Sunday, September19, 2021
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Marine Weather and Tides
Seal Beach, CA

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:37AMSunset 6:54PM Sunday September 19, 2021 7:26 AM PDT (14:26 UTC) Moonrise 6:40PMMoonset 5:11AM 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- 208 Am Pdt Sun Sep 19 2021
Today..Winds variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 7 seconds and S 2 ft at 14 seconds. Patchy fog in the morning.
Tonight..SW winds 10 to 15 kt, becoming se 5 to 10 kt after midnight. Wind waves 2 ft or less. W swell 3 to 5 ft at 9 seconds. Patchy fog after midnight.
Mon..Winds variable 10 kt or less. Wind waves 2 ft or less. W swell 3 to 4 ft at 9 seconds. Patchy fog in the morning.
Mon night..Winds variable 10 kt or less, becoming se 5 to 10 kt after midnight. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 10 seconds and S 2 ft at 13 seconds. Patchy fog after midnight.
Tue..S winds 5 to 10 kt. Wind waves 2 ft or less. Mixed swell W 2 ft at 12 seconds and S 2 ft at 13 seconds. Patchy fog in the morning.
Tue night..W winds 5 to 10 kt. Wind waves 2 ft or less. Mixed swell W 2 ft at 12 seconds and S 2 ft at 13 seconds. Patchy fog after midnight.
Wed..NW winds 10 to 15 kt. Wind waves 1 to 3 ft. Mixed swell W 2 to 4 ft and S 2 ft. Patchy fog.
Thu..W winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 to 4 ft and S 2 ft. Patchy fog.
PZZ600 208 Am Pdt Sun Sep 19 2021
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 07z, or 12 am pdt, a 1026 mb surface high was centered 1000 nm W of point conception and a 1000 mb thermal low was over nevada. The high will expand into oregon today then into the great basin Monday and Tuesday.


7 Day Forecast for Marine Location Near Seal Beach, CA
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location: 33.74, -118.12     debug


Area Discussion for - Los Angeles/Oxnard, CA
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FXUS66 KLOX 191147 AAA AFDLOX

Area Forecast Discussion . UPDATED National Weather Service Los Angeles/Oxnard CA 447 AM PDT Sun Sep 19 2021

updated aviation discussion

SYNOPSIS. 18/814 PM.

Below normal temperatures are expected through the weekend, with low clouds and fog over most coastal and valley areas. Gusty north winds are expected later Sunday over Santa Barbara County as well as northern Los Angeles County. Breezy offshore flow will form Monday and Tuesday. Warmer and drier conditions with fewer marine layer clouds will result Monday and last through the middle of the week

SHORT TERM (TDY-TUE). 19/307 AM.

Decent north push occuring over the area. The north flow has filled the Central Coast and the interior SLO vly with low clouds, but at the same time has prevented much of any low clouds south of Pt Conception. High temperatures will cool across the interior as the north flow brings in cooler air from the interior. But the north flow will bring a substantial 3 to 6 degree warm up over the coasts and vlys (except for the San Gabriel Vly and LGB area which will not feel the effects and will cool a few degrees). Gusty west to northwest winds will likely occur this afternoon and evening across the Antelope Valley and Interstate 5 corridor.

The sundowner winds are expected to strengthen this evening as both the KSMX-KSBA and KBFL-KSBA gradients are expected to peak around -4 mb. This along with increasing upper level winds will likely generate advisory level gusts across most of the SBA south coast with the strongest gust (50 mph) near Gaviota/Refugio.

Big time warming slated for Monday. Hgts will rise to 591 dam as an upper high pushes in from the SW. 2 to 3 mb of offshore flow in the morning will keep the marine layer at bay and will also delay or eliminate the sea breeze. Not expecting advisory level winds but there should be 15 to 25 mph NE canyon winds across the LA/VTA county area in the morning. The rising hgts, abundant sunshine and offshore flow will all combine to bring 8 to 12 degrees of warming to the area. The only exception will be the SBA south coast where there will be cooling due the lack of north winds.

