Monday, June1, 2020
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Marine Weather and Tides
South Monrovia Island, CA

Version 3.4
NOTICE
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 5:39AMSunset 8:00PM Monday June 1, 2020 8:44 PM PDT (03:44 UTC) Moonrise 3:36PMMoonset 3:01AM Illumination 84% Phase: Waxing Gibbous; Moon at 11 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- 751 Pm Pdt Mon Jun 1 2020
.small craft advisory in effect until 3 am pdt Tuesday...
Tonight..NW winds 15 to 25 kt, becoming W 5 to 10 kt after midnight. Combined seas 4 to 5 ft dominant period 6 seconds.
Tue..NW winds 5 to 10 kt, becoming W 10 to 20 kt in the afternoon. Wind waves 1 to 3 ft. Mixed swell W 2 to 3 ft at 6 seconds and S 2 ft at 15 seconds.
Tue night..NW winds 10 to 15 kt, becoming 5 to 10 kt after midnight. Wind waves 2 ft. Mixed swell W 2 ft at 6 seconds and S 2 ft at 15 seconds.
Wed..NW winds 5 to 10 kt, becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft. Mixed swell W 2 ft at 6 seconds and S 2 ft at 14 seconds.
Wed night..W winds 10 to 15 kt, becoming se 5 to 10 kt after midnight. Wind waves 2 ft. W swell 3 to 4 ft at 6 seconds. Patchy fog after midnight.
Thu..SE winds 10 to 15 kt, becoming S 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 8 seconds and S 3 ft at 17 seconds. Patchy fog in the morning.
Thu night..SW winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. S swell 3 ft at 17 seconds.
Fri..SW winds 5 to 10 kt. Wind waves 2 ft or less. Mixed swell W 2 ft and S 3 ft.
Sat..W winds 15 to 25 kt. Combined seas 4 to 6 ft.
PZZ600 751 Pm Pdt Mon Jun 1 2020
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 02z, or 7 pm pdt, a 1028 mb high pressure system was centered about 650 nm northwest of point conception and a 1004 mb thermal low was centered near the california-arizona border.


7 Day Forecast for Marine Location Near South Monrovia Island, CA
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location: 34.14, -118     debug


Area Discussion for - Los Angeles/Oxnard, CA
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FXUS66 KLOX 020109 AFDLOX

Area Forecast Discussion . UPDATED National Weather Service Los Angeles/Oxnard CA 609 PM PDT Mon Jun 1 2020

Updated Aviation Section

SYNOPSIS. 01/158 PM.

Skies will be partly to mostly cloudy through Wednesday and then partly cloudy for the rest of the week. Afternoon temperatures will heat up quite a bit through Wednesday then cool to near to slightly below normal Friday and Saturday. Gusty northwest winds expected for the weekend and warming temperatures into early next week.

SHORT TERM (TDY-THU). 01/136 PM.

An upper low about 600 miles southwest of LAX continues to spin and send high clouds our way. Expect this to continue through at least Tuesday night, after which models indicate decreasing humidities aloft and likely more sunshine. Until then expect periods of cloudy skies alternating with periods of decent sunshine.

Also over the next couple days a high pressure ridge to our east will shift slightly west and warm the air mass. This coupled with weakening onshore flow and thinning clouds aloft should lead to a sizable increase in daytime temperatures for most areas, peaking Wednesday. Valleys could see 100+ and inland coastal zones will get close to 90. Might be close to heat advisory criteria for inland areas but will hold off another day to get a better read on the cloud coverage and strength of the ridge and gradients.

The warm up will quickly reverse Thursday as onshore flow returns and a strong eddy develops. Will likely see low clouds returning to areas south of Pt Conception with slow afternoon clearing and much cooler temps.

LONG TERM (FRI-MON). 01/154 PM.

The eddy circulation will continue into Friday as the upper low moves onshore somewhere between Pt Conception and the MX border. The marine layer will likely deepen to 3000-5000' and clouds pushing well up the south facing coastal slopes. This pattern often results in morning drizzle for many areas south of Pt Conception but either way expect additional cooling with highs dropping a few degrees below normal in most areas and very slow clearing.

The upper low will move east over the weekend and models are showing a pretty strong northwest flow developing behind it. If current gradients hold winds would easily be advisory level in srn SB County, the I5 corridor and the Antelope Valley, and near advisory for the Central Coast.

A broad upper level trough will develop along the coast late in the weekend and continue through early next week maintaining gusty west to northwest winds in the same areas. Temps will climb back to normal levels by Sunday or Monday. Mostly clear skies through the period except possibly some marine layer clouds in coastal LA County.

Looks like temperatures will bounce back up to above normal levels for the latter half of next week as high pressure returns and onshore flow weakens.

AVIATION. 02/0107Z.

At 23Z, the marine layer depth was around 600 feet deep at KLAX. The top of the inversion was near 1300 feet with a temperature near 25 degrees Celsius.

Moderate-to-high confidence in the current forecast. Less confidence in flight categories for coastal terminals. Higher confidence for timing for coastal terminals and in timing and flight categories for terminals away from the coast. There is a chance of LIFR to IFR conditions at coastal terminals highest for coastal terminals north of Point Conception.

KLAX . There is a 30 percent chance of LIFR to IFR conditions between 10Z and 16Z. Otherwise, VFR conditions are expected through the period.

