Thursday, November23, 2017 L-36.com


Marine Weather and Tides
Rossmoor, 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 6:31AMSunset 4:46PM Thursday November 23, 2017 6:52 AM PST (14:52 UTC) Moonrise 11:38AMMoonset 10:14PM Illumination 24% Phase: Waxing Crescent; Moon at 5 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- 206 Am Pst Thu Nov 23 2017
Today..Winds variable 10 kt or less, becoming nw 10 kt in the afternoon. Wind waves 2 ft or less. W swell 2 to 3 ft at 10 seconds.
Tonight..W winds 5 to 10 kt. Wind waves 2 ft or less. W swell 2 to 3 ft at 11 seconds.
Fri..Winds variable 10 kt or less. Wind waves 2 ft or less. W swell 2 to 3 ft at 13 seconds.
Fri night..Winds variable 10 kt or less. Wind waves 2 ft or less. W swell 2 to 3 ft at 12 seconds.
Sat..SE winds 5 to 10 kt. Wind waves 2 ft or less. W swell 2 to 3 ft at 12 seconds.
Sat night..S winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. W swell 2 ft at 12 seconds.
Sun..W winds 10 to 15 kt. Wind waves 2 ft or less. W swell 2 to 4 ft.
Mon..NW winds 15 to 20 kt with gusts to 25 kt. Combined seas 4 to 6 ft.
PZZ600 206 Am Pst Thu Nov 23 2017
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 10z...or 2 am pst...a 992 mb low was located 500 nm nw of seattle. A 1028 mb high was over western colorado with a ridge extending to a 1021 mb high 200 nm W of point conception. A weak trough of low pressure was along the southern ca coast.

7 Day Forecast for Marine Location Near Rossmoor, CA
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location: 33.79, -118.07     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 231147
afdlox
area forecast discussion
national weather service los angeles oxnard ca
347 am pst Thu nov 23 2017

Synopsis
Record or near record temperatures are forecast to continue
through Friday as the strong upper ridge and weak offshore flow
continues to persist over the region. An area of low pressure
will approach by Sunday with increasing clouds and cooler
temperatures. There is a chance of showers for areas north of
point conception Sunday night into Monday. Surface high pressure
will build into the great basin early next week allowing for
gusty offshore winds to develop by late Monday through early
Wednesday.

Short term (tdy-sat)
high pressure continues to dominate the southern california
weather pattern. Currently 592 dm hights are over the area
extending from an upper high 250 miles SW of san diego. There is
about 4 mb of an offshore push both from the east and north. There
are slight onshore trends. The upper ridge will keep the clouds
out of vta and la counties but slo and sba counties will have
enough mid and high level clouds to make for a partly cloudy day.

All of this is going to add up to a very warm day. One of the
warmest if not the warmest thanksgiving since records started back
in the 1870s. Many daily records are poised to fall ESP in the
vlys. Still it will be cooler (esp at the coast) than ydy as hgts
will fall and the offshore flow will weaken through the day as a
trof moves into NRN ca.

The highest temperature ever recorded on thanksgiving (which is
not the same a daily record since it falls on different dates) in
downtown los angeles was 90 degrees, set on november 26th, 1903.

The upper level ridge of high pressure will continue to weaken
Friday into Saturday. The offshore flow will also decrease some
each day. Periodic higher level clouds will drift across the
forecast area, while temperatures will continue to gradually trend
downward.

Max temps however will still be well above each day... Today temps
will be 18 to 22 degrees above normal... 12 to 18 degrees above
normal on Friday and 8 to 12 degrees on Saturday.

Long term (sun-wed)
a stronger upper low moves into pac NW on Sunday and pushes the
ridge away to the south and east. A weak cold front will approach
the area Sunday afternoon. Clouds will increase through the day
esp over slo and sba counties. A slight chc of rain will develop
over NW slo county later in the afternoon. There will be an
increasing chc of rain Saturday night into early Sunday morning
across slo and sba counties as the front moves over the area. A
chc of rain will persist over the interior and north slopes during
the day Monday. MAX temps will fall to normal across most of slo
and sba counties. Temps across vta and la counties will continue
to fall but will still be above normal.

Strong north to south gradients will develop once the trough axis
moves to the east of the region on Monday. The GFS and ec agree
that a strong north-northeast wind event is setting up for Monday
night and Tuesday. The GFS forecasts a 1040 mb surface high over
idaho Tuesday morning, strengthening to a 1043 by Wednesday. The
gfs fcst lax-dag grad for Tuesday is -9 mb and 5.5 mb Wednesday
morning. There will be moderate north winds Monday night with the
strongest winds across the sba south coast and the i-5 corridor.

The winds will turn to the NE Tuesday morning and a classic santa
ana will set up. It will be at least a moderate event and if the
upper level support lines up it could be a strong event. The santa
ana winds will continue into Wednesday but they will be weaker.

Monday will be the coolest day due to the clouds and lower hgts.

Max temps will rebound Tue and Wed but not as much as one might
think due to the large amount of cool air moving into the air from
the e. Min temps Tuesday and ESP Wednesday will be below normal in
the non windy areas. Interior sections will likely see some frost
and perhaps even some freezing conds.

Aviation 23 1140z
at 0922z at klax, there was a surface based inversion with the
top of the inversion around 1300 feet with a temperature of 29
degrees celsius.