Tuesday will be the warmest day for all of the area except for the Central Coast and the SBA south coast. The day will start off with low clouds across the Central Coast and perhaps the Long Beach/Torrance area as well as easterly winds across the most of LA/VTA counties and eastern SBA county. The marine layer will bring double digit cooling to the Central Coast but the east flow will be 2 to 4 degrees of warming to most of LA/VTA counties as well as the interior SLO and SBA counties. Aside from the Central Coast and SBA south coast which will be 2 or 3 degrees blo normal the rest of the area will end up 4 to 8 degrees above normal.

LONG TERM (WED-SAT). 19/321 AM.

Wednesday will be a transitional day as the upper high pushes off to the east and a trof arrives from the NW. Hgts will fall slowly through the day but will still end up above normal at 591 dam. There will be increasing onshore flow and the marine layer stratus should return to the near shore areas (Hgts start out at 594 dam which will smoosh the marine to under 600 ft) Most of the SLO and SBA counties will cool as the hgts fall. There will likely be no change or even a little warming for areas south of Pt Conception.

Two days of widespread cooling are expected on Thursday and Friday as an upper-level trof, or even a cutoff low (EC), moves down the west coast to around San Francisco on Thursday. It moves west and deepens briefly on Friday before shooting off to the northeast. Lower heights and more onshore flow will bring more stratus to the coasts and some of the lower valleys. Max temps will fall each day.

The EC and GFS are massively out of sync on Saturday. The EC forecasts an upper low while the GFS has an upper high. The ensembles are all over the place as well but seem to slightly favor the warmer GFS (but most are cooler than the deterministic GFS soln) The forecast has a little warming trend but really do not have much confidence in the forecast and expect to see a different set of solutions in 24 hours.

AVIATION. 19/1146Z.

At 1100Z at KLAX, the marine layer was near 1000 feet deep. The top of the inversion was 2500 feet with a temperature of 20 C.

Moderate confidence overall for the 12Z TAFs at KPRB, KSMX, KSMO, KLAX and KLGB. Low clouds and IFR/MVFR cigs will affect these airfields this morning. Low clouds and IFR conditions are expected at KSMX this evening but offshore flow should clear the low clouds away by 08Z tonight. For KLAX and KLGB, low clouds are forecast to move back in late tonight. The timing of the onset and/or dissipation of the low clouds may be off +/- an hour or two. Otherwise, VFR conditions can be expected.

For the remainder of the airfields,there is generally hi confidence in the 12Z TAFS with VFR conditions expected to prevail thru the TAF period. Gusty W to NW winds will affect KWJF and KPMD for much of the TAF period.

KLAX . Moderate confidence overall in the 12Z TAF. MVFR cigs will affect the airfield from TAF issuance time until about 17Z, then again from about 11Z to 17Z Mon. The timing of the dissipation and onset of these conditions may be off +/- an hour or so. Otherwise, VFR conditions should prevail.

KBUR . Hi confidence in the 12Z TAF with VFR conditions expected thru the TAF period.

MARINE. 19/131 AM.

Northwest winds will continue to increase from the Central Coast to San Nicolas Island through today, with Small Craft Advisory (SCA) conditions expected over the outer waters through Monday evening, and over the western portion of the Santa Barbara Channel and inner waters N of Point Sal this afternoon and this evening. Widespread steep and choppy seas will result from these winds over much of the coastal waters. Much lighter winds and lowering seas are likely Monday and Tuesday. There is a 10 percent chance of 15-20 KT Santa Ana winds affecting the coastal waters south of Ventura on Monday or Tuesday. If these winds form, high confidence that they will NOT affect Catalina. Winds and seas should remain below SCA levels Wednesday and Thursday. Dense fog and low visibilities are possible Monday through Wednesday.

LOX WATCHES/WARNINGS/ADVISORIES. CA . NONE. PZ . Small Craft Advisory in effect from 3 PM this afternoon to 11 PM PDT this evening for zones 645-650. (See LAXMWWLOX). Small Craft Advisory in effect until 3 PM PDT Monday for zones 670-673-676. (See LAXMWWLOX).

.HAZARD POTENTIAL OUTLOOK (TUE-SAT).

Elevated fire weather conditions are expected through Tuesday with dry air and gusty offshore flow. Dense fog is possible over coastal areas on through Wednesday.



