Monday, September27, 2021
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Marine Weather and Tides
Santa Monica, 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 6:44AMSunset 6:46PM Sunday September 26, 2021 11:55 PM PDT (06:55 UTC) Moonrise 10:12PMMoonset 12:03PM Illumination 67% Phase: Waning Gibbous; Moon at 21 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- 846 Pm Pdt Sun Sep 26 2021
Tonight..W winds 5 to 10 kt late in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 2 ft at 14 seconds and S 2 ft at 17 seconds.
Mon..Winds variable 10 kt or less, becoming sw 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 ft at 13 seconds and S 2 ft at 16 seconds.
Mon night..W winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 6 seconds and S 2 ft at 15 seconds.
Tue..Winds variable 10 kt or less, becoming sw 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 3 ft at 8 seconds and S 2 ft at 15 seconds.
Tue night..W 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 10 seconds.
Wed..SE winds 5 to 10 kt, becoming sw in the afternoon. Wind waves 2 ft or less. W swell 3 to 5 ft at 11 seconds.
Wed night..NW winds 5 to 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 4 ft and S 2 ft.
Thu..NW winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and S 2 ft.
Fri..W winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and S 2 ft. Patchy fog.
PZZ600 846 Pm Pdt Sun Sep 26 2021
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 03z, or 8 pm pdt, a 1019 mb surface high was centered around 600 nm west of point conception, and a 1010 mb thermal low was over northern baja. A northerly surface gradient will tighten across the coastal waters through Tuesday with possible gales developing over the outer coastal waters Tuesday afternoon and evening.


7 Day Forecast for Marine Location Near Santa Monica, CA
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location: 34.01, -118.52     debug


Area Discussion for - Los Angeles/Oxnard, CA
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FXUS66 KLOX 270632 AAA AFDLOX

Area Forecast Discussion . UPDATED National Weather Service Los Angeles/Oxnard CA 1132 PM PDT Sun Sep 26 2021

SYNOPSIS. 26/216 PM.

A deepening marine layer and strengthening onshore flow will bring a cooling trend to the region through Tuesday. Low clouds will likely cover all the coasts and valleys each night through morning. A significant warming trend with much less marine layer is expected Wednesday through next weekend as offshore flow returns pushing temperatures above normal in most areas.

SHORT TERM (SUN-WED). 26/836 PM.

***UPDATE***

The marine layer deepened substantially last night, with clouds reaching deep into the coastal slopes and the Santa Clarita Valley by this morning. Clouds were sluggish to clear today, in part due to the strong onshore flow and reduced surface heating. The upper level low slowly pushed northeast over Arizona today, keeping northeast flow for the area. This flow pattern keeps smoke from the southern Sierra Mountain fires over the region. Otherwise, it was a fairly quiet day, with still cooler temperatures especially for areas experiencing afternoon stratus and upper level smoke. Westerly winds were gusty through the interior.

Tonight, stratus has moved into the coastal plains from Santa Barbara southward. LAX to DAG pressure gradients are up to 7.3 mb, about 3 mb stronger than last night. The marine layer remains deep, just over 2,000 feet. Therefore, expecting clouds to easily reach the coastal slopes again. With the strong onshore push, there is a slight chance for areas of sprinkles along the coastal slopes, where the marine layer clouds experience the most lift. Will wait for further guidance before adding it to the forecast.

Monday, the region remains stuck between the upper level low to the east and the approaching trough to the northwest. Flow shifts to the northwest as an upper level trough passes through, which is a step in the right direction to clearing out the smoke. Expecting similar temperatures as today, but some interior areas may be a few degrees warmer. Adjusting temperatures lower near the coast, to be more in line with what happened today.


***From Previous Discussion***

A trough and decaying cold front will move through the west coast Tuesday, likely causing some additional marine layer deepening and possibly even some morning drizzle. Another slow clearing day for southern areas but better clearing possible for the Central Coast depending on the timing of the frontal passage. Significant cooling for far interior areas due to the cold advection but not much change for coast and coastal valleys from Monday. Increasing northwest flow will bring breezy winds to the western areas by afternoon with advisory level Sundowners possible for southern Santa Barbara County Tuesday evening.

Marine layer expected to clear out with the cold advection and northwest flow down to around SB or western Ventura County by Tuesday afternoon and evening but still expecting a deep marine layer for LA County Wednesday morning before the inversion weakens there. Another cool-ish and locally breezy day Wednesday following the frontal passage but some warming expected due to less marine layer clouds and lighter onshore flow. In fact, light northeast winds are expected to develop across the interior by late morning.

