Sunday, April22, 2018 L-36.com


Marine Weather and Tides
Ladera Heights, 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 6:11AMSunset 7:32PM Sunday April 22, 2018 11:18 AM PDT (18:18 UTC) Moonrise 12:10PMMoonset 1:34AM Illumination 49% Phase: First Quarter Moon; Moon at 7 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- 837 Am Pdt Sun Apr 22 2018
Today..Winds variable 10 kt or less, becoming W 10 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 15 seconds. Patchy dense fog with vsby 1 nm or less in the morning.
Tonight..W winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. W swell 2 to 3 ft at 13 seconds. W swell 2 ft. Patchy dense fog with vsby 1 nm or less.
Mon..E to se winds 5 to 10 kt, becoming W 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell nw 2 ft at 14 seconds and S 2 ft at 14 seconds. Patchy dense fog with vsby 1 nm or less in the morning.
Mon night..W winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. NW swell 2 ft at 13 seconds. W swell 2 ft. Patchy fog after midnight.
Tue..Winds variable 10 kt or less, becoming W 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell nw 2 ft at 12 seconds and S 2 ft at 13 seconds. Patchy fog in the morning.
Tue night..W winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. S swell 2 ft at 15 seconds. Patchy fog after midnight.
Wed..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 to 3 ft and sw 2 ft. Patchy fog.
Thu..W winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 to 4 ft and sw 2 ft. Patchy fog.
PZZ600 837 Am Pdt Sun Apr 22 2018
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 15z...or 8 am pdt...a 1032 mb surface high was centered about 200 nm west of portland and a 1010 mb low was over southern nevada. A shallow marine inversion will possibly bring patchy dense fog across the coastal waters tonight and Mon morning.

7 Day Forecast for Marine Location Near Ladera Heights, CA
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location: 34.02, -118.36     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 221808 aaa
afdlox
area forecast discussion... Updated
national weather service los angeles oxnard ca
1108 am pdt Sun apr 22 2018
updated aviation discussion

Synopsis 22 703 am.

There will be overnight and morning coastal low clouds and fog
for several days this coming week otherwise conditions will be
warm and dry. Temperatures will cool a bit Friday and Saturday as
a weak weather system moves across the region.

Short term (tdy-tue) 22 903 am.

Satellite imagery showing clear skies across southwest california
this morning. Weak upper level ridge of high pressure combined
with a nearly neutral pressure gradient will bring another very
warm day across interior sections today. Taking a look at current
observations, already seeing 8 am temperatures off to a fast
start, with many inland areas trending warmer than this time
yesterday. A slight onshore pressure trend is expected to bring
some cooling across the coastal plain today, and perhaps a degree
or two of cooling across the coastal valleys. However, inland
valleys, mountains, and deserts should see little change in
temperatures.

Latest NAM wrf models still indicating the potential for low
clouds and fog to return to some coastal areas tonight. The
marine layer will be quite shallow, so there is the potential
for patchy dense fog, at least early in the night.

*** from previous discussion ***
the marine layer may deepen enough to allow low clouds to squeak
into the san gabriel valley late tonight or early Monday. Expect
skies to clear in most areas by mid to late morning on Monday.

Heights will not change much, or may even rise a bit, but onshore
gradients are forecast to increase, and 950 mb temps will be at
least 2-3 degrees celsius lower west of the mountains than those
today, so expect a few degrees of cooling west of the mtns. Expect
little chance in the mtns and deserts, and there could even be a
touch of warming.

A weak upper low will approach the forecast area from the
southwest Monday night and tue. WRF cross sections indicate some
deepening of the marine layer, so expect more in the way of night
through morning low clouds in the valleys. Still expect skies to
clear well in most areas by afternoon tue. MAX temps may be down a
couple more degrees, especially across interior portions of the
coastal plain and in the valleys, thanks to a stronger marine
intrusion, later clearing, and some additional slight cooling
at 950 mb.

Long term (wed-sat) 22 431 am.