PUBLIC . Rorke AVIATION . Sirard MARINE . Sirard SYNOPSIS . RK

weather.gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PRJC1 4 mi57 min ESE 1 G 1.9
46256 5 mi31 min 62°F3 ft
PFXC1 5 mi57 min Calm G 1 60°F
PFDC1 6 mi63 min Calm G 1.9
PSXC1 6 mi57 min SE 1.9 G 1.9
AGXC1 7 mi75 min Calm G 0 61°F 1013.3 hPa
BAXC1 7 mi69 min Calm G 0
OHBC1 - 9410660 - Los Angeles, CA 8 mi57 min 62°F1015.6 hPa
PXAC1 8 mi63 min Calm G 1
46253 12 mi31 min 65°F3 ft
46222 - San Pedro, CA (092) 13 mi31 min 64°F3 ft
ICAC1 - 9410840 - Santa Monica Pier 27 mi57 min NNE 4.1 G 5.1 61°F 62°F1015.7 hPa
46221 - Santa Monica Bay, CA (028) 29 mi31 min 68°F3 ft
46268 31 mi57 min 59°F 64°F2 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 49 mi37 min Calm G 1.9 63°F 66°F4 ft1014.9 hPa60°F

Wind History for Los Angeles Pier J, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Los Alamitos Army Airfield, CA5 mi29 minN 010.00 miShallow Fog55°F55°F100%1015.9 hPa
Long Beach, Long Beach Airport, CA6 mi34 minN 07.00 miPartly Cloudy58°F55°F90%1015.6 hPa
Fullerton, Fullerton Municipal Airport, CA12 mi34 minN 010.00 miOvercast59°F54°F83%1015.4 hPa
John Wayne-Orange County Airport, CA14 mi34 minN 08.00 miOvercast63°F56°F78%1015.5 hPa
Hawthorne, Hawthorne Municipal Airport, CA18 mi34 minN 08.00 miFair60°F54°F80%1015.4 hPa
Los Angeles, Los Angeles International Airport, CA20 mi34 minSE 57.00 miMostly Cloudy61°F56°F84%1015.3 hPa
Los Angeles / USC Campus Downtown, CA21 mi35 minN 07.00 miOvercast61°F56°F84%1015.1 hPa

Link to 5 minute data for KSLI

Wind History from SLI (wind in knots)
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Last 24hrCalmS3CalmSW3CalmW6SW9S9W9W9W8W8NW7NW6CalmCalmCalmCalmCalmCalmCalmCalmE3Calm
1 day agoSW3CalmSW5S5W8SW6S10S9S8S9SW8S5W4W3NW3NW3W3NW3CalmCalmCalmCalmCalmCalm
2 days agoCalmCalmCalmCalmS8SW7SW9SW8S8S10S8W7W5NW4NW4CalmCalmCalmCalmNW4CalmCalmCalmCalm

Tide / Current Tables for Los Patos (highway bridge), California
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Los Patos (highway bridge)
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Sun -- 04:20 AM PDT     -0.27 feet Low Tide
Sun -- 05:11 AM PDT     Moonset
Sun -- 06:38 AM PDT     Sunrise
Sun -- 10:28 AM PDT     4.25 feet High Tide
Sun -- 04:15 PM PDT     0.79 feet Low Tide
Sun -- 06:39 PM PDT     Moonrise
Sun -- 06:52 PM PDT     Sunset
Sun -- 10:05 PM PDT     5.05 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.52.31.10.2-0.2-0.10.51.62.73.74.24.23.72.81.91.20.811.62.73.84.754.8

Tide / Current Tables for Long Beach, Middle Harbor, California
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Long Beach
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Sun -- 03:08 AM PDT     -0.45 feet Low Tide
Sun -- 05:11 AM PDT     Moonset
Sun -- 06:39 AM PDT     Sunrise
Sun -- 09:27 AM PDT     5.17 feet High Tide
Sun -- 03:03 PM PDT     1.33 feet Low Tide
Sun -- 06:40 PM PDT     Moonrise
Sun -- 06:53 PM PDT     Sunset
Sun -- 09:04 PM PDT     6.15 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.61.10-0.4-0.20.723.44.55.15.14.53.52.51.71.31.62.43.64.85.86.15.84.9

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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