Thursday, August17, 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 6:15AMSunset 7:39PM Wednesday August 16, 2017 10:58 PM PDT (05:58 UTC) Moonrise 1:07AMMoonset 3:17PM Illumination 26% Phase: Waning Crescent; Moon at 25 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 Wed Aug 16 2017
Tonight..W winds 10 to 15 kt...becoming 5 to 10 kt after midnight. Wind waves 2 ft or less. Mixed swell W 2 ft at 10 seconds and S 2 ft at 16 seconds.
Thu..Winds variable 10 kt or less...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 16 seconds.
Thu night..W winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 ft at 10 seconds and S 2 ft at 15 seconds. Patchy fog after midnight.
Fri..Winds variable 10 kt or less...becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 ft at 11 seconds and S 3 ft at 15 seconds. Patchy fog in the morning.
Fri night..W winds 10 to 15 kt...becoming 5 to 10 kt after midnight. Wind waves 2 ft or less. Mixed swell W 2 ft at 12 seconds and S 3 ft at 15 seconds. Patchy fog after midnight.
Sat..W winds 5 to 10 kt. Wind waves 2 ft or less. Mixed swell W 2 ft at 12 seconds and S 3 ft at 15 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 ft at 11 seconds and S 3 ft at 14 seconds. Patchy fog after midnight.
Sun..SW winds 5 to 10 kt. Wind waves 2 ft or less. Mixed swell W 2 ft and S 2 ft. Patchy fog.
Mon..SW winds 5 to 10 kt. Wind waves 2 ft or less. Mixed swell W 2 ft and S 2 ft.
PZZ600 817 Pm Pdt Wed Aug 16 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 1028 mb high was 700 nm W of eureka...and a 1008 mb low was near las vegas.

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 170317
afdlox
area forecast discussion
national weather service los angeles oxnard ca
817 pm pdt Wed aug 16 2017

Synopsis
Night through morning low clouds and fog will continue through the
period. Weaker onshore breezes and a shallower marine layer will
bring a few degrees of warming through Saturday, even though
temperatures will remain a bit below normal in most areas. Another
weak trough will develop Sunday which will deepen the marine
layer and cool temperatures.

Short term (wed-sat)
high temperatures trended up generally 4-9 degrees today as cloud
coverage scoured out earlier today compared to yesterday. Another
reverse clearing scenario that occurred yesterday did not pan out
today as the moist or deep marine layer went from 3500 ft to
around 1500 ft by this afternoon. Latest satellite imagery
indicated clear skies across the entire forecast area except for
some patchy low clouds across the south bay of la county. Low
clouds are expected to redevelop later tonight into the overnight
hours. With the latest amdar soundings around lax lower then
originally anticipated for tonight, will back off on some valley
low cloud coverage... Especially pulling it out of the santa
clarita valley and interior slo county valleys except for the
salinas river valley. Still expect low clouds to reach the san
gabriel and san fernando valleys as well as the santa ynez valley
overnight into Thu morning.

Synoptically, the broad upper level trough that was persisting
over much of california the past few days has begun to breakdown
and push to the east. Meanwhile, a strong upper ridge located
just off the california coast will begin to nudge eastward over
the region. Heights and thickness lvls will continue to be on the
rise. Expect h5 to be around 590 dm over much of the region
tomorrow afternoon. Also, the combination of a more shallow marine
layer and weaker onshore flow will allow high temps to continue
to trend upward. 950 mb temps really climb across the interior as
weak north to northeasterly flow is expected across the antelope
valley and adjacent mountains. Therefore highs are expected to
jump up to the mid to upper 90s across the antelope valley. Highs
will be around normal for this time of year by Thursday. Warmest
valley locations around the forecast areas should reach around 90
degrees tomorrow. Coastal areas will remain very mild with highs
up a degree or two for the most part. Expect low clouds to scour
out much sooner tomorrow possibly lingering along some beach
locations into the afternoon.

For Friday, the upper ridge will continue to strengthen across
much of california. Boundary layer temps continue to trend higher.

Onshore flow will continue to be weaker. Expect night through
morning low clouds to continue across most coastal areas and into
a few coastal valleys including the santa ynez, san gabriel and
san fernando valleys. High will be up another 2-4 degrees Friday.

Warmest valleys reaching the mid 90s while the antelope valley
reach the supper 90s. Possibly reaching 100 degrees in a few
spots.

By Saturday a weak upper trough begins to nose down from northern
cal on the eastern peripheral of the upper high over the eastern
pac. H5 around 588dm while thickness and boundary layer temps also
show a slight decrease. Onshore winds should be about the same
Saturday so expecting only a slight decrease in temps or about the
same as Friday. Once again expect night through morning low clouds
across most coastal areas and into some coastal valleys.

***from previous discussion***

Long term (sun-wed)
another weak trough with a semi-closed upper low off the central
coast will develop Sun Mon which will deepen the marine lyr and
cool temps a few degrees, especially inland. Guidance still seems
a bit warm for Monday and Tuesday given the upper pattern and what
should be a healthy marine lyr but held fairly close to mos
guidance for now. Perhaps a little warming around mid week as the
trough lifts out but probably not enough to even notice.

Aviation 17 0015z.

At 2330z, the marine layer depth was around 1900 ft deep at klax.

The top of the marine inversion was around 3600 ft with a
temperature near 19 degrees celsius.

Moderate confidence with 00z tafs in respect to cig categories and timing
of return of marine layer this evening... With lower confidence
for areas S of point conception. The marine layer should shrink at
least up to 1000 ft by Thu morning. Expect MVFR cigs. 50% chance
for ifr CIGS for kbur, kvny initially but should move up to MVFR
conds after 14z. Expect low clouds to scour out an hour to two
hours sooner compared to this morning. For areas N of point
conception fairly good confidence for ifr CIGS initially then
becoming MVFR by 14-16z Thu morning. 30% chance will stay ifr
until CIGS scour out.