The ec and GFS continue to be generally in good agreement thru
wed morning, then begin to disagree quite a bit. Both models show
a large upper low moving through the eastern pacific. Early wed
morning, both models show the center within 50 nm or so of each
other, about 700 nm west of monterey. By late afternoon, the gfs
shows the upper low nearly 200 nm closer to the coast than does
the ec. The aforementioned weak upper low which will be to our
southwest Tue will open up and basically flatten out altogether by
early wed. Its main affect on our weather may be to deepen the
marine layer a bit more Tue night, sending more widespread low
clouds into the valleys. For Wed across the region, the GFS shows
lowering heights and a good onshore push, with some cooling. The
ec, with a ridge popping up ahead of the large upper low, actually
shows some height rises. For now, will keep the forecast for
slight cooling across the region.

Both models show the upper low moving northward thu, with the gfs
continuing to be farther east. The GFS also shows a much more
pronounced trough extending southward from the main low, with the
axis a few hundred miles west of pt conception. The trough axis
is forecast to push into the forecast at Thu night and fri, which
would likely bring a very deep marine layer, possible drizzle, and
fairly cool weather. The ec, with the upper low farther NW and
without the pronounced southward-extending trough, keeps heights
much higher across the region, with less cooling, especially
inland. Both models show the upper low translating eastward fri,
then the ec shows it hooking northward toward the far northern ca
coast sat, while the GFS shows it continuing to move eastward,
passing just north of the forecast area early sat, then moving
into the great basin late sat. The GFS solution would bring a
chance of showers to at least portions of the forecast area late
fri through Sat morning. At this point, have kept pops out of the
forecast since there is so little confidence and the end of the
rainy season is approaching, but this will continue to have to be
watched closely.

Aviation 22 1807z.

At 1710z at klax, the marine inversion was around 400 ft deep. The
top of the inversion was at 2200 ft with a temperature of 21 deg c.

Moderate confidence overall in the 18z tafs due to uncertainties
with the timing and extent of low clouds and fog for all coastal
airfields except ksbp later tonight into Mon morning. The
development of the low clouds with lifr ifr CIGS vsbys are expected
to range from about 08z at ksmx and klgb to around 13z at ksba then
persist thru late Mon morning for the most part. The timing of the
onset of the low clouds may be off + - an hour or two. Otherwise,
vfr conditions can be expected.

At ksbp, MVFR vsbys and scattered low clouds are expected from 12z-
16z Mon morning, however there is a 40% chance low clouds and
lifr ifr conditions could move into the airfield at that time.

Otherwise,VFR conditions should prevail at the airfield
thru Mon morning.

For kprb, kbur, kvny, kwjf and kpmd, there is hi confidence in the
18z tafs withVFR conditions expected thru Mon morning.

Klax... Moderate confidence overall in the 18z TAF due to
uncertainties with the timing and extent of low clouds and fog for
later tonight thru Mon morning. The development of the low clouds
with lifr conditions are expected around 09z then improve to ifr
around 14z and to MVFR around 17z before scattering toVFR around
19z. The timing of the onset and dissipation of the low clouds may
be off + - an hour or two. Otherwise,VFR conditions can be expected
thru Mon afternoon.

Kbur... Generally hi confidence in the 18z TAF withVFR conditions
expected through Mon morning. There is a 20% chance of ifr CIGS mon
morning, however.

Marine 22 840 am.

For the outer waters, moderate to high confidence in current
forecast. There is a 60% chance of small craft advisory (sca)
level winds across pzz670 today and tonight. Otherwise, high
confidence in conditions remaining below SCA levels through
Wednesday. On Thursday, there is a 50% chance of SCA level winds
across the entire outer waters, especially across pzz670 673.

For the inner waters, high confidence in current forecast. For the
waters north of point sal, there is a 30% chance of SCA level
winds Thursday afternoon. For the waters south of point
conception, high confidence in winds seas remaining below sca
levels through Thursday.

A shallow marine inversion may generate some patchy dense fog
this morning over the inner waters, and across all the waters
tonight and Monday morning.

Lox watches warnings advisories
Ca... None.

Pz... Small craft advisory in effect until 9 pm pdt this evening
for zone 670. (see laxmwwlox).

