Thursday, July18, 2019 L-36.com


Marine Weather and Tides
Rancho Palos Verdes, CA

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6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 5:54AMSunset 8:04PM Thursday July 18, 2019 10:33 AM PDT (17:33 UTC) Moonrise 9:35PMMoonset 7:27AM Illumination 97% Phase: Waning Gibbous; Moon at 16 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- 907 Am Pdt Thu Jul 18 2019
Today..Winds variable 10 kt or less, becoming sw 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 ft at 6 seconds and sw 2 ft at 15 seconds.
Tonight..SW 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 6 seconds and sw 2 ft at 15 seconds.
Fri..Winds variable 10 kt or less, becoming sw 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 ft at 7 seconds and sw 2 ft at 15 seconds.
Fri 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 9 seconds and sw 2 ft at 15 seconds.
Sat..Winds variable 10 kt or less, becoming sw 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 ft at 9 seconds and sw 2 ft at 14 seconds.
Sat night..W winds 10 to 15 kt, becoming 5 to 10 kt after midnight. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 9 seconds and sw 2 ft at 14 seconds.
Sun..W winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 ft and sw 2 ft.
Mon..W winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 ft and S 2 ft.
PZZ600 907 Am Pdt Thu Jul 18 2019
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 1028 mb high was located around 1000 nm W of san francisco, with a 1006 mb low from las vegas to yuma az.


7 Day Forecast for Marine Location Near Rancho Palos Verdes, CA
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location: 33.7, -118.31     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 181703
afdlox
area forecast discussion
national weather service los angeles oxnard ca
1003 am pdt Thu jul 18 2019

Synopsis 18 846 am.

Night through morning low clouds and fog will affect the coast
and adjacent valleys through Saturday, with a decrease in cloud
cover in the valleys Sunday through Wednesday. Otherwise, mostly
clear skies can be expected during the period. Cooler-than-normal
temperatures can be expected through Sunday, then warm to slightly
above normal Monday through Wednesday.

Short term (tdy-sat) 18 1002 am.

Today is expected to be almost a carbon copy of Wednesday. Marine
layer depth is slightly higher at 2300' but onshore flow is about
the same strength and soundings show just minimal temperature
changes in the lower levels.

***from previous discussion***
not much change meteorological parameters either Friday or
Saturday and expect conditions very similar to today. A little
more onshore flow and lower hgts will bring a degree or two of
cooling to the area and will make it the coolest day of the next 7
(and the day that will be missed the most next week when temps
soar) then slightly higher hgts and weak offshore trends will
bring temps back up to todays values on Saturday.

Long term (sun-wed) 18 316 am.

Both the ec and GFS agree that on Sunday a large upper high moves
out of the tx panhande and over to the four corners area where it
will persist through all of next week. The western third of this
upper high will cover SRN ca. Hgts will be in the 592-594dm range.

The onshor gradients will weaken through the period and actual
offshore flow from the north is forecast by next Tuesday. The
marine layer stratus will be smooshed out of the valleys, but will
continue over the coasts during the night through morning.

Afternoon clearing will be a little bit of a challange. On one
hand the gradients are weak enough to support the notion of total
clearing, but on the other the shallow marine layer coupled with
a very strong inversion could well keep the stratus trapped at the
beaches.

Max temps will be above normal away from the beaches and will not
vary much from day to day. Right now the only triple digit heat is
forecast for the antelope valley, but would not be surprised if
max temps came in a little hotter than currentlly forecast.

Current mdl fcst keep the monsoon push away from la county through
Tuesday and then brings a little moisture into the area starting
next Wednesday. Still anytime there is a four corners high a
monsoon push is possible so will have to keep a day to day watch
on it as we draw closer to the start of next week.

Aviation 18 1043z.

At 0758z, the marine layer depth was around 2200 feet deep at
klax. The top of the inversion was was near 3400 feet with a
temperature around 23 degrees celsius.

N of point conception... Moderate confidence with a persistent
stratus pattern with ifr CIGS for coastal TAF sites. There is a
40% chance for brief lifr conds between 12-14z this morning.

Slightly lower confidence for lifr ifr CIGS at kprb between 12-16z
this morning. Timing of stratus scouring will be + - 1 hour. Look
for a similar time pattern once again for lifr ifr stratus once
again late this evening into Fri morning.

S of point conception...

mainly MVFR conditions are expected across coastal TAF sites.

