Thursday, June22, 2017 L-36.com


Marine Weather and Tides
Rancho Palos Verdes, CA

Version 3.4
What's New / NOTES
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 5:42AMSunset 8:08PM Thursday June 22, 2017 5:03 PM PDT (00:03 UTC) Moonrise 4:33AMMoonset 6:43PM Illumination 2% Phase: Waning Crescent; Moon at 28 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- 229 Pm Pdt Thu Jun 22 2017
Tonight..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 ft at 10 seconds and S 3 ft at 14 seconds. Patchy dense fog with vsby 1 nm or less after midnight.
Fri..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 ft at 10 seconds and sw 3 ft at 16 seconds. Patchy dense fog with vsby 1 nm or less in the morning.
Fri night..W winds 10 to 15 kt...becoming 5 to 10 kt after midnight. Wind waves 2 ft or less. Mixed swell W 2 ft at 10 seconds and sw 3 ft at 16 seconds. Patchy dense fog with vsby 1 nm or less after midnight.
Sat..Winds variable 10 kt or less...becoming W 10 to 15 kt in the afternoon. Wind waves 1 to 3 ft. Mixed swell W 2 ft at 10 seconds and sw 3 ft at 16 seconds. Patchy dense fog with vsby 1 nm or less in the morning.
Sat night..W winds 10 to 15 kt...becoming 5 to 10 kt after midnight. Wind waves 1 to 3 ft. Mixed swell W 2 ft at 10 seconds and sw 3 ft at 16 seconds. Areas of fog after midnight.
Sun..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 ft at 10 seconds and sw 2 ft at 16 seconds. Areas of fog in the morning.
Sun night..W winds 10 to 15 kt...becoming nw 5 to 10 kt after midnight. Wind waves 1 to 3 ft. Mixed swell W 2 to 3 ft and sw 2 ft. Areas of fog after midnight.
Mon..W winds 15 to 20 kt with gusts to 25 kt. Combined seas 3 to 5 ft. Areas of fog.
Tue..W winds 15 to 20 kt. Combined seas 3 to 5 ft. Areas of fog.
PZZ600 229 Pm Pdt Thu Jun 22 2017
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 20z...or 1 pm pdt...a 1031 mb high was centered 700 nm northwest of san francisco and a 1000 mb thermal low was centered near las vegas. Areas of dense fog may affect much of the coastal waters through the week.

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 222035
afdlox
area forecast discussion
national weather service los angeles oxnard ca
135 pm pdt Thu jun 22 2017

Synopsis
The high will bring temperatures that are well above normal for the
inland areas and around normal at the coast into Monday. The skies
should be fair except where the onshore flow brings in a coastal
overnight marine layer through next week. A low will approach by
Tuesday for a cooling trend and increasing cloudiness into midweek.

Short term (tdy-sun)
pretty big increase in low lvl southerly flow today resulted in a
significant cooling trend for coastal valleys south of pt
conception today. Farther interior areas above the marine lyr saw
little change other than an increase in winds. Not seeing a lot of
change in the pattern for tomorrow as gradient trends are
generally flat and there are minimal changes aloft. However, interior
areas north of pt conception should see a little cooling from
today as some of that cooler maritime air moves inland. Marine lyr
clouds will again struggle to clear the coast from about malibu
north.

By late Friday into Saturday the low lvl flow is expected to
reverse as surface high pressure strengthens to the north. This is
expected to lead to a noticeable warming trend in most areas
Saturday along with some increase in north winds through the santa
ynez range and i5 corridor. These trends will continue into Sunday
which should be the warmest day of the period. Marine lyr is
expected to shrink in depth and areal coverage with clouds mostly
confined to the beaches north of pt conception and coastal la
county. It's possible the current heat advisory may need to be
expanded to cover some additional valley areas Saturday and or
Sunday.

The NAM continues to show an increase in instability aloft
Saturday as some high level moisture and energy moves in from the
south. There are some decent lapse rates at very high levels but
the moisture is confined to 600mb and above. Not real confident in
this as the other models are much less unstable and don't really
show much in the way of short wave features coming in from the
south. So for now will just indicate some high clouds moving in
Saturday but no thunderstorms. The main concern would be for dry
lightning given the lack of low lvl moisture but right now the
threat appears to be too minimal to include in the forecast.

