Saturday, April21, 2018 L-36.com


Marine Weather and Tides
Manhattan 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 6:12AMSunset 7:31PM Saturday April 21, 2018 2:49 AM PDT (09:49 UTC) Moonrise 11:08AMMoonset 12:37AM Illumination 35% 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- 817 Pm Pdt Fri Apr 20 2018
Tonight..W winds 10 to 15 kt, becoming se 5 to 10 kt after midnight. Wind waves 1 to 3 ft, becoming 2 ft or less. W swell 3 to 4 ft at 8 seconds. Patchy fog after midnight.
Sat..SE winds 5 to 10 kt, becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 10 seconds and S 2 ft at 17 seconds. Patchy fog in the morning.
Sat night..W winds 10 to 15 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 10 seconds and S 2 ft at 16 seconds. Patchy fog after midnight.
Sun..S winds 5 to 10 kt, becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 ft at 10 seconds and S 2 ft at 15 seconds. Patchy fog in the morning.
Sun night..W winds 10 to 15 kt, becoming se 5 to 10 kt after midnight. Wind waves 2 ft or less. Mixed swell W 2 ft at 14 seconds and S 2 ft at 15 seconds. Patchy fog after midnight.
Mon..SE winds 5 to 10 kt, becoming sw 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 ft at 14 seconds and S 2 ft at 14 seconds. Patchy fog in the morning.
Mon night..SW winds 10 to 15 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. S swell 2 ft at 13 seconds. Patchy fog after midnight.
Tue..SW winds 5 to 10 kt. Wind waves 2 ft or less. S swell 2 ft. Patchy fog.
Wed..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 817 Pm Pdt Fri Apr 20 2018
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 1033 mb surface high was centered 600 nm west of eureka, with a weak inverted trough along the sw california coast. The high will push inland over the pac nw through the weekend while thermal low pres sets up over the four corners region.

7 Day Forecast for Marine Location Near Manhattan Beach city, CA
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location: 33.88, -118.41     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 210751
afdlox
area forecast discussion
national weather service los angeles oxnard ca
1251 am pdt Sat apr 21 2018

Synopsis 20 508 pm.

A high pressure system will bring above normal temperatures
away from the coast through Monday. Closer to the coast, a
coastal eddy will usher in night through morning low clouds and
fog. A low pressure system should arrive Tuesday for increasing
onshore flow and a cooling trend through the remainder of the work
week.

Short term (sat-tue) 20 909 pm.

The latest satellite imagery shows an upper-level ridge of high
pressure building into central california this evening and a
farther upstream trough about 400 miles west of seattle. A weak
upper-level trough sits near 27n and 128w, or about 700 miles
southwest of los angeles.

Ridging aloft will remain in place through Saturday and onshore
flow will weaken through Saturday, possibly turning weakly
offshore later tonight. A warming trend will take place on
Saturday, especially away from the coast. Much of the warming near
the coast will depend how much marine intrusion takes place into
Saturday morning. There is a chance that temperatures near the
beaches could be a tad too warm Saturday. Fog product imagery
does not look particularly impressive, but some semblance of
marine layer stratus is present giving some confidence in the
overall stratus forecast through Saturday.

The trough of low pressure to the southwest of the area will move
northeast into the southern california on Saturday afternoon,
while the trough to the northwest phases and fills in behind it.

A cooling trend should develop for Sunday and Monday. Below
normal temperatures and a persistent marine layer should remain
in place for early next week.

*** from previous discussion ***

Long term (wed-sat) 20 158 pm.

Models seem to have settled down on a solution for next week,
keeping the upper low well west of the coast through at least the
middle of the week, then lifting it northeast into the pac nw
Friday night into Saturday. This will keep some ridging along the
coast going through mid week at least, however onshore flow
strengthens slightly each day. So it looks like the marine layer
should be a consistent feature for coast and coastal valleys next
week with temps near to slightly above normal. A strong onshore
push will likely cool temps to below normal by the end of the week
with some gusty winds in the antelope valley.

Aviation 21 0751z.

At 06z, the marine layer depth was around 800 feet deep at klax.

The top of the inversion was near 2300 feet with a temperature
of 18 degrees celsius.

Expect areas of stratus with low MVFR to high ifr conds across the
central coast and santa ynez valley overnight. Skies are expected
to clear late tonight or very early Sat as flow turns offshore.

Areas of low clouds with low MVFR high ifr conds are expected to
develop across the l.A. County coast overnight and linger thru mid
morning sat. There is a chance that clouds will push into coastal
sections of vtu county.

Klax... Moderate confidence in the 06z taf. There is a 20-30%
chance that conds will remainVFR through Sat evening.

Kbur... High confidence inVFR conditions through the period.

There is a 10-20% high ifr to low MVFR conditions between 13z and
16z.

Marine 20 745 pm.