Klax... Moderate confidence with 00z taf. ExpectVFR conds through
04z then MVFR conds are expected to return between 04-06z
tonight. 40% chance that CIGS could develop after 08z. CIGS should
scour out an hour earlier than the last two days.

Kbur... Moderte confidence with 00z taf. ExpectVFR conds through
08-10z. Moderate confidence for ifr CIGS to develop initially then
becming MVFR after 14z. Stratus should scour out + - 1 hour from
00z taf.

Marine 16 330 pm.

Moderate to high confidence in the current forecast. Winds not
expected to reach SCA levels overnight. However there is a 40%
chance that the outer waters from point conception to san nicolas
island, including the western portion of the santa cruz islands,
could experience local gusts to 25 kt during the evening. There is
a 10% chance of SCA gusts over the far western portion of the
santa barbara channel this evening. Otherwise winds should remain
below SCA levels through the forecast period.

Lox watches warnings advisories
Ca... None.

Pz... None.

Hazard potential outlook (sat-wed)
no significant hazards expected.

Public... Kaplan mw
aviation... Kaplan
marine... Smith
synopsis... B
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ICAC1 - 9410840 - Santa Monica Pier 4 mi46 min SW 2.9 G 5.1 67°F 72°F1014.5 hPa
46221 - Santa Monica Bay, CA (028) 12 mi28 min 67°F3 ft
PXAC1 17 mi40 min WNW 1.9 G 2.9
BAXC1 17 mi40 min WNW 6 G 6
PSXC1 18 mi40 min W 5.1 G 8
PFXC1 19 mi40 min NNW 4.1 G 5.1 68°F
OHBC1 - 9410660 - Los Angeles, CA 19 mi40 min 70°F1014.7 hPa
AGXC1 20 mi40 min WSW 5.1 G 6 67°F 1014.6 hPa
PRJC1 21 mi40 min W 2.9 G 5.1
46256 22 mi36 min 70°F5 ft
46222 - San Pedro, CA (092) 25 mi58 min 69°F3 ft
46253 30 mi58 min 71°F4 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 35 mi28 min NNW 12 G 14 70°F1014.3 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 mi65 minW 910.00 miFair67°F62°F84%1014.2 hPa
Santa Monica, Santa Monica Municipal Airport, CA5 mi67 minWSW 410.00 miFair67°F62°F84%1014.3 hPa
Hawthorne, Hawthorne Municipal Airport, CA6 mi65 minWSW 810.00 miFair67°F61°F81%1014.5 hPa
Los Angeles / USC Campus Downtown, CA10 mi71 minVar 310.00 miFair68°F60°F76%1014.1 hPa
Torrance, Zamperini Field Airport, CA13 mi3.2 hrsWNW 1110.00 miA Few Clouds66°F60°F83%1013.5 hPa
Van Nuys, Van Nuys Airport, CA17 mi67 minW 310.00 miFair70°F57°F66%1013.7 hPa
Burbank - Bob Hope Airport, CA17 mi65 minS 410.00 mi69°F57°F66%1013.3 hPa
Long Beach, Long Beach Airport, CA18 mi65 minWNW 810.00 miFair68°F61°F78%1014.3 hPa
Los Angeles, Whiteman Airport, CA21 mi3.1 hrsESE 510.00 miClear72°F57°F61%1014.9 hPa
El Monte, CA24 mi3.1 hrsSSW 710.00 miFair72°F59°F65%1014.2 hPa
Los Alamitos Army Airfield, CA24 mi60 minWNW 610.00 miFair67°F60°F78%1014.5 hPa

Wind History from LAX (wind in knots)
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Last 24hrSW6W6SW5SW4W4W4CalmS5SE84E4CalmW9W10W14W13W13W13W13W12W11W11W8W9
1 day agoSW6S4SE5SW8W6S3S4W5W6W4CalmW5SW10SW10W11W11W12
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2 days agoSW7SW33CalmN3NE3S4E4SE5W6SW6W9W8W6W12W11W14W13W13W12W13W11W7SW6

Tide / Current Tables for Santa Monica, California
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Santa Monica
Click for Map
Thu -- 12:56 AM PDT     0.16 feet Low Tide
Thu -- 01:59 AM PDT     Moonrise
Thu -- 06:17 AM PDT     Sunrise
Thu -- 07:25 AM PDT     3.73 feet High Tide
Thu -- 12:06 PM PDT     2.26 feet Low Tide
Thu -- 04:19 PM PDT     Moonset
Thu -- 06:30 PM PDT     6.13 feet High Tide
Thu -- 07:37 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.40.20.411.92.73.43.73.73.42.92.52.32.42.93.84.75.66.16.15.54.53.11.7

Tide / Current Tables for King Harbor, Santa Monica Bay, California
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King Harbor
Click for Map
Thu -- 01:00 AM PDT     0.14 feet Low Tide
Thu -- 01:59 AM PDT     Moonrise
Thu -- 06:17 AM PDT     Sunrise
Thu -- 07:31 AM PDT     3.63 feet High Tide
Thu -- 12:12 PM PDT     2.26 feet Low Tide
Thu -- 04:19 PM PDT     Moonset
Thu -- 06:36 PM PDT     5.90 feet High Tide
Thu -- 07:37 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.40.10.40.91.72.63.23.63.63.32.92.52.32.42.83.64.55.35.85.95.44.43.11.7

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 (1,6,7,8)
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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.