Friday, April20, 2018 L-36.com


Marine Weather and Tides
Rossmoor, 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 6:12AMSunset 7:29PM Friday April 20, 2018 8:51 PM PDT (03:51 UTC) Moonrise 10:08AMMoonset 12:00AM Illumination 32% Phase: Waxing Crescent; Moon at 6 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 Fri Apr 20 2018
Tonight..W winds 10 to 15 kt, becoming se 5 to 10 kt after midnight. Wind waves 1 to 3 ft, becoming 2 ft or less. W swell 3 to 4 ft at 8 seconds. Patchy fog after midnight.
Sat..SE winds 5 to 10 kt, becoming W 10 to 15 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 17 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 to 3 ft at 10 seconds and S 2 ft at 16 seconds. Patchy fog after midnight.
Sun..S winds 5 to 10 kt, 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 15 seconds. Patchy fog in the morning.
Sun night..W winds 10 to 15 kt, becoming se 5 to 10 kt after midnight. Wind waves 2 ft or less. Mixed swell W 2 ft at 14 seconds and S 2 ft at 15 seconds. Patchy fog after midnight.
Mon..SE winds 5 to 10 kt, becoming sw 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 ft at 14 seconds and S 2 ft at 14 seconds. Patchy fog in the morning.
Mon night..SW winds 10 to 15 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. S swell 2 ft at 13 seconds. Patchy fog after midnight.
Tue..SW winds 5 to 10 kt. Wind waves 2 ft or less. S swell 2 ft. Patchy fog.
Wed..W winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and S 2 ft. Patchy fog.
PZZ600 817 Pm Pdt Fri Apr 20 2018
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 1033 mb surface high was centered 600 nm west of eureka, with a weak inverted trough along the sw california coast. The high will push inland over the pac nw through the weekend while thermal low pres sets up over the four corners region.

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 210008
afdlox
area forecast discussion... Updated
national weather service los angeles oxnard ca
508 pm pdt Fri apr 20 2018

Synopsis 20 508 pm.

A high pressure system will bring above normal temperatures into
Monday for the inland areas. An eddy will usher in overnight coastal
low clouds and fog from Saturday into Monday. Then a low should
arrive by Tuesday for increasing onshore flow and a cooling trend
west of the mountains through Friday.

Short term (tdy-mon) 20 146 pm.

Pretty quiet weather pattern next several days. A ridge of high
pressure will build tonight along the west coast and should shrink
the marine layer depth quite a bit. Profilers and soundings
already showing impressive warming aloft which confirms the
presence of the ridge. Gradients also turn lightly offshore sat
morning. Probably not enough to keep low clouds away from at least
the coastal areas but enough to generate decent warming inland and
maybe a couple degrees at the coast.

Sunday and Monday look like pretty solid marine layer days at
least for coast and coastal valleys. The ridge weakens Saturday
night and a trough will pass north of the area Sunday. This will
deepen the marine layer and increase onshore flow through at least
early next week, bringing cooler temps inland but still near to
slightly above normal.

Long term (tue-fri) 20 158 pm.

Models seem to have settled down on a solution for next week,
keeping the upper low well west of the coast through at least the
middle of the week, then lifting it northeast into the pac nw
Friday night into Saturday. This will keep some ridging along the
coast going through mid week at least, however onshore flow
strengthens slightly each day. So it looks like the marine layer
should be a consistent feature for coast and coastal valleys next
week with temps near to slightly above normal. A strong onshore
push will likely cool temps to below normal by the end of the week
with some gusty winds in the antelope valley.

Aviation 21 0003z.

At 22z, the marine layer depth was around 1800 feet deep at klax.

The top of the inversion was near 2500 feet with a temperature
around 17 degrees celsius.

Moderate-to-high confidence in the current forecast. High
confidence in timing, moderate confidence in flight categories.

North of point conception...VFR conditions are expected through
at least 03z, then there is a chance of lifr to ifr conditions at
coastal terminals through 10z.VFR conditions are expected
throughout the remainder of the period.

South of point conception...VFR conditions are expected through
at least 08z, then there is a chance of ifr to MVFR conditions at
coastal terminals through 16z. The highest chance of sub-vfr
conditions is expected at los angeles county coastal terminals.

There is a very slight chance that MVFR conditions could linger at
coastal terminals through Saturday afternoon.

Klax...VFR conditions are expected through at least 08z, or as
late as 13z. Then, there is a 60 percent chance of ifr to MVFR
conditions through 16z. There is a 10 percent chance that MVFR
conditions could linger through 20z.

Kbur...VFR conditions are expected throughout the period, except
for 10 percent chance of ifr to MVFR conditions between 13z and
15z.

Marine 20 122 pm.

Low confidence on fog forecast, but dense fog is possible now
through the weekend. High confidence in widespread short period
seas into tonight, with decreasing heights.

