Friday, September22, 2017 L-36.com


Marine Weather and Tides
Marina del Rey, CA

Version 3.4
What's New / NOTES
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.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:40AMSunset 6:51PM Thursday September 21, 2017 11:15 PM PDT (06:15 UTC) Moonrise 8:03AMMoonset 8:05PM Illumination 3% Phase: Waxing Crescent; Moon at 2 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- 825 Pm Pdt Thu Sep 21 2017
.small craft advisory in effect until 3 am pdt Friday...
Tonight..Western portion...nw winds 20 to 30 kt becoming 15 to 25 kt after midnight. Elsewhere...w winds 10 to 20 kt becoming variable 10 kt or less after midnight. Combined seas 5 to 7 ft dominant period 7 seconds.
Fri..SE winds 5 to 10 kt...becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 3 to 5 ft at 9 seconds.
Fri night..W winds 15 to 20 kt with gusts to 25 kt...becoming nw 10 to 15 kt after midnight. Strongest western portion. Wind waves 1 to 3 ft. W swell 3 to 5 ft at 10 seconds.
Sat..NE winds 5 to 10 kt...becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 2 to 4 ft at 10 seconds.
Sat night..W winds 10 to 15 kt...becoming nw 5 to 10 kt after midnight. Wind waves 2 ft or less. W swell 2 to 4 ft at 10 seconds. Patchy fog after midnight.
Sun..N winds 5 to 10 kt. Wind waves 2 ft or less. W swell 2 to 4 ft. Patchy fog in the morning.
Sun night..W winds 10 to 15 kt...becoming N 5 to 10 kt after midnight. Wind waves 2 ft or less. W swell 2 to 4 ft.
Mon..NW winds 10 to 15 kt. Wind waves 2 ft or less. W swell 2 to 4 ft.
Tue..NW winds 10 to 15 kt. Wind waves 2 ft or less. W swell 2 to 4 ft.
PZZ600 825 Pm Pdt Thu Sep 21 2017
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 1032 mb high was 900 nm W of portland...and a 1008 low was over nevada. Strong nw winds over the outer waters will slowly diminish overnight. Hazardous short period seas will affect all areas tonight into early Friday.

7 Day Forecast for Marine Location Near Marina del Rey, CA
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location: 33.96, -118.45     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 220603
afdlox
area forecast discussion
national weather service los angeles oxnard ca
1103 pm pdt Thu sep 21 2017

Aviation discussion updated...

Synopsis
An upper level trough of low pressure will persist over the
western united states through Saturday resulting in cooler than
usual and breezy conditions. An upper level ridge of high pressure
and weak offshore flow will setup Sunday through the middle of
next week, with warmer than usual conditions and minimal marine
layer likely near the coast.

Short term (thu-sun)
the cold front that moved through the forecast area earlier today
helped to wash out the marine inversion as cooler air filtered in.

There were a few leftover strato CU here and there early this
evening, otherwise skies were mostly clear across the region. There
is a slim chance (less than 15 percent) that a few low clouds may
form on parts of the central coast and l.A. County coast later
tonight. Lingering stratocu can also be expected for the mtns mainly
on the N slopes. Otherwise, mostly clear skies are expected across
southwestern ca thru the night. Gusty NW to N winds have persisted
this evening along parts of the coast, but most especially below and
through the passes and canyons along the sba county S coast and
mtns. Wind gusts up to 46 mph have been observed at both the
montecito hills raws and san marcos pass raws. Wind advisories will
continue in this area through late tonight. Sub-advisory level winds
continued along the central coast and antelope vly which should
gradually diminish overnight. Wind advisories in effect for these
areas will be cancelled shortly.

A rather deep upper level trough for late september over ca this
evening will persist over the area through Fri night, then the axis
of the upper trof will slowly move E into the great basin Sat thru
sun. 500 mb heights over swrn ca will gradually improve from the 560s
to the 570s by late in the weekend.