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

Public... Gomberg db
aviation... Sirard
marine... Rat sirard
synopsis... Kj
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ICAC1 - 9410840 - Santa Monica Pier 7 mi48 min WSW 2.9 G 4.1 59°F 59°F1014.6 hPa
PXAC1 18 mi48 min SE 6 G 7
46221 - Santa Monica Bay, CA (028) 18 mi48 min 58°F3 ft
PSXC1 19 mi48 min S 5.1 G 7
BAXC1 19 mi48 min SSE 5.1 G 6
PFXC1 20 mi48 min S 4.1 G 4.1 62°F
PFDC1 21 mi48 min SE 5.1 G 6
OHBC1 - 9410660 - Los Angeles, CA 21 mi48 min 57°F1014.5 hPa
PRJC1 22 mi48 min S 2.9 G 4.1
AGXC1 22 mi48 min SSE 2.9 G 2.9 62°F 1014.6 hPa
46256 24 mi48 min 59°F5 ft
46222 - San Pedro, CA (092) 28 mi48 min 59°F3 ft
46253 32 mi48 min 60°F3 ft
46262 41 mi48 min 59°F4 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 41 mi38 min E 1.9 G 3.9 1014.2 hPa

Wind History for Santa Monica, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Los Angeles / USC Campus Downtown, CA4 mi31 minN 010.00 miFair78°F52°F40%1013.1 hPa
Santa Monica, Santa Monica Municipal Airport, CA5 mi27 minSSW 910.00 miFair67°F53°F61%1014.2 hPa
Los Angeles, Los Angeles International Airport, CA6 mi25 minWSW 810.00 miA Few Clouds68°F54°F61%1014.1 hPa
Hawthorne, Hawthorne Municipal Airport, CA6 mi25 minW 610.00 miFair70°F54°F57%1013.9 hPa
Burbank - Bob Hope Airport, CA12 mi25 minVar 410.00 miFair80°F44°F28%1012.4 hPa
Torrance, Zamperini Field Airport, CA15 mi31 minW 610.00 miClear72°F55°F57%1013.9 hPa
Van Nuys, Van Nuys Airport, CA15 mi27 minVar 310.00 miFair80°F43°F27%1012.7 hPa
Los Angeles, Whiteman Airport, CA17 mi23 minE 510.00 miFair77°F37°F24%1015.2 hPa
Long Beach, Long Beach Airport, CA17 mi25 minSW 510.00 miFair71°F52°F51%1014.1 hPa
El Monte, CA18 mi33 minSW 310.00 miFair79°F46°F32%1013.9 hPa
Los Alamitos Army Airfield, CA23 mi80 minSSW 310.00 miA Few Clouds70°F51°F52%1014.2 hPa
Fullerton, Fullerton Municipal Airport, CA23 mi25 minVar 410.00 miFair76°F51°F42%1013.4 hPa

Wind History from CQT (wind in knots)
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Last 24hrCalm4W445W7--CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
1 day ago3CalmW7
G16
33W6343CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
2 days agoCalmCalm34--W7--W5CalmCalmCalm3CalmE6E45E4E55E344CalmCalm

Tide / Current Tables for Santa Monica, Municipal Pier, California
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Santa Monica
Click for Map
Sun -- 01:34 AM PDT     Moonset
Sun -- 02:30 AM PDT     4.81 feet High Tide
Sun -- 06:14 AM PDT     Sunrise
Sun -- 10:19 AM PDT     -0.17 feet Low Tide
Sun -- 12:10 PM PDT     Moonrise
Sun -- 02:46 PM PDT     First Quarter
Sun -- 05:38 PM PDT     3.59 feet High Tide
Sun -- 07:30 PM PDT     Sunset
Sun -- 10:13 PM PDT     2.62 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
44.54.84.84.43.72.81.80.90.2-0.1-0.10.411.92.63.23.53.63.43.12.82.62.7

Tide / Current Tables for Santa Monica, California
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Santa Monica
Click for Map
Sun -- 01:34 AM PDT     Moonset
Sun -- 02:31 AM PDT     4.84 feet High Tide
Sun -- 06:14 AM PDT     Sunrise
Sun -- 10:20 AM PDT     -0.14 feet Low Tide
Sun -- 12:10 PM PDT     Moonrise
Sun -- 02:46 PM PDT     First Quarter
Sun -- 05:39 PM PDT     3.63 feet High Tide
Sun -- 07:30 PM PDT     Sunset
Sun -- 10:13 PM PDT     2.65 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
44.54.84.84.43.82.81.80.90.2-0.1-00.41.11.92.73.23.63.63.43.12.82.72.7

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 (14,3,4,5)
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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.