High confidence in small craft advisory (sca) winds from the
central coast the san nicolas island through tonight, with weaker
and more borderline SCA over the weekend. Over the inner waters
from the santa barbara channel to the san pedro channel, SE winds
will form each morning through at least morning, up to 15 kt
through the passages and channels. Typical onshore winds expected
in the afternoon, with near SCA west winds on the far western
santa barbara channel.

Lox watches warnings advisories
Ca... None.

Pz... Small craft advisory in effect until 3 am pdt Saturday for
zones 645-676. (see laxmwwlox).

Small craft advisory in effect until 3 am pdt Sunday for
zones 670-673. (see laxmwwlox).

Hazard potential outlook (mon-fri)
No significant hazards expected.

Public... Mw
aviation... Hall
marine... Kittell
synopsis... Stu hall
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PRJC1 7 mi52 min SW 12 G 13
PFXC1 8 mi52 min SW 12 G 13 59°F
PSXC1 8 mi52 min N 1.9 G 6
BAXC1 9 mi58 min NNE 5.1 G 5.1
46256 9 mi82 min 56°F3 ft
PFDC1 10 mi52 min S 7 G 8
PXAC1 10 mi52 min ENE 4.1 G 6
AGXC1 11 mi58 min S 12 G 13 57°F 1018.9 hPa
OHBC1 - 9410660 - Los Angeles, CA 12 mi52 min 57°F1018.9 hPa (+1.0)
46253 16 mi82 min 58°F2 ft
46222 - San Pedro, CA (092) 18 mi82 min 56°F4 ft
ICAC1 - 9410840 - Santa Monica Pier 27 mi52 min W 5.1 G 6 56°F 59°F1018.8 hPa (+0.4)
46221 - Santa Monica Bay, CA (028) 30 mi82 min 57°F4 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 mi1.9 hrsSW 710.00 miFair64°F48°F58%1018.2 hPa
Long Beach, Long Beach Airport, CA5 mi59 minNW 610.00 miFair62°F48°F62%1018.7 hPa
Fullerton, Fullerton Municipal Airport, CA7 mi59 minSW 510.00 miFair65°F48°F54%1018.3 hPa
John Wayne-Orange County Airport, CA13 mi59 minSW 510.00 miFair61°F50°F67%1018.9 hPa
Torrance, Zamperini Field Airport, CA14 mi65 minW 710.00 miClear61°F46°F59%1018.3 hPa
Hawthorne, Hawthorne Municipal Airport, CA17 mi59 minWSW 710.00 miFair59°F52°F78%1018.6 hPa
Los Angeles / USC Campus Downtown, CA19 mi65 minVar 310.00 miFair59°F50°F72%1018.3 hPa
Los Angeles, Los Angeles International Airport, CA20 mi59 minWSW 1010.00 miFair58°F52°F81%1018.4 hPa
El Monte, CA21 mi61 minSSW 410.00 miFair64°F46°F52%1018.3 hPa

Wind History from SLI (wind in knots)
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Last 24hrSE3CalmSE3SE4E3E4SE4CalmE4E3NE5SE4CalmCalmN6N5NW3SW14SW18SW17SW11S6SW7S3
1 day agoCalmS3S3CalmSW10SW6CalmW3W5CalmS3W3S4S8SW8SW5SW8SW10SW16SW14W10W10SW8S4
2 days agoCalmCalmCalmCalmCalmCalmCalmE3CalmCalmNE4CalmS7S7S8S7SW11S9SW10S10S11S9SW9SW6

Tide / Current Tables for Los Patos (highway bridge), California
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Los Patos (highway bridge)
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Fri -- 01:14 AM PDT     4.57 feet High Tide
Fri -- 06:15 AM PDT     Sunrise
Fri -- 08:52 AM PDT     -0.19 feet Low Tide
Fri -- 10:08 AM PDT     Moonrise
Fri -- 03:29 PM PDT     2.72 feet High Tide
Fri -- 07:27 PM PDT     Sunset
Fri -- 07:59 PM PDT     1.42 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.24.64.543.22.21.20.5-0-0.20.10.61.31.92.42.72.72.41.91.61.41.622.7

Tide / Current Tables for Long Beach, Inner Harbor, California
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Long Beach
Click for Map
Fri -- 12:19 AM PDT     5.16 feet High Tide
Fri -- 06:16 AM PDT     Sunrise
Fri -- 07:47 AM PDT     -0.29 feet Low Tide
Fri -- 10:08 AM PDT     Moonrise
Fri -- 02:36 PM PDT     3.16 feet High Tide
Fri -- 06:56 PM PDT     2.30 feet Low Tide
Fri -- 07:27 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.15.14.53.62.51.40.4-0.1-0.300.61.42.22.83.13.132.72.42.32.42.83.44

Weather Map and Satellite Images
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wmap_P
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 (23,6,7,8)
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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.