Long term (mon-thu)
still very warm Monday but an increase in onshore flow should lead
to at least a few degrees of cooling for inland areas. Onshore
flow expected to increase a little each day through Thursday as a
series of troughs moves into the pac nw. Confidence on the extent
of cooling beyond Tuesday is pretty low as models still show a lot
of differences with regard to how fast the high pressure ridge
will weaken and shift east. The GFS remains the coolest and
trending towards that solution for now.

Aviation 22 1800z.

At 1748z at klax... The marine layer depth was 1900 feet. The top
of the inversion was around 3500 feet with a temperature of about
27 degrees celsius.

The marine layer will clear from most coastal sections, but some
taf sites will not clear until late afternoon or not at all. Most
taf sites will haveVFR conditions except for MVFR conditions
where the marine clouds fail to clear out. The marine clouds will
return to the coastal and valley sections with ifr conditions again
tonight into Friday morning. There is good confidence in the 18z
taf forecast.

Klax... Good confidence in the 18z taf. There is a 30 percent
chance of the marine clouds moving in plus or minus two or more
hours than the forecasted time.

Kbur... Good confidence in the 18z taf. There is a 30 percent
chance of the marine clouds moving in plus or minus two or more
hours than the forecasted time.

Marine 22 900 am.

Winds will remain below small craft advisory (sca) level through
Friday then increase to above SCA levels in the outer waters Saturday
through Monday.

A 2-3 foot south swell will last through much of the week and
pose a risk for breaking waves nearshore. People boating or
kayaking near shore should use extra caution this week. A small
(2-3 feet) short period swell will impact the santa barbara
channel and santa monica basin over the weekend.

Although the coverage of dense fog is easing a bit, there is still
the possibility of patchy dense fog during the night and
mornings.

Fire weather 22 1030 am.

Hot and dry conditions will continue through Monday of next week.

The hot conditions will also bring the potential for plume
dominated fires which can create their own intense winds. Onshore
winds will peak today and Friday, which will focus the concerns to
interior los angeles county including the angeles national
forest, highway 14 corridor, and the foothills of the antelope
valley. Weaker but locally breezy northwest winds should follow
Saturday through Monday... Shifting the area of concern to santa
barbara county and the tejon pass.

Tropical moisture aloft will move through the area Friday night and
Saturday. While this should have little impact on humidities at the
surface, this has a 10 percent chance of producing high-based
thunderstorms. Confidence is incredibly low with this, but the
potential for dry lightning exists.

A red flag warning is in effect through 9pm this evening for
the interior los angeles county mountains and foothills where the
driest and windiest conditions of the period are expected.

Otherwise, with rapidly drying fuels vegetation, elevated fire
weather concerns through Monday, primarily over all interior
sections away from the influence of the marine layer. If fire
ignition occurs, dangerous fire behavior should be expected. As
such, the public should be extreme careful when handling potential
ignition sources such as cigarettes, campfires, hand torches and
metallic weed trimmers.

Lox watches warnings advisories
Ca... Heat advisory in effect until 9 pm pdt Sunday for zones
38-52-53. (see laxnpwlox).

Beach hazards statement in effect through Saturday evening
for zones 40-41-87. (see laxcfwlox).

Excessive heat warning in effect until 9 pm pdt Sunday for
zones 54-59. (see laxnpwlox).

Red flag warning in effect until 9 pm pdt this evening for
zone 254. (see laxrfwlox).

Pz... None.

Hazard potential outlook (sun-thu)
hot temperatures with potential heat impacts will continue for
inland areas Sunday.