Dry and cool weather can be expected over the forecast area Fri thru
sat, then dry but warmer conditions should prevail for sun. Gusty nw
winds can be expected along some coastal areas again on fri, with
gusty NW to N winds for the sba county S coast and mtns each
evening. There should be some offshore flow developing over slo sba
counties and interior vtu l.A. Counties Fri night. Offshore winds
will increase further later Sat night into Sun morning, with gusty
ne canyon winds possible in the favored areas of vtu l.A. Counties,
possibly to advisory levels. There may be a few marine layer clouds
over the l.A. County coast and san gabriel vly Fri night into sat
morning. There is a small chance low clouds may affect the l.A.

County coast later Sat night into Sun morning, but the latest NAM is
forecasting the offshore flow to increase enough to push any low
clouds off the coast at that time. Otherwise, mostly clear skies for
the most part are expected thru sun.

Temps across the region will remain unseasonably cool Fri and sat
with highs in the warmest vlys and lower mtns in the 70s to around
80. Temps should be much warmer and near to slightly above normal on
sun with highs in the warmest vlys and lower mtns topping out in the
mid 80s to around 90.

***from previous discussion***

Long term (mon-thu)
offshore gradients strengthen slightly each day through Tuesday
which corresponds to the best period of upper level support with
some additional energy dropping into the trough. As a result the
breeziest day (still likely below advisory levels) still appears
to be Tuesday and we'll also see a corresponding jump in
temperatures that day as well. Gradients and upper support weaken
wed Thu but air mass warms up as high pressure builds in from the
west. Coast and valleys could actually see slight cooling wed
with the weaker offshore flow, however mtns and av will continue
to warm through the period. Models continue to show light offshore
flow and warm temps continuing right on through next weekend.

Aviation 22 06z.

At 03z at klax... There was no inversion in the lower atmosphere.

Overall... Moderate to high confidence in the current tafs. There
is a fifteen percent chance of MVFR CIGS developing at klgb and
klax overnight. Otherwise and elsewhereVFR conditions will
prevail.

Klax... Moderate to high confidence in the current taf. There is
a fifteen percent chance of MVFR CIGS developing overnight.

OtherwiseVFR conditions will prevail. No east winds greater than
seven knots are expected.

Kbur... High confidence in the current taf.VFR conditions will
prevail.

Marine 21 800 pm.

Northwest winds across the outer waters will likely be at gale
warning levels through late tonight, with gusts up to 35 knots.

Scas will likely be issued for Friday as the winds begin to
diminish late tonight. There is a chance that the winds will begin
to diminish earlier than expected overnight over the outer waters
and the gale will have to be downgraded to sca.

Northwest winds over all nearshore areas are currently at high-
end SCA level and will gradually decrease overnight.

Steep short-period seas are affecting all portions of the coastal
waters and this will continue through late tonight into Friday.

Lox watches warnings advisories
Ca... Wind advisory in effect until 4 am pdt Friday for zones
39-52. (see laxnpwlox).

Pz... Small craft advisory in effect until 3 am pdt Friday for
zones 645-650-655. (see laxmwwlox).

Gale warning in effect until 3 am pdt Friday for zones
670-673-676. (see laxmwwlox).

Hazard potential outlook (sun-thu)
no significant hazards expected.