LONG TERM (THU-SUN). 26/213 PM.

The latter half of the week will be a complete opposite pattern from the first half. Rising heights along with much weaker onshore flow (and perhaps even lightly offshore) will result in significantly warmer temperatures under mostly clear skies. It's still a little ways out and models are still at odds but looking at the ensembles it has a similar look and feel to the pattern from early last week when there was brief period of light offshore flow and temperatures rose up into the 90s for some inland coastal areas and over 100 in some of the valleys. For this reason the forecast from Thu-Sun has been adjusted up from the standard NBM forecast highs and closer to (though still at least a few degrees below) what we saw last week. If models stick with the offshore pattern temperatures for coast and valleys will likely need some additional boosting. Also of note is the ECMWF ensemble forecast of almost 40mph of northeast wind in the Santa Clarita Valley on Thursday which is 5-10 mph than earlier forecasts had shown.

Thursday appears to have the best support aloft for offshore winds but light offshore flow expected to continue into the weekend. This should keep temperatures well above normal for coast and valleys and bring temps back up to normal for far interior areas by late in the week. May start to see some marine layer returning to coastal areas by the weekend depending on how the gradients hold up.

AVIATION. 27/0631Z.

At 05Z, the marine layer depth was around 3000 feet deep at KLAX. The top of the inversion was near 4500 feet with a temperature near 20 degrees Celsius.

Predominantly MVFR conditions will linger across most coastal terminals through at least 17Z. There is a moderate-to-high (40-60 percent) chance of IFR conditions at terminals north of Point Conception and a lesser chance of LIFR conditions. Coastal terminals will likely struggle to clear again. There is a moderate (30 to 50 percent) chance of valley terminals remaining in MVFR conditions into the afternoon hours. There is a low-to-moderate (20 to 30 percent) chance of VFR conditions developing between 20Z and 02Z.

KLAX . MVFR conditions will linger through the period. There is a 20 percent chance of VFR conditions developing between 20Z and 02Z. There is a 20 percent chance of IFR conditions in drizzle between 10Z and 16Z.

KBUR . MVFR conditions will linger through at least 18Z. There is a 20 percent chance of IFR conditions in drizzle between 10Z and 16Z. There is a 50 percent chance of MVFR conditions lingering past 20Z until as late as 23Z.

MARINE. 26/825 PM.

For the outer waters, moderate to high confidence in the current forecast. Winds and seas will remain below Small Craft Advisory (SCA) levels tonight then NW winds will strengthen through the day on Monday. High confidence in at least SCA level winds Monday morning for the northern outer waters and by the afternoon for the southern portion from Point Conception to San Nicolas Island through Wednesday night. Moderate confidence in winds strengthening to Gale force, on Tuesday, and have issued a Gale Watch for Tuesday afternoon through late Tuesday night. Along with gusty winds there will also be steep, choppy seas at times Monday night through Wednesday.

For the inner waters N of Point Sal, moderate to high confidence in the current forecast. SCA level wind gusts and seas are expected mainly afternoons and evenings from Monday through Wednesday.

For the inner waters S of Point Conception, moderate to high confidence in the current forecast. Winds and seas are expected to largely remain below SCA levels through Friday, except for a 50% chance of SCA level wind gusts Monday evening for the western Santa Barbara Channel, then increasing to 60% chance for Tuesday.

LOX WATCHES/WARNINGS/ADVISORIES. CA . NONE. PZ . Small Craft Advisory in effect from 3 PM Monday to 3 AM PDT Wednesday for zone 645. (See LAXMWWLOX). Small Craft Advisory in effect from 9 AM Monday to 3 PM PDT Tuesday for zone 670. (See LAXMWWLOX). Gale Watch in effect from Tuesday afternoon through late Tuesday night for zones 670-673-676. (See LAXMWWLOX). Small Craft Advisory in effect from 3 PM Monday to 3 PM PDT Tuesday for zones 673-676. (See LAXMWWLOX).

.HAZARD POTENTIAL OUTLOOK (WED-SUN).

Gusty northeast winds are possible Thursday across Los Angeles and Ventura Counties.



