Tuesday, April25, 2017 L-36.com


Marine Weather and Tides
Rossmoor, CA

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:06AMSunset 7:33PM Tuesday April 25, 2017 9:43 AM PDT (16:43 UTC) Moonrise 5:52AMMoonset 6:52PM Illumination 0% Phase: New Moon; Moon at 29 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- 905 Am Pdt Tue Apr 25 2017
.gale warning in effect from 3 pm pdt this afternoon through late tonight...
Today..NW winds 15 to 25 kt...becoming W 20 to 30 kt in the afternoon with gusts to 40 kt. Combined seas 6 to 8 ft dominant period 11 seconds.
Tonight..W winds 20 to 30 kt with gusts to 40 kt. Strongest western portion. Combined seas 6 to 8 ft dominant period 9 seconds...subsiding to 4 to 6 ft dominant period 9 seconds after midnight.
Wed..NW winds 15 to 20 kt...becoming W 10 to 20 kt in the afternoon. Local gusts to 25 kt. Wind waves 2 to 4 ft. W swell 3 to 5 ft at 9 seconds.
Wed night..NW winds 15 to 20 kt with local gusts to 25 kt... Becoming 10 to 15 kt with local gusts to 20 kt after midnight. Strongest western portion. Wind waves 2 to 4 ft. W swell 4 to 6 ft at 9 seconds.
Thu..NW winds 15 to 20 kt...becoming 20 to 25 kt with gusts to 35 kt in the afternoon. Combined seas 6 to 8 ft dominant period 8 seconds...building to 7 to 10 ft dominant period 8 seconds in the afternoon.
Thu night..NW winds 20 to 25 kt with gusts to 35 kt...becoming 10 to 20 kt with gusts to 25 kt after midnight. Combined seas 8 to 11 ft dominant period 9 seconds.
Fri..NW winds 15 to 25 kt with gusts to 35 kt. Combined seas 7 to 10 ft.
Sat..NW winds 10 to 20 kt. Wind waves 1 to 3 ft. W swell 5 to 7 ft.
PZZ600 905 Am Pdt Tue Apr 25 2017
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 16z...or 9 am pdt...a 1027 mb high was located 600 nm W of pt. Conception. A 992 mb thermal low was in the southern plains. Widespread gale force winds are expected across most coastal waters tonight...and across the outer coastal waters through much of the week. Gale force gusts may affect the western portions of the nearshore waters at times through Fri.

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 251236
afdlox
area forecast discussion
national weather service los angeles/oxnard ca
536 am pdt Tue apr 25 2017

Synopsis
Gusty northwest to north winds will likely continue through the
work week for portions of southwest california with weak to
moderate offshore winds possible by this weekend. A gradual
warming trend is expected for most areas through this weekend.

Short term (tdy-thu)
there were plenty of low clouds on northern and interior mountain
slopes, interior sections of slo and sba counties, the santa ynez
valley and southern portions of the central coast. There could be
a few light showers embedded in these clouds which could affect
northern slopes this morning. Otherwise, areas of high clouds
were drifting across the region early this morning. Any low clouds
should clear by late morning, with partly cloudy skies this
afternoon. Gusty NW to N winds continue across the interstate-5
corridor, southern santa barbara county through and below passes
and canyons, the santa clarita valley, and the antelope valley
this morning, and wind advisories in all those areas look good.

Expect advisory level northwest winds once again on the central
coast this afternoon and evening. Locally gusty north winds will
affect the san fernando valley, the valleys of vtu county and the
santa monica mountains.

An upper low was located in wyoming with a trough extending
southwestward into the great basin. There was broad cyclonic
northwesterly flow across the forecast areas. MAX temps
should edge upward a few degrees today as heights and thicknesses
rise slightly. Expect areas of low clouds on northern slopes and
across interior sections of slo and sba county, and possibly
across the santa ynez valley and portions of the central coast
tonight/wed morning, with mostly clear skies elsewhere. Winds
should decrease below advisory levels on the central coast this
evening, across the antelope valley late tonight, and across
southern sba county and the santa clarita valley Wed morning.

However good n-s grads and decent NW winds aloft should make
for windy conditions again Wed afternoon or evening into thu
morning. Wind advisories will likely be needed again on the
central coast Wed afternoon, and southern sba county and
the santa clarita valley Wed evening into Thu morning. Rising
heights and thicknesses should lead to several degrees of warming
in most areas on wed.

