Sunday, May20, 2018 L-36.com


Marine Weather and Tides
Seal Beach, CA

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.

Sunrise 5:46AMSunset 7:51PM Sunday May 20, 2018 7:10 AM PDT (14:10 UTC) Moonrise 11:06AMMoonset 12:21AM Illumination 31% Phase: Waxing Crescent; Moon at 6 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- 231 Am Pdt Sun May 20 2018
Today..Winds variable 10 kt or less, becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 2 to 4 ft at 8 seconds.
Tonight..W winds 10 to 15 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. W swell 2 to 4 ft at 8 seconds.
Mon..Winds variable 10 kt or less, becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 3 to 4 ft at 10 seconds.
Mon night..W winds 10 to 20 kt in the evening, becoming variable 10 kt or less. Wind waves 1 to 3 ft. W swell 3 to 4 ft at 9 seconds.
Tue..Winds variable 10 kt or less, becoming W 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 4 ft at 9 seconds and S 2 ft at 18 seconds.
Tue night..W winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 3 ft at 7 seconds and S 3 ft at 18 seconds.
Wed..W winds 5 to 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and S 3 ft.
Thu..W winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 to 4 ft and sw 2 ft.
PZZ600 231 Am Pdt Sun May 20 2018
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 09z...or 2 am pdt...a 1025 mb high was located 600 nm west of point conception and a 1002 mb low was near las vegas.

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 201051
afdlox
area forecast discussion
national weather service los angeles oxnard ca
351 am pdt Sun may 20 2018

Synopsis 19 727 pm.

A trough of low pressure is expected to push into the region by
early next week before shifting eastward. This will support
cooler conditions early next week with drizzle possible across
coasts and valleys south of point conception. There is also a
slight chance of showers or thunderstorms for adjacent interior
areas. Temperatures will likely rebound later in the week.

Short term (tdy-tue) 20 306 am.

South of pt conception a deep marine layer between 3000 and 4000
feet will maintain a persistent low level clouds pattern across
the coast and valleys with only minimal clearing in the late
afternoon through early evening hours. A more typical marine layer
will continue across the central coast and there will be decent
clearing by the early afternoon.

Over the next 72 hours an upper level trof will move push down
into the state from the pac nw. It will turn into a cut off low
late tonight and then spin over SRN ca on Monday. It will then
slowly push off to the east and by Tuesday it will be over the
ca nv border.

The increasing cyclonic flow... Lowering hgts and increasing lift
provided by the approaching upper low will likely bring drizzle to
the coast vlys and coastal slopes on Monday morning. The cool core
of the upper low will be over the area during the afternoon on
Monday and this will bring enough instability to the area to
warrant a slight chc of tstms to the la vta mtns and since the
upper flow patter will push any tstms that form into the antelope
vlys a slight chc exists there as well.

Since the low will be to the east of the area on Tuesday there
will not be enough lift for drizzle but there will still be a
solid marine layer cloud deck across the coasts and vlys. The low
spin some weak PVA around its backside and into the mtns in the
afternoon which might generate a shower or two over the higher
terrain.

The lower than normal hgts, stronger than normal onshore flow and
deeper than normal marine layer will all combine to bring below
normal MAX temps to the entire area on all three days. Monday will
be the coolest day with MAX temps 5 to 10 degrees blo normal with
today and Tuesday coming in 4 to 8 degrees blo normal.

Long term (wed-sat) 20 312 am.

The ec no agrees with the GFS on the extended forecast so the
forecast is not as uncertain as it once was. Both mdls now agree
that an upper low will form in the east pac and then move into
state north of the bay area. This will put so cal in between the
upper low and a ridge over az nm with dry SW flow aloft.

Moderate onshore flow will continue through the period and hgts
will rise which will strengthen the capping inversion. There will
be night through morning low clouds and fog every day.

Max temps will rise slowly in response to the higher hgts. Better
warming, of course, away from the marine layer.

Aviation 20 1050z.

At 1040z, the marine inversion at klax was based around 3000 feet.

The top of the inversion was 4100 feet with a temperature of 16
degrees celsius.

Overall, moderate to high confidence in 12z TAF package. Moderate
confidence in coastal valley tafs. There is a 40% chance that MVFR
cigs may not dissipate late this afternoon. Overnight, high
confidence in return of MVFR cigs, but low confidence in timing.

For desert tafs, high confidence in current forecast.

Klax... Moderate confidence in 12z taf. There is a 30% chance that
MVFR CIGS could dissipate as early as 21z and a 40% chance that
MVFR CIGS do not dissipate at all this afternoon.

Kbur... Moderate confidence in 12z taf. There is a 30% chance that
MVFR CIGS could dissipate as early as 21z and a 40% chance that
MVFR CIGS do not dissipate at all this afternoon.

Marine 20 350 am.

For the outer waters, high confidence in current forecast. Small
craft advisory (sca) level winds and seas will continue through
Monday night. For Tuesday through Thursday, high confidence in
winds and seas remaining below SCA levels.

For the inner waters, moderate confidence in current forecast.