Public... Mw
aviation... Sweet
marine... Sweet
fire... Kittell
synopsis... Stu
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
OHBC1 - 9410660 - Los Angeles, CA 2 mi64 min 63°F1010.1 hPa (-0.9)
PFDC1 4 mi64 min SSE 7 G 8.9
AGXC1 4 mi64 min SSW 7 G 8 68°F 1010.1 hPa (-1.0)
PXAC1 5 mi64 min SSE 8 G 9.9
PSXC1 6 mi64 min SSW 7 G 11
PFXC1 6 mi64 min S 7 G 8 65°F
BAXC1 6 mi64 min S 8.9 G 11
46256 6 mi42 min 63°F5 ft
46222 - San Pedro, CA (092) 6 mi165 min 66°F4 ft
PRJC1 7 mi64 min SSW 6 G 7
46253 11 mi64 min 66°F4 ft
46221 - Santa Monica Bay, CA (028) 20 mi64 min 66°F3 ft
ICAC1 - 9410840 - Santa Monica Pier 24 mi64 min SW 7 G 8 64°F 68°F1010.2 hPa (-1.0)
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 40 mi44 min SW 5.8 G 7.8 63°F 67°F1009.8 hPa60°F

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 mi2.2 hrsESE 510.00 miPartly Cloudy72°F60°F69%1010.2 hPa
Long Beach, Long Beach Airport, CA12 mi71 minSSW 710.00 miFair70°F60°F71%1009.8 hPa
Los Alamitos Army Airfield, CA15 mi66 minSW 810.00 miA Few Clouds72°F62°F71%1010.1 hPa
Hawthorne, Hawthorne Municipal Airport, CA16 mi71 minWSW 810.00 miFair72°F60°F66%1009.6 hPa
Los Angeles, Los Angeles International Airport, CA17 mi71 minSW 810.00 miA Few Clouds71°F61°F71%1009.7 hPa
Fullerton, Fullerton Municipal Airport, CA21 mi71 minSW 810.00 miFair77°F63°F62%1009.1 hPa
Avalon Catalina Airport, CA21 mi73 minW 510.00 miFair70°F60°F71%1008.8 hPa
Los Angeles / USC Campus Downtown, CA22 mi2.3 hrsN 010.00 miFair79°F61°F54%1009 hPa
John Wayne-Orange County Airport, CA23 mi71 minSW 1110.00 miA Few Clouds70°F62°F76%1009.6 hPa
Santa Monica, Santa Monica Municipal Airport, CA24 mi73 minSW 810.00 miFair70°F60°F71%1009.7 hPa

Wind History from TOA (wind in knots)
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Last 24hrNW13--NW13NW10--------------------SE6SE6SE8S8SE8SE9SE9SE6SE5E5
1 day agoNW14NW14--NW11--------------------NW5NW5NW5NW9NW9NW9NW13NW14NW12NW15
2 days agoNW16NW14
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NW10--------------------NW10NW3NW3NW5NW8NW13NW12NW18NW18
G22
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Tide / Current Tables for Los Angeles (outer harbor), California
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Los Angeles (outer harbor)
Click for Map
Thu -- 02:52 AM PDT     -0.99 feet Low Tide
Thu -- 04:32 AM PDT     Moonrise
Thu -- 05:43 AM PDT     Sunrise
Thu -- 09:11 AM PDT     4.10 feet High Tide
Thu -- 02:11 PM PDT     1.46 feet Low Tide
Thu -- 06:42 PM PDT     Moonset
Thu -- 08:07 PM PDT     Sunset
Thu -- 08:31 PM PDT     6.95 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.70.2-0.7-1-0.60.41.62.83.74.13.93.32.51.81.51.72.43.64.96.16.96.96.14.7

Tide / Current Tables for Long Beach, Terminal Island, California
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Long Beach
Click for Map
Thu -- 02:50 AM PDT     -1.02 feet Low Tide
Thu -- 04:32 AM PDT     Moonrise
Thu -- 05:43 AM PDT     Sunrise
Thu -- 09:09 AM PDT     4.16 feet High Tide
Thu -- 02:09 PM PDT     1.49 feet Low Tide
Thu -- 06:42 PM PDT     Moonset
Thu -- 08:06 PM PDT     Sunset
Thu -- 08:29 PM PDT     7.07 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.70.2-0.8-1-0.60.41.72.93.84.143.42.51.81.51.72.53.75.16.3776.24.7

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 (20,4,5,8)
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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.