTC) Moonrise 5:39PMMoonset 7:11AM Illumination 100% Phase: Full Moon; Moon at 14 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- 311 Am Pst Wed Dec 11 2019
Today..Winds variable 10 kt or less, becoming nw 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 ft at 15 seconds and S 2 ft at 14 seconds.
Tonight..NW winds 10 to 15 kt, becoming N 5 to 10 kt after midnight. Wind waves 2 ft or less. W swell 3 to 4 ft at 9 seconds.
Thu..Winds variable 10 kt or less, becoming W 10 kt in the afternoon. Wind waves 2 ft or less. W swell 2 to 3 ft at 9 seconds.
Thu night..W winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. W swell 2 to 4 ft at 13 seconds.
Fri..Winds variable 10 kt or less, becoming W 10 kt in the afternoon. Wind waves 2 ft or less. W swell 4 to 5 ft at 17 seconds.
Fri night..NW winds 5 to 10 kt. Wind waves 2 ft or less. W swell 4 to 5 ft at 18 seconds.
Sat..NW winds 20 to 30 kt. Combined seas 5 to 7 ft.
Sun..NW winds 10 to 20 kt with gusts to 25 kt. Wind waves 2 to 4 ft. W swell 4 to 5 ft.
PZZ600 311 Am Pst Wed Dec 11 2019
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 10z or 2 am pst, a 1026 mb high pressure center was located 300 nm southwest of point conception and a 960 mb low pressure center was located in the gulf of alaska.


7 Day Forecast for Marine Location Near El Segundo, CA
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location: 33.91, -118.43     debug


Area Discussion for - Los Angeles/Oxnard, CA
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FXUS66 KLOX 110740 AFDLOX

Area Forecast Discussion National Weather Service Los Angeles/Oxnard CA 1140 PM PST Tue Dec 10 2019

SYNOPSIS. 10/827 PM.

Temperatures will trend warmer into Friday despite some periods of clouds as high pressure shifts off to the east. A large westerly swell is expected to arrive Thursday, bringing high waves to most coastal regions through the weekend. Additionally, breezy northerly winds will develop Wednesday and last into the weekend.

SHORT TERM (TUE-FRI). 10/801 PM.

***UPDATE***

Overall, a very quiet evening across the district. Latest satellite and surface observations indicate partly cloudy skies with varying amounts of high clouds moving overhead. Latest sounding data indicates decent inversion based around 1700 feet across the Central Coast, but a much weaker inversion based around 600 feet south of Point Conception. With gradients remaining weakly offshore or neutral overnight, do not anticipate much coastal stratus/fog. Best chances for low clouds and fog will be across the Central Coast and the interior valleys of San Luis Obispo county, but only a moderate confidence forecast. South of Point Conception, expect skies to remain stratus-free although there is a slight chance of some stratus/fog across the LA coast late tonight. As for winds, no issues are expected as current wind speeds are very light.

Current forecast has a good handle on the immediate short term. So, no updates are planned at this time.

***From Previous Discussion***

A weak trough and cold front are approaching from the west. The ridge over us today will hold together long enough to keep rain to the north but there will be some clouds and cooler temps with it on Wednesday.

Behind that Thu/Fri we'll see an increase in northerly winds, especially in favored areas like srn SB County and the I5 corridor but should be below advisory levels. At the same time an upper ridge will rebuild from the west and peak in strength on Friday. So between the ridge and light offshore gradients temps will warm up in all areas with Friday likely the warmest day we've seen since well back into November and also likely the warmest day of many after that as we shift into a much cooler pattern again next week.

LONG TERM (SAT-TUE). 10/147 PM.

The ridge will break down Saturday as the next trough drops in from the northwest. This one is not taking a favorable path for precip in our area but there could be some showers late Saturday near our shared border with Kern County, from southeast SLO County through the Grapevine area. Otherwise expect several degrees of cooling Saturday as onshore flow returns to lower elevations. Still gusty northerly winds expected in the mountains but likely below advisory levels on Saturday.