There is a 40% chance that kbur and kvny could go down briefly to
ifr between 12z-14z. Stratus should scour out + 1 hour from taf
times.VFR conditions should develop later today. There is a 30%
chance of MVFR conditions lingering at coastal terminals into the
late afternoon hours.

Klax... MVFR conditions should linger through at least 18z. There
is a 30 percent chance of MVFR conditions lingering until as late
as 22z.

Kbur... There is a 40 percent chance of ifr conditions at kbur
between 12z-14z.VFR conditions should develop between 16z and
18z.

Marine 18 908 am.

For the outer waters... Expect winds will remain below SCA levels
through the period, although near-sca conditions (10 to 20 kt)
are expected Friday and Saturday nights.

For the all of the inner waters, conditions will remain below
advisory levels through at least Monday.

Lox watches warnings advisories
Ca... None.

Pz... None.

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

Public... Mw rorke
aviation... Kaplan
marine... Sweet kaplan smith
synopsis... Sirard
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
OHBC1 - 9410660 - Los Angeles, CA 2 mi52 min 68°F1016.2 hPa
AGXC1 4 mi46 min E 4.1 G 5.1 67°F 1016 hPa
PFDC1 4 mi46 min E 4.1 G 5.1
PXAC1 5 mi52 min SE 5.1 G 5.1
46222 - San Pedro, CA (092) 6 mi41 min 69°F3 ft
46256 6 mi34 min 68°F3 ft
BAXC1 6 mi46 min E 6 G 7
46253 11 mi34 min 69°F3 ft
46221 - Santa Monica Bay, CA (028) 20 mi34 min 69°F3 ft
ICAC1 - 9410840 - Santa Monica Pier 24 mi46 min WSW 8 G 8.9 67°F 71°F1016 hPa
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 39 mi34 min SW 7.8 G 9.7 63°F 69°F1016.2 hPa (+1.0)

Wind History for Los Angeles Pier 400, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Torrance, Zamperini Field Airport, CA7 mi44 minE 310.00 miMostly Cloudy70°F60°F73%1015.6 hPa
Long Beach, Long Beach Airport, CA12 mi41 minVar 310.00 miOvercast70°F60°F71%1015.6 hPa
Los Alamitos Army Airfield, CA15 mi38 minS 410.00 miOvercast71°F59°F67%1015.9 hPa
Hawthorne, Hawthorne Municipal Airport, CA16 mi41 minW 47.00 miMostly Cloudy72°F59°F64%1015.6 hPa
Los Angeles, Los Angeles International Airport, CA17 mi41 minN 08.00 miMostly Cloudy70°F60°F71%1015.3 hPa
Fullerton, Fullerton Municipal Airport, CA21 mi41 minSSE 310.00 miOvercast72°F60°F66%1015.1 hPa
Avalon Catalina Airport, CA21 mi43 minW 67.00 miPartly Cloudy65°F60°F84%1015.4 hPa
Los Angeles / USC Campus Downtown, CA22 mi42 minN 07.00 miMostly Cloudy75°F62°F64%1015 hPa
John Wayne-Orange County Airport, CA23 mi41 minS 510.00 miMostly Cloudy71°F59°F66%1015.5 hPa
Santa Monica, Santa Monica Municipal Airport, CA24 mi43 minSSW 58.00 miMostly Cloudy70°F62°F76%1015.4 hPa

Wind History from TOA (wind in knots)
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Last 24hrE6E7SE4E10E9SE5E6--------------------------E4SE4CalmE3
1 day agoW6W6W8W10W11W11W11W10W9W9--------------------E8SE8E5SE8
2 days agoW9W10W12W11W14W15W15W13W14W9--------------------CalmCalmCalmCalm

Tide / Current Tables for Los Angeles (outer harbor), California
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Long Beach, Terminal Island, California
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Long Beach
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Thu -- 05:21 AM PDT     -0.49 feet Low Tide
Thu -- 05:55 AM PDT     Sunrise
Thu -- 07:27 AM PDT     Moonset
Thu -- 11:53 AM PDT     4.10 feet High Tide
Thu -- 04:35 PM PDT     2.42 feet Low Tide
Thu -- 08:02 PM PDT     Sunset
Thu -- 09:34 PM PDT     Moonrise
Thu -- 10:41 PM PDT     5.91 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.23.92.51.10.1-0.5-0.40.31.32.43.33.94.13.93.42.92.52.52.83.54.45.25.85.9

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 (13,3,4,5)
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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.