PUBLIC . Phillips/MW AVIATION . Hall MARINE . Sirard/Stewart SYNOPSIS . MW

weather.gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ICAC1 - 9410840 - Santa Monica Pier 1 mi55 min SW 4.1 G 4.1 63°F 66°F1017.7 hPa (+0.9)
46268 3 mi85 min 63°F 65°F2 ft
46221 - Santa Monica Bay, CA (028) 12 mi59 min 67°F3 ft
BAXC1 22 mi61 min SSW 4.1 G 5.1
PXAC1 22 mi61 min SSW 2.9 G 4.1
PSXC1 23 mi55 min SW 4.1 G 5.1
OHBC1 - 9410660 - Los Angeles, CA 24 mi55 min 64°F1017.5 hPa (+0.6)
PFDC1 24 mi67 min SW 5.1 G 7
PFXC1 24 mi55 min WSW 2.9 G 5.1 63°F
AGXC1 25 mi67 min W 5.1 G 7 64°F 1015 hPa
PRJC1 26 mi55 min W 7 G 8
46256 27 mi59 min 62°F4 ft
46222 - San Pedro, CA (092) 29 mi59 min 64°F2 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 33 mi35 min Calm G 1.9 63°F 66°F1017.2 hPa57°F
46253 35 mi59 min 64°F3 ft

Wind History for Santa Monica, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Santa Monica, Santa Monica Municipal Airport, CA4 mi64 minWSW 310.00 miOvercast63°F58°F84%1017.4 hPa
Los Angeles, Los Angeles International Airport, CA8 mi62 minSSW 510.00 miOvercast64°F56°F75%1017.2 hPa
Hawthorne, Hawthorne Municipal Airport, CA11 mi62 minWSW 410.00 miOvercast64°F57°F78%1017.3 hPa
Los Angeles / USC Campus Downtown, CA13 mi63 minW 310.00 miOvercast63°F57°F81%1016.9 hPa
Van Nuys, Van Nuys Airport, CA14 mi64 minSE 310.00 miOvercast62°F57°F84%1016.7 hPa
Burbank - Bob Hope Airport, CA16 mi62 minSSW 47.00 miOvercast62°F56°F80%1016.3 hPa
Torrance, Zamperini Field Airport, CA18 mi4.1 hrsN 00.00 miOvercast63°F57°F83%1016.6 hPa
Los Angeles, Whiteman Airport, CA18 mi4.1 hrsESE 410.00 miClear63°F57°F83%1017.3 hPa
Long Beach, Long Beach Airport, CA23 mi62 minWSW 410.00 miOvercast65°F57°F76%1017.1 hPa

Link to 5 minute data for KSMO

Wind History from SMO (wind in knots)
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Last 24hrW3CalmW3NW3NW3SW3NW3NW5CalmCalmCalmCalmSW4S7SW85SW6SW6W73SW5SW4S3SW3
1 day agoCalmCalmSW4CalmS3CalmCalmCalmCalmS6SW56SW6SW9SW7SW11SW10SW8SW9SW7SW5SW55SW5
2 days agoSW3CalmCalmSW5SW3CalmCalmCalmCalmS3CalmSW6SW6SW7SW9W6SW9SW3W4S9CalmCalmSW5SW4

Tide / Current Tables for Santa Monica, Municipal Pier, California (2)
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Santa Monica
Click for Map
Mon -- 03:26 AM PDT     2.95 feet High Tide
Mon -- 05:44 AM PDT     2.99 feet Low Tide
Mon -- 06:45 AM PDT     Sunrise
Mon -- 01:00 PM PDT     Moonset
Mon -- 01:11 PM PDT     4.52 feet High Tide
Mon -- 06:43 PM PDT     Sunset
Mon -- 09:58 PM PDT     1.41 feet Low Tide
Mon -- 10:54 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.42.72.92.93333.13.23.53.84.14.44.54.54.23.83.32.72.21.81.51.41.5

Tide / Current Tables for El Segundo, Santa Monica Bay, California
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El Segundo
Click for Map
Mon -- 03:36 AM PDT     2.93 feet High Tide
Mon -- 05:51 AM PDT     2.87 feet Low Tide
Mon -- 06:45 AM PDT     Sunrise
Mon -- 12:59 PM PDT     Moonset
Mon -- 01:21 PM PDT     4.44 feet High Tide
Mon -- 06:42 PM PDT     Sunset
Mon -- 10:05 PM PDT     1.35 feet Low Tide
Mon -- 10:54 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.32.62.82.92.92.92.92.93.13.33.744.34.44.44.23.83.32.72.21.71.51.41.4

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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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