High confidence in cavu taf.

Klax... High confidence in cavu taf. 30% chance for easterly winds
reaching 10 kt through 14z this morning.

Kbur... High confidence in cavu taf.

Marine 23 230 am...

for the outer waters, good confidence in current forecast. Winds
and seas are expected to remain below small craft advisory (sca)
levels through this morning. By this afternoon, northwest winds
are likely to increase to SCA levels across pzz670 673, especially
the western portion through Friday afternoon, while pzz676
remains just below SCA levels. There will be local gusts to 30 kt
on the very NW portion of pzz676 this evening into fri. Winds will
shift to the south late Friday night into Saturday with local
gusts to around 25 kt across the northern portion of the outer
waters. The best chance for widespread SCA level gusts will be by
Sunday afternoon when the winds shift back to the nw. 70%
confidence factor for SCA for the outer waters by late Sunday
afternoon into Monday.

For the inner waters, high confidence in current forecast. For
the waters north of point sal, winds and seas are expected to
remain below SCA levels through Sunday, although there is a 20%
chance of SCA level winds this afternoon evening. For the waters
south of point conception, winds and seas are expected to remain
below SCA levels through Sunday.

Lox watches warnings advisories
Ca... None.

Pz... Small craft advisory in effect from 3 pm this afternoon to 3
pm pst Friday for zones 670-673. (see laxmwwlox).

Hazard potential outlook (sat-wed)
there is the potential for elevated to critical fire weather
conditions Monday through Wednesday for portions of southwest
california. From Monday into Monday night, there is the potential
for strong northerly winds, followed by the potential for
strong santa ana winds and low humidities on Tuesday, with gusty
offshore winds lingering into Wednesday.

Public... Rorke
aviation... Kaplan
marine... Kaplan
synopsis... Kaplan
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PRJC1 7 mi53 min N 7 G 8.9
PSXC1 8 mi53 min N 5.1 G 6
PFXC1 8 mi53 min N 6 G 6 69°F
46256 9 mi61 min 62°F2 ft
OHBC1 - 9410660 - Los Angeles, CA 12 mi53 min 62°F1016.1 hPa (+0.0)
46253 16 mi53 min 64°F2 ft
46222 - San Pedro, CA (092) 18 mi53 min 63°F2 ft
ICAC1 - 9410840 - Santa Monica Pier 27 mi53 min ENE 4.1 G 8 74°F 60°F1016 hPa (+0.0)
46221 - Santa Monica Bay, CA (028) 30 mi53 min 64°F2 ft

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, CA1 mi55 minN 010.00 miFair58°F46°F66%1016.2 hPa
Long Beach, Long Beach Airport, CA5 mi60 minN 010.00 miFair66°F42°F42%1016 hPa
Fullerton, Fullerton Municipal Airport, CA7 mi60 minN 010.00 miFair60°F48°F65%1015.8 hPa
John Wayne-Orange County Airport, CA13 mi60 minN 010.00 miFair60°F50°F70%1015.8 hPa
Hawthorne, Hawthorne Municipal Airport, CA17 mi60 minN 010.00 miFair70°F41°F35%1015.9 hPa
Los Angeles / USC Campus Downtown, CA19 mi66 minNNE 410.00 miFair70°F39°F32%1015.8 hPa
Los Angeles, Los Angeles International Airport, CA20 mi60 minNE 510.00 miA Few Clouds72°F39°F31%1015.8 hPa

Wind History from SLI (wind in knots)
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Last 24hrCalmCalmN3CalmCalmS5S4W5NW7CalmNW5CalmCalmCalmW4NW5N3CalmCalmCalmCalmCalmCalmCalm
1 day agoCalmCalmCalmCalmCalmCalmS8S7S5S3CalmCalmCalmNW3CalmCalmCalmCalmCalmNW3CalmE3CalmCalm
2 days agoCalmNE3E3SE3S3SW3SW5S9N5S5SW4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for Los Patos (highway bridge), California
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Los Patos (highway bridge)
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Thu -- 01:56 AM PST     2.92 feet High Tide
Thu -- 05:51 AM PST     1.83 feet Low Tide
Thu -- 06:31 AM PST     Sunrise
Thu -- 10:36 AM PST     Moonrise
Thu -- 11:50 AM PST     4.06 feet High Tide
Thu -- 04:45 PM PST     Sunset
Thu -- 07:55 PM PST     0.34 feet Low Tide
Thu -- 09:14 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.52.82.92.72.321.822.42.93.53.94.13.93.52.92.21.40.80.50.30.50.91.5

Tide / Current Tables for Long Beach, Inner Harbor, California
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Long Beach
Click for Map
Thu -- 01:02 AM PST     3.34 feet High Tide
Thu -- 04:46 AM PST     2.89 feet Low Tide
Thu -- 06:32 AM PST     Sunrise
Thu -- 10:37 AM PST     Moonrise
Thu -- 10:57 AM PST     4.69 feet High Tide
Thu -- 04:45 PM PST     Sunset
Thu -- 06:48 PM PST     0.55 feet Low Tide
Thu -- 09:14 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.23.33.33.12.92.933.33.84.24.64.74.54.13.42.61.71.10.70.60.81.21.82.4

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 (9,2,3,4)
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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.