For the waters north of point sal, high confidence in SCA level
winds this afternoon through tonight with a 40% chance of sca
level winds again on Monday afternoon evening. However for Tuesday
through Thursday, winds and seas are expected to remain below sca
levels. For the waters south of point conception, winds and seas
are expected to generally remain below SCA levels through Thursday
although there is a 40% chance of SCA level winds across the
western half of the santa barbara channel both this
afternoon evening and again Monday afternoon evening.

Lox watches warnings advisories
Ca... None.

Pz... Small craft advisory in effect until 3 am pdt Monday for
zones 645-670-673-676. (see laxmwwlox).

Hazard potential outlook (tue-sat)
No significant hazards expected.

Public... Rorke
aviation... Rat
marine... Rat
synopsis... Munroe
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PRJC1 4 mi40 min W 6 G 7
46256 5 mi40 min 60°F3 ft
PFXC1 5 mi40 min WSW 2.9 G 4.1 61°F
PSXC1 6 mi40 min SW 2.9 G 4.1
PFDC1 6 mi40 min SSW 2.9 G 4.1
AGXC1 7 mi40 min WSW 4.1 G 5.1 60°F 1013.6 hPa
BAXC1 7 mi40 min SW 1 G 1.9
PXAC1 8 mi52 min SSE 1 G 1.9
OHBC1 - 9410660 - Los Angeles, CA 8 mi40 min 61°F1013.5 hPa
46253 12 mi40 min 63°F3 ft
46222 - San Pedro, CA (092) 13 mi40 min 62°F3 ft
ICAC1 - 9410840 - Santa Monica Pier 27 mi40 min WSW 2.9 G 2.9 59°F 58°F1013.5 hPa
46221 - Santa Monica Bay, CA (028) 28 mi40 min 60°F3 ft
46262 47 mi40 min 63°F4 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 49 mi30 min NW 1.9 G 5.8 1013.2 hPa

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 mi72 minN 010.00 miOvercast61°F54°F79%1013.1 hPa
Long Beach, Long Beach Airport, CA6 mi77 minNW 310.00 miOvercast61°F54°F78%1013 hPa
Fullerton, Fullerton Municipal Airport, CA12 mi77 minN 010.00 miOvercast62°F55°F78%1012.5 hPa
Torrance, Zamperini Field Airport, CA12 mi18 minN 010.00 miOvercast61°F53°F77%1013.5 hPa
John Wayne-Orange County Airport, CA14 mi77 minN 06.00 miFog/Mist61°F57°F87%1012.9 hPa
Hawthorne, Hawthorne Municipal Airport, CA18 mi77 minWSW 510.00 miOvercast60°F54°F80%1013.3 hPa
Los Angeles, Los Angeles International Airport, CA20 mi77 minSW 79.00 miOvercast60°F55°F84%1013.1 hPa
Los Angeles / USC Campus Downtown, CA21 mi83 minW 310.00 miOvercast61°F54°F78%1012.7 hPa

Wind History from SLI (wind in knots)
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Last 24hrE4SE5SE4W3SW7S3S6S9SW9SW11SW8S7SW7S4S4S4SW5W3W3CalmCalmCalmCalmCalm
1 day agoS5S5S9S8S8SW10S9SW9SW7S6SW11SW10SW8W4CalmCalmCalmCalmCalmCalmSW3CalmCalmE4
2 days agoCalmSE3S10S6S12S10
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S9SW8S8S4SW4SW3CalmS4CalmS5SW4S4SW4S3S6

Tide / Current Tables for Los Patos (highway bridge), California
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Los Patos (highway bridge)
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Sun -- 12:20 AM PDT     Moonset
Sun -- 02:00 AM PDT     4.49 feet High Tide
Sun -- 05:48 AM PDT     Sunrise
Sun -- 09:46 AM PDT     -0.34 feet Low Tide
Sun -- 11:05 AM PDT     Moonrise
Sun -- 04:47 PM PDT     3.20 feet High Tide
Sun -- 07:49 PM PDT     Sunset
Sun -- 09:37 PM PDT     1.61 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.74.34.54.33.83210.3-0.2-0.3-00.61.32.12.73.13.22.92.521.71.61.9

Tide / Current Tables for Long Beach, Terminal Island, California
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Long Beach
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Sun -- 12:21 AM PDT     Moonset
Sun -- 12:58 AM PDT     5.45 feet High Tide
Sun -- 05:48 AM PDT     Sunrise
Sun -- 08:34 AM PDT     -0.61 feet Low Tide
Sun -- 11:06 AM PDT     Moonrise
Sun -- 03:48 PM PDT     3.84 feet High Tide
Sun -- 07:50 PM PDT     Sunset
Sun -- 08:24 PM PDT     2.70 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.25.45.24.53.42.210-0.5-0.6-0.10.61.62.63.33.73.83.63.32.92.72.733.5

Weather Map and Satellite Images
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GOES 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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Wind Forecast for Los Angeles/Oxnard, CA (10,2,3,4)
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Ground Weather Radar Station Santa Ana Mtns, CA
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Disclaimer:
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.