KBUR . VFR conditions are expected through the period. No wind issues are expected at this time.

MARINE. 01/1250 PM.

Gusty west to northwest winds will form by this afternoon and last through tonight over most coastal waters. High confidence that the outer waters from Point Conception to San Nicolas Island will reach Small Craft Advisory (SCA), with low to moderate confidence on if SCA criteria will be met elsewhere. Decided to issue an SCA for the Santa Barbara Channel through the San Pedro Channel anyway as it will be close. A widespread short period swell will dominate the waves as a result. Similar but weaker conditions expected on Tuesday, with a 40 percent chance of low- end SCA from Point Conception to San Nicolas Island. Better confidence in more widespread and stronger SCA level winds on Wednesday, focused from the Central Coast to San Nicolas Island.

LOX WATCHES/WARNINGS/ADVISORIES. CA . NONE. PZ . Small Craft Advisory in effect until 3 AM PDT Tuesday for zones 650-655-673-676. (See LAXMWWLOX).

.HAZARD POTENTIAL OUTLOOK (THU-MON).

Gusty northwest winds are possible in southern SB County and the I5 corridor and Antelope Valley Saturday through Monday.



PUBLIC . MW AVIATION . Hall MARINE . Kittell 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 28 mi57 min WNW 5.1 G 11 66°F 63°F1011.1 hPa
PSXC1 28 mi57 min WNW 12 G 17
BAXC1 29 mi111 min SSW 17 G 19
PFXC1 29 mi57 min WNW 13 G 16
PRJC1 30 mi57 min WNW 8.9 G 12
PXAC1 30 mi111 min WNW 8 G 13
PFDC1 31 mi117 min SW 7 G 8.9
46256 32 mi45 min 57°F3 ft
AGXC1 32 mi111 min WSW 13 G 16
OHBC1 - 9410660 - Los Angeles, CA 32 mi63 min 57°F1011.3 hPa
46221 - Santa Monica Bay, CA (028) 39 mi79 min 61°F5 ft
46222 - San Pedro, CA (092) 40 mi52 min 66°F4 ft
46253 40 mi47 min 67°F5 ft

Wind History for Los Angeles Pier S, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
El Monte, CA4 mi60 minSSW 910.00 miPartly Cloudy75°F50°F41%1010.8 hPa
Brackett Field Airport, CA12 mi4 hrsWSW 810.00 miFair81°F53°F39%1011.8 hPa
Los Angeles / USC Campus Downtown, CA17 mi53 minN 010.00 miFair74°F52°F46%1010.1 hPa
Fullerton, Fullerton Municipal Airport, CA19 mi52 minWSW 310.00 miFair74°F50°F43%1010.7 hPa
Burbank - Bob Hope Airport, CA20 mi52 minW 810.00 miFair79°F46°F31%1009.9 hPa
Chino, Chino Airport, CA22 mi52 minWSW 810.00 miFair79°F46°F31%1011.2 hPa
Ontario International Airport, CA22 mi52 minSW 810.00 miOvercast80°F44°F28%1010.2 hPa
Hawthorne, Hawthorne Municipal Airport, CA23 mi52 minW 910.00 miFair71°F51°F49%1010.7 hPa
Long Beach, Long Beach Airport, CA23 mi52 minWNW 1510.00 miOvercast71°F48°F46%1010.6 hPa
Los Angeles, Whiteman Airport, CA23 mi45 minS 510.00 miClear77°F46°F34%1012.9 hPa
Los Alamitos Army Airfield, CA24 mi47 minW 610.00 miMostly Cloudy71°F50°F48%1011.4 hPa

Link to 5 minute data for KEMT

Wind History from EMT (wind in knots)
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Last 24hr----------------------CalmCalmCalm--6--S11S11S9S12S9S7S9
1 day ago----------------------CalmCalmSW5S63SW8SW5S8SW7SW9
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2 days ago----------------------3--S3--3S6SW9
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Tide / Current Tables for Santa Monica, Municipal Pier, California (2)
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Santa Monica
Click for Map
Mon -- 12:49 AM PDT     1.07 feet Low Tide
Mon -- 03:03 AM PDT     Moonset
Mon -- 05:43 AM PDT     Sunrise
Mon -- 06:30 AM PDT     3.98 feet High Tide
Mon -- 12:30 PM PDT     0.53 feet Low Tide
Mon -- 03:38 PM PDT     Moonrise
Mon -- 07:01 PM PDT     5.57 feet High Tide
Mon -- 08:00 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.21.11.422.83.53.93.93.52.71.91.10.60.61.12.13.34.45.35.65.34.53.32.1

Tide / Current Tables for El Segundo, Santa Monica Bay, California
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El Segundo
Click for Map
Mon -- 12:56 AM PDT     1.03 feet Low Tide
Mon -- 03:02 AM PDT     Moonset
Mon -- 05:43 AM PDT     Sunrise
Mon -- 06:40 AM PDT     3.92 feet High Tide
Mon -- 12:37 PM PDT     0.51 feet Low Tide
Mon -- 03:38 PM PDT     Moonrise
Mon -- 07:11 PM PDT     5.44 feet High Tide
Mon -- 08:00 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.211.31.92.63.43.83.93.52.81.91.10.60.511.934.255.45.34.53.42.2

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
Wind Forecast for Los Angeles/Oxnard, CA (23,6,7,8)
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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 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.