Public... Sirard mw
aviation... Kj
marine... Smith
synopsis... Kaplan
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ICAC1 - 9410840 - Santa Monica Pier 4 mi45 min ENE 7 G 11 65°F 67°F1010.3 hPa
46221 - Santa Monica Bay, CA (028) 12 mi45 min 68°F6 ft
PXAC1 17 mi45 min Calm G 0
BAXC1 17 mi45 min SSW 1.9 G 2.9
PSXC1 18 mi45 min S 4.1 G 6
PFXC1 19 mi45 min SW 7 G 8.9 65°F
PFDC1 19 mi45 min SSW 7 G 8.9
OHBC1 - 9410660 - Los Angeles, CA 19 mi45 min 63°F1010.3 hPa
AGXC1 20 mi45 min WSW 8 G 9.9 64°F 1010.2 hPa
PRJC1 21 mi45 min WSW 7 G 8
46256 22 mi53 min 64°F5 ft
46222 - San Pedro, CA (092) 25 mi45 min 64°F7 ft
46253 30 mi75 min 67°F5 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 35 mi35 min NW 14 G 19 67°F1009.5 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, CA3 mi22 minE 710.00 miA Few Clouds63°F55°F76%1009.9 hPa
Santa Monica, Santa Monica Municipal Airport, CA5 mi24 minNE 410.00 miFair63°F55°F76%1010 hPa
Hawthorne, Hawthorne Municipal Airport, CA6 mi22 minE 510.00 miFair65°F54°F68%1010.1 hPa
Los Angeles / USC Campus Downtown, CA10 mi28 minE 410.00 miFair65°F54°F68%1010.1 hPa
Torrance, Zamperini Field Airport, CA13 mi3.5 hrsW 310.00 miClear63°F53°F73%1009.8 hPa
Van Nuys, Van Nuys Airport, CA17 mi24 minNE 310.00 miFair62°F52°F70%1009.7 hPa
Burbank - Bob Hope Airport, CA17 mi22 minESE 310.00 miFair62°F52°F70%1009.3 hPa
Long Beach, Long Beach Airport, CA18 mi22 minESE 510.00 miFair64°F55°F75%1010.1 hPa
Los Angeles, Whiteman Airport, CA21 mi3.4 hrsN 010.00 miClear63°F50°F64%1010.8 hPa
El Monte, CA24 mi3.5 hrsVar 510.00 miA Few Clouds64°F51°F64%1010.5 hPa
Los Alamitos Army Airfield, CA24 mi17 minESE 410.00 miFair62°F53°F74%1010.8 hPa

Wind History from LAX (wind in knots)
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Last 24hrSW6S5S6W6SW4SW6S6S6W9W9W11W17W17W14W13
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W13SW13W13SW73E6E7E7
1 day agoS4CalmCalmCalmNE3NE4CalmNE5E3E3SE7SE5W8SW11W13W12W13SW11W9W9W10W11W9W7
2 days agoW5SW3S4CalmCalmSE3NW4CalmCalmS4W4W7W8W8W9W10SW12W10W11W11W11W8W7SW5

Tide / Current Tables for Santa Monica, California
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Santa Monica
Click for Map
Fri -- 04:56 AM PDT     0.96 feet Low Tide
Fri -- 06:42 AM PDT     Sunrise
Fri -- 09:01 AM PDT     Moonrise
Fri -- 11:09 AM PDT     5.41 feet High Tide
Fri -- 05:31 PM PDT     0.77 feet Low Tide
Fri -- 06:50 PM PDT     Sunset
Fri -- 08:39 PM PDT     Moonset
Fri -- 11:36 PM PDT     4.64 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.8431.91.211.32.13.14.255.45.24.53.52.31.40.80.81.32.23.244.5

Tide / Current Tables for King Harbor, Santa Monica Bay, California
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King Harbor
Click for Map
Fri -- 04:59 AM PDT     0.91 feet Low Tide
Fri -- 06:41 AM PDT     Sunrise
Fri -- 09:00 AM PDT     Moonrise
Fri -- 11:13 AM PDT     5.27 feet High Tide
Fri -- 05:34 PM PDT     0.71 feet Low Tide
Fri -- 06:49 PM PDT     Sunset
Fri -- 08:39 PM PDT     Moonset
Fri -- 11:41 PM PDT     4.52 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.742.91.91.20.91.21.9344.95.35.14.43.42.31.40.80.81.2233.94.4

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of Southwest    EDIT
Geos

Wind Forecast for Los Angeles/Oxnard, CA (2,6,7,8)
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Ground Weather Radar Station Santa Ana Mtns, CA
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weather_mapweather_map weather_map

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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.