The trough passes through on Sunday which will provide a boost to the northerly flow already in place. Models showing anywhere from 5-7mb northerly gradient to BFL late Sunday into Monday and also 3-5mb SBA-SMX gradient so we'll likely see advisory level north winds developing in srn SB County and the I5 corridor and likely the Antelope Valley as well. Highs Sunday will drop a few more degrees as cooler air aloft moves in behind the trough passage putting most areas a few degrees below normal.

A brief upper ridge will move overhead Monday for slightly warmer temps and highs near seasonal norms. Northerly winds should decrease after the morning.

The models diverge Tuesday with the ECMWF showing a stronger and longer lasting ridge. However a vast majority of the ensembles support the cooler GFS solution which shows the next system rapidly approaching the Central Coast Tuesday with some rain chances there by afternoon. Those model differences continue through the end of the week with the deterministic EC favoring a dry/warmer pattern while the GFS and at least some of both ensembles much cooler with some precip at times.

AVIATION. 11/0740Z.

At 06Z, there was no marine inversion at KLAX.

Lots of high clouds across the region overnight, especially across northern sections. Expect stratus on the Central Coast and in the Santa Ynez and Salinas Valleys overnight and Wed morning. Conds will generally be IFR to LIFR, except VLIFR in the Salinas Valley. S of Pt Conception, patchy low clouds and fog are expected, and IFR to low MVFR cigs are a possibility late tonight/Wed morning at coastal TAFs in VTU and L.A. County.

KLAX . Moderate confidence in 06Z TAF. There is a 30% chance of IFR to low MVFR conditions between 09Z-17Z. No significant east wind component is expected.

KBUR . High confidence in 06Z TAF with VFR conds expected thru pd.

MARINE. 10/801 PM.

Moderate confidence that winds will stay under Small Craft Advisory (SCA) through Wednesday morning, with a long duration of SCA conditions likely starting Wednesday afternoon, which will continue through at least Sunday. These winds will be focused from the Central Coast to San Nicolas Island, but will affect portions of the Santa Barbara Channel and Santa Monica Basin at times, especially over the weekend when the winds peak. Short period choppy seas will become more prevalent everywhere.

A large and long period W to NW swell will impact the coastal waters later Thursday and continue through Saturday, resulting in hazardous sea conditions and large breaking waves near shore. Breaking waves at the Morro Bay and Ventura Harbor entrances are possible.

Patchy dense fog with low visibility is possible anywhere through at least Wednesday.

BEACHES. 10/801 PM.

A large long-period west to northwest swell will push on to the coast of central and southern California Thursday night, peak on Friday, then slowly diminish over the weekend. Surf will likely peaks Swells off the Central Coast will likely peak between 12 and 16 feet and 6 to 10 feet over the southern waters. High Surf Advisories will likely be needed over all beaches during the peak, with strong rip currents and dangerous breaking waves.

With high tides around 6.5 feet Friday and Saturday, minor coastal flooding is possible during the late morning high tides. Any coastal flooding impacts should be confined to the beaches, with flooding possible in the most vulnerable parking lots, bike paths, and walkways. There is a small chance of more impactful flooding over vulnerable roads in the Ventura area.

LOX WATCHES/WARNINGS/ADVISORIES. CA . Beach Hazards Statement in effect from Thursday morning through Monday morning for zones 34-35. (See LAXCFWLOX). Beach Hazards Statement in effect from Thursday evening through Sunday morning for zones 39>41-87. (See LAXCFWLOX). PZ . Small Craft Advisory in effect from 3 PM Wednesday to 3 AM PST Thursday for zone 650. (See LAXMWWLOX). Small Craft Advisory in effect from 3 PM Wednesday to 3 PM PST Saturday for zones 673-676. (See LAXMWWLOX).

.HAZARD POTENTIAL OUTLOOK (FRI-TUE).

High surf is likely and minor coastal flooding is possible for late this week at area beaches. Strong north winds possible Sunday in southern Santa Barbara County, and parts of LA/Ventura Counties.