An upper low will drop into montana Wed night and thu.

This will cause northwesterly flow aloft to increase across the
region thu, and any lull in the winds Thu morning should be
brief. Additional wind advisories will likely be needed thu.

Max temps should be down a few degrees in most areas thu.

There may be a bit more in the way of stratus Wed night/thu
morning north of pt conception, and plenty of clouds are
expected on northern slopes with a slight chance of showers there
late Wed night into Thu morning

Long term (fri-mon)
the upper low will drop into utah on fri, with fairly strong nw
flow aloft over the forecast area and continued steep n-s
gradients. Gusty NW to N winds will continue to affect similar
portions of the region on fri. Do not expect too much in the way
of stratus Thu night into Fri morning, especially south of pt
conception. MAX temps on Fri should be up a few degrees in most
areas, mainly west of the mountains.

Height and thicknesses will rise over the weekend as an upper
ridge amplifies along the west coast. Low level flow will
turn more northeasterly by sat, and though low level flow will
weaken on Sunday, it will remain offshore, at least in the
morning. Expect MAX temps to jump Sat on, especially west of the
mountains, with highs likely in the lower 90s in the warmer valley
locations. There may be a few degrees of cooling across the
coastal plain on Sunday, especially near the coast, but it will be
very warm elsewhere. As the upper high begins to break down on
Monday, and flow turns onshore, expect cooling in coastal and
valley areas, with little change in temps in the mtns and deserts.

Aviation 25/1200z...

at 1130z, there was no marine layer inversion to speak of around
klax early this morning.

Overall,VFR conditions are expected for most areas away from the
interior locations including the northern mountain slopes. There
will be MVFR patchy CIGS in the vicinity of ksbp and ksmx through
17z this morning as well as kprb. Northerly winds should keep MVFR
cigs away from la/vtu county coastal and valley location over the
next 24 hours. There is a 50% chance that MVFR CIGS could develop
around the central coast and interior areas later today through
tonight. Bands of acsl were streaming across the leeward side of
the tehachapi mtns and could continue through this morning. There
will be some uddf across the mountains and llws is expected
around ksba later this afternoon, and kvny through today.

Klax... Moderate confidence in 12z taf. There is a 20% chance of
MVFR CIGS 10z-15z Wed morning. High confidence inVFR conditions
tonight.

Kbur... High confidence in 12z taf. There is a 30% chance of
llws/turbulence through 18z.

Marine 25/300 am...

for the outer waters, high confidence in current forecast. Strong
northwest winds are anticipated to continue through the week.

Currently, a gale warning is in effect through late Wednesday
night. There is a 70% chance that gale force winds will continue
through Friday.

For the inner waters, moderate confidence in current forecast. A
gale warning has been issued once again valid for this afternoon
for the inner waters south of point conception. Mainly affecting
the western portions. Otherwise, strong small craft advisory (sca)
level winds are expected each afternoon/evening through Friday
with a 30% chance of gale force wind gusts developing.Due to
strong winds throughout the waters, seas will be very choppy this
week, making for hazardous boating conditions through the week.

Lox watches/warnings/advisories
Ca... High surf advisory in effect until 9 am pdt this morning for
zones 34-35-40-41-87. (see laxcfwlox).

Wind advisory in effect from noon today to 9 pm pdt this
evening for zones 34-35. (see laxnpwlox).

Wind advisory in effect until 9 am pdt Wednesday for zones
39-52-88. (see laxnpwlox).

Wind advisory in effect until 9 am pdt Thursday for zones
53-54. (see laxnpwlox).

Wind advisory in effect until 3 am pdt Wednesday for zones
59-87. (see laxnpwlox).

Pz... Small craft advisory in effect until 3 am pdt Wednesday for
zone 645. (see laxmwwlox).

Gale warning in effect from 3 pm this afternoon to 3 am pdt
Wednesday for zones 650-655. (see laxmwwlox).

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

Hazard potential outlook (thu-mon)
gusty north to northwest winds are expected across southern santa
barbara county, the central coast, the i-5 corridor, and the
antelope valley. Advisory level winds expected at times in these
areas Thursday through early Friday, with local warning level
gusts. Elevated surf is possible on the beaches Thursday night
and Friday. Gusty northeast winds are possible across portions of
los angeles and ventura counties Saturday, with well above normal
temperatures expected.