Low confidence in the fog forecast, but dense fog is possible now
through the weekend. High confidence in widespread short period
seas tonight, caused by gusty northwest winds over the outer
waters. The seas should
high confidence in small craft advisory (sca) winds from the
central coast to san nicolas island through tonight, with weaker
and more borderline SCA over the outer waters through the
weekend. Over the inner waters from the santa barbara channel to
the san pedro channel, SE winds will form each morning, up to 15
kt through the passages and channels, with accompanying choppy
seas. Typical onshore winds expected in the afternoon, with near-
sca west winds in the far western santa barbara channel.

Lox watches warnings advisories
Ca... None.

Pz... Small craft advisory in effect until 3 am pdt early this
morning for zones 645-676. (see laxmwwlox).

Small craft advisory in effect until 3 am pdt Sunday for
zones 670-673. (see laxmwwlox).

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

Public... Hall mw
aviation... Db
marine... Kittell smith
synopsis... Stu hall
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ICAC1 - 9410840 - Santa Monica Pier 10 mi50 min Calm G 2.9 56°F 59°F1018.3 hPa (-1.2)
PXAC1 11 mi50 min W 2.9 G 2.9
PSXC1 12 mi50 min WNW 2.9 G 2.9
BAXC1 12 mi50 min WNW 2.9 G 2.9
46221 - Santa Monica Bay, CA (028) 12 mi50 min 57°F3 ft
PFDC1 13 mi50 min SSW 4.1 G 5.1
OHBC1 - 9410660 - Los Angeles, CA 13 mi50 min 57°F1018.3 hPa (-1.2)
PFXC1 14 mi50 min W 1.9 G 2.9 57°F
AGXC1 14 mi50 min SW 8 G 8 56°F 1018.3 hPa (-1.2)
PRJC1 16 mi50 min W 4.1 G 5.1
46256 17 mi50 min 56°F4 ft
46222 - San Pedro, CA (092) 19 mi50 min 56°F3 ft
46253 24 mi50 min 56°F3 ft
46262 34 mi50 min 57°F5 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 35 mi40 min SE 5.8 G 7.8 1017.6 hPa

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, CA4 mi57 minN 010.00 miFair57°F52°F83%1018 hPa
Hawthorne, Hawthorne Municipal Airport, CA5 mi57 minN 010.00 miFair57°F51°F81%1018.3 hPa
Santa Monica, Santa Monica Municipal Airport, CA11 mi59 minN 010.00 miFair54°F48°F80%1018.2 hPa
Los Angeles / USC Campus Downtown, CA12 mi63 minN 010.00 miFair57°F50°F78%1018 hPa
Long Beach, Long Beach Airport, CA14 mi57 minN 010.00 miFair59°F48°F69%1017.9 hPa
Los Alamitos Army Airfield, CA20 mi1.9 hrsN 010.00 miFair53°F49°F89%1018.9 hPa
Burbank - Bob Hope Airport, CA22 mi57 minWNW 510.00 miFair56°F50°F81%1017.2 hPa
Van Nuys, Van Nuys Airport, CA23 mi59 minNNE 310.00 miFair55°F48°F77%1017.6 hPa
Fullerton, Fullerton Municipal Airport, CA23 mi57 minN 010.00 miFair57°F50°F78%1017.8 hPa

Wind History from LAX (wind in knots)
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Last 24hrE3E6E6E6E7SE5S3CalmCalm4SW11W14W17W17
G23
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1 day agoW13W10SW8SW5W113SW5W6W9
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2 days agoNE4CalmSE4CalmE5E7SE7S6SW13W11SW13SW14SW11W11W15W12W12W15SW11W10W10W10W10W13

Tide / Current Tables for El Segundo, Santa Monica Bay, California
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El Segundo
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Sat -- 12:37 AM PDT     Moonset
Sat -- 01:24 AM PDT     4.97 feet High Tide
Sat -- 06:15 AM PDT     Sunrise
Sat -- 09:08 AM PDT     -0.17 feet Low Tide
Sat -- 11:07 AM PDT     Moonrise
Sat -- 04:25 PM PDT     3.19 feet High Tide
Sat -- 07:29 PM PDT     Sunset
Sat -- 08:28 PM PDT     2.59 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.64.94.94.53.72.71.60.70.1-0.2-00.41.11.82.533.23.232.82.62.62.83.2

Tide / Current Tables for Santa Monica, California
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Santa Monica
Click for Map
Sat -- 12:37 AM PDT     Moonset
Sat -- 01:15 AM PDT     5.18 feet High Tide
Sat -- 06:15 AM PDT     Sunrise
Sat -- 08:59 AM PDT     -0.16 feet Low Tide
Sat -- 11:08 AM PDT     Moonrise
Sat -- 04:14 PM PDT     3.30 feet High Tide
Sat -- 07:30 PM PDT     Sunset
Sat -- 08:16 PM PDT     2.68 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.95.25.14.63.72.61.60.60-0.200.61.322.73.13.33.232.82.72.733.5

Weather Map and Satellite Images
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wmap_P
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 (5,6,7,8)
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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.