PUBLIC . MW AVIATION . DB MARINE . Kittell BEACHES . Kittell SYNOPSIS . Phillips

weather.gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ICAC1 - 9410840 - Santa Monica Pier 8 mi57 min NE 1.9 G 5.1 53°F 62°F1022.6 hPa
46221 - Santa Monica Bay, CA (028) 11 mi61 min 62°F2 ft
PXAC1 13 mi57 min NW 1.9 G 1.9
BAXC1 14 mi63 min NNE 4.1 G 4.1
PSXC1 15 mi57 min Calm G 1.9
OHBC1 - 9410660 - Los Angeles, CA 16 mi57 min 63°F1022.7 hPa
PFDC1 16 mi57 min NNW 1 G 1.9
PFXC1 16 mi57 min N 1.9 G 2.9
AGXC1 17 mi57 min N 1 G 1.9
PRJC1 18 mi57 min Calm G 1
46256 19 mi57 min 62°F2 ft
46222 - San Pedro, CA (092) 21 mi64 min 62°F2 ft
46253 27 mi57 min 63°F2 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 35 mi47 min NW 7.8 G 9.7 59°F 62°F1022.3 hPa59°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, CA3 mi34 minE 410.00 miPartly Cloudy52°F46°F83%1022.1 hPa
Hawthorne, Hawthorne Municipal Airport, CA5 mi34 minN 09.00 miFair51°F46°F83%1022.4 hPa
Santa Monica, Santa Monica Municipal Airport, CA8 mi36 minENE 310.00 miFair49°F44°F83%1022.1 hPa
Los Angeles / USC Campus Downtown, CA11 mi35 minN 010.00 miFair52°F44°F75%1022 hPa
Long Beach, Long Beach Airport, CA16 mi34 minN 02.50 miFog/Mist49°F46°F93%1022.2 hPa
Burbank - Bob Hope Airport, CA20 mi34 minN 010.00 miFair46°F37°F73%1021.4 hPa
Van Nuys, Van Nuys Airport, CA21 mi36 minN 010.00 miFair46°F41°F83%1021.7 hPa
Los Alamitos Army Airfield, CA22 mi89 minN 06.00 miFog/Mist48°F47°F100%1022.6 hPa
Fullerton, Fullerton Municipal Airport, CA24 mi34 minN 06.00 miFog/Mist49°F45°F86%1022 hPa

Link to 5 minute data for KLAX

Wind History from LAX (wind in knots)
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Last 24hrNE6NE3NE6NE7E4333CalmS4SW6W9W6W6W7NW3NW4NW64NW54CalmE4E4
1 day agoCalmNE4CalmE3E3E4SE4S5CalmCalmW7SW7W13W7SW5SW7SW3SE4E64NE5CalmNE4NE5
2 days agoW3W4NW4W4SW4S3S5SW10SW11SW11W12SW13W14W12
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Tide / Current Tables for El Segundo, Santa Monica Bay, California
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El Segundo
Click for Map
Wed -- 01:48 AM PST     1.84 feet Low Tide
Wed -- 06:10 AM PST     Moonset
Wed -- 06:48 AM PST     Sunrise
Wed -- 08:06 AM PST     6.02 feet High Tide
Wed -- 03:17 PM PST     -0.62 feet Low Tide
Wed -- 04:38 PM PST     Moonrise
Wed -- 04:45 PM PST     Sunset
Wed -- 09:14 PM PST     Full Moon
Wed -- 09:40 PM PST     3.72 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.421.82.22.93.94.95.765.853.72.30.9-0.1-0.6-0.50.21.22.23.13.63.73.4

Tide / Current Tables for Santa Monica, California
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Santa Monica
Click for Map
Wed -- 01:37 AM PST     1.93 feet Low Tide
Wed -- 06:11 AM PST     Moonset
Wed -- 06:49 AM PST     Sunrise
Wed -- 07:55 AM PST     6.26 feet High Tide
Wed -- 03:05 PM PST     -0.64 feet Low Tide
Wed -- 04:38 PM PST     Moonrise
Wed -- 04:45 PM PST     Sunset
Wed -- 09:14 PM PST     Full Moon
Wed -- 09:31 PM PST     3.84 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.4222.43.24.25.366.35.94.93.62.10.7-0.3-0.6-0.40.31.42.53.33.83.83.4

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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Los Angeles/Oxnard, CA (6,6,7,8)
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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.