Public... Db
aviation... Ck
marine... Kaplan
synopsis... Munroe
weather.Gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PRJC1 7 mi43 min NNW 4.1 G 9.9
PFXC1 8 mi43 min NW 18 G 21 69°F
PSXC1 8 mi43 min NW 14 G 19
BAXC1 9 mi43 min NNW 17 G 20
46256 9 mi21 min 63°F5 ft
PFDC1 10 mi43 min W 8.9 G 11
PXAC1 10 mi43 min WNW 6 G 8
AGXC1 11 mi43 min NW 9.9 G 12 65°F 1012.3 hPa (+2.0)
OHBC1 - 9410660 - Los Angeles, CA 12 mi43 min 60°F1012.3 hPa (+2.1)
46253 16 mi43 min 60°F6 ft
46222 - San Pedro, CA (092) 18 mi54 min 59°F6 ft
ICAC1 - 9410840 - Santa Monica Pier 27 mi43 min NNW 4.1 G 15 68°F 58°F1011.9 hPa (+1.3)
46221 - Santa Monica Bay, CA (028) 30 mi43 min 57°F7 ft

Wind History for Los Angeles Pier J, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Los Alamitos U. S. Army Airfield, CA1 mi45 minN 010.00 miMostly Cloudy65°F54°F70%1012.5 hPa
Long Beach, Long Beach Airport, CA5 mi50 minNNE 310.00 miFair66°F50°F56%1012 hPa
Fullerton, Fullerton Municipal Airport, CA7 mi50 minSE 59.00 miMostly Cloudy65°F55°F70%1011.9 hPa
Santa Ana, John Wayne Airport-Orange County Airport, CA13 mi50 minVar 410.00 miMostly Cloudy64°F54°F70%1012.2 hPa
Torrance, Zamperini Field Airport, CA14 mi56 minW 1210.00 miMostly Cloudy63°F50°F64%1012.2 hPa
Hawthorne, Hawthorne Municipal Airport, CA17 mi50 minNNW 10 G 1810.00 miFair67°F41°F39%1012.3 hPa
Los Angeles / USC Campus Downtown, CA19 mi56 minVar 510.00 miFair70°F42°F37%1011.5 hPa
Los Angeles, Los Angeles International Airport, CA20 mi50 minNNW 12 G 1710.00 miMostly Cloudy69°F41°F36%1012.1 hPa
El Monte, CA21 mi58 minN 010.00 miPartly Cloudy64°F53°F68%1012.9 hPa

Wind History from SLI (wind in knots)
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Last 24hrS7
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S8SW11--S9S10S10SW11S9W9SW4S5S4SW4S6CalmSE4E4CalmCalmCalmCalmCalmCalm
1 day agoS4S4S7S13S12SW11S11S11S9S8S6S5S4SW3CalmSE3CalmSE3SW3S3SW3S4S3S4
2 days agoCalmS4SW5SW8SW10SW10S8S3NW6W7W4CalmS4S4S6S4SE3W4CalmCalmCalmCalmSW7SE7

Tide / Current Tables for Los Patos (highway bridge), California
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Los Patos (highway bridge)
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Tue -- 04:23 AM PDT     -0.20 feet Low Tide
Tue -- 05:51 AM PDT     Moonrise
Tue -- 06:09 AM PDT     Sunrise
Tue -- 10:19 AM PDT     4.06 feet High Tide
Tue -- 04:21 PM PDT     0.16 feet Low Tide
Tue -- 06:51 PM PDT     Moonset
Tue -- 07:31 PM PDT     Sunset
Tue -- 10:21 PM PDT     5.01 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.52.41.20.3-0.2-0.10.51.62.73.643.93.42.51.50.60.20.312.13.34.454.9

Tide / Current Tables for Long Beach, Inner Harbor, California
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Long Beach
Click for Map
Tue -- 03:18 AM PDT     -0.38 feet Low Tide
Tue -- 05:52 AM PDT     Moonrise
Tue -- 06:10 AM PDT     Sunrise
Tue -- 09:24 AM PDT     4.69 feet High Tide
Tue -- 03:15 PM PDT     0.29 feet Low Tide
Tue -- 06:52 PM PDT     Moonset
Tue -- 07:31 PM PDT     Sunset
Tue -- 09:26 PM PDT     5.73 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.61.30.2-0.3-0.20.51.734.14.64.63.92.91.70.80.30.51.32.53.955.75.64.9

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 (12,3,4,5)
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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.