Monday, May29, 2017 L-36.com


Marine Weather and Tides
Avalon, 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 5:43AMSunset 7:59PM Monday May 29, 2017 12:42 AM PDT (07:42 UTC) Moonrise 9:56AMMoonset 11:58PM Illumination 15% Phase: Waxing Crescent; Moon at 4 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- 819 Pm Pdt Sun May 28 2017
Tonight..W winds 5 to 15 kt...becoming S to se 5 to 10 after midnight. Wind waves 2 ft or less. W swell 1 to 2 ft at 7 seconds. Patchy fog.
Mon..Winds S to se 5 to 10 kt...becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 3 ft at 6 seconds.
Mon night..SW winds 5 to 10 kt. Wind waves 2 ft or less. Mixed swell W 3 ft at 7 seconds and sw 2 ft at 16 seconds.
Tue..Winds variable 10 kt or less...becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 3 ft at 8 seconds and sw 2 ft at 15 seconds.
Tue 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 3 ft at 8 seconds and sw 2 ft at 15 seconds.
Wed..Winds variable 10 kt or less...becoming sw 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 3 ft at 8 seconds and sw 2 ft at 14 seconds.
Wed night..W winds 5 to 10 kt. Wind waves 2 ft or less. Mixed swell W 3 ft at 7 seconds and sw 2 ft at 14 seconds.
Thu..W winds 10 to 15 kt. Wind waves 2 ft or less. W swell 1 to 2 ft.
Fri..SW winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and sw 2 ft.
PZZ600 819 Pm Pdt Sun May 28 2017
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 00z...or 5 pm pdt...a 1025 mb high was centered 500 nm W of pt conception and a 1004 mb low was near las vegas.

7 Day Forecast for Marine Location Near Avalon, CA
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location: 33.51, -118.64     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 290553
afdlox
area forecast discussion
national weather service los angeles oxnard ca
1053 pm pdt Sun may 28 2017

Aviation discussion updated...

Synopsis
A weak upper level ridge will breakdown and give way to an upper
level trough across the region early this week and persisting
over much of california through most of the week. Expect more
widespread low clouds and fog with a few showers possible Monday
and Wednesday in the mountains with patchy drizzle for a few
valley and foothill areas by mid week.

Short term (sun-wed)
latest fog product imagery indicated stratus filling in across the
central coast this evening, while much of the so cal bight
remained clear. However, low clouds should fill in this evening
and move in across the coastal areas of los angeles and then
across the ventura county coast overnight. Latest amdar sounding
around lax was around 900 ft deep. Low clouds should move into the
san gabriel valley late tonight into Monday morning. Not as
confident for the san fernando valley and ventura county valleys.

Some stratus should filter into the cahuenga pass possibly
affecting the SE part of the sfv including burbank. The marine
layer depth should increase a bit overnight while the inversion
strengthens some. The strong inversion will not be great news for
people living in and around the mandeville fire area as smoke will
not be able to mix out due to the inversion and should remain
fairly stagnant over the area overnight into early Monday
morning. People suffering from respiratory conditions should stay
indoors until the smoke diminishes.

For Monday, the upper ridge will be nudged further east while an
upper trough moves in across the region. Heights and thickness
lvls will trend down a bit while the surface onshore flow
increases. High temps will be a little cooler than earlier
forecasts were showing. Highs will range from the upper 70s to
lower 80s in the valleys, while coastal areas will range from the
mid 60s to the mid 70s inland. A couple of changes to the forecast
this evening... Have added a slight chance of showers or
thunderstorms in the ventura and santa barbara county mtns for
late Monday afternoon. There will be plenty of instability over
the areas mentioned plus a pool of 700-650 mb moisture that
should at least initiate some showers. If storms do initiate, they
will be elevated and have little trouble growing vertically. The
main concern would be dry lightning and chaotic downdraft winds
when storms collapse. This looks to be limited only to the
ventura sba county mtns for tomorrow. There will be some flat
cumulus build ups across the la county mtns, but lack of moisture
and instability should make for just partly cloudy conditions
over the la county mtns.

The trough axis will persist over the region through Wednesday.

Expect more widespread night through morning low clouds both tue
and wed. The marine layer depth should increase to the coastal
slopes Tue night into Wed morning. Patchy drizzle is possible
across the san gabriel valley foothills Wed morning. Also, looking
at the current models, thunderstorms that were in the forecast for
wed over the local mountains will be pulled down to just showers.

There will be enough PVA with the cyclonic flow to justify
showers, but the convective parameters look nil at this point.

Expect high temps to lower more significantly on Wed to below
normal for this time of year.

Long term (thu-sun)
a trough of low pressure will likely linger along the west coast
into Thursday. Increased onshore flow and a deeper marine layer
will likely continue cooling into Thursday. Patchy night through
morning drizzle or light showers cannot be ruled out between late
Tuesday night through Thursday morning, especially in the
foothills and mountains. A mention of a slight chance of showers
and thunderstorms has been left in place for the mountains on
Wednesday afternoon and evening, but the possibility of night
through morning drizzle will likely need to be addressed.

A brief warm-up should develop for Friday, but model solutions are
handling a developing trough of low pressure to the southwest of
the area poorly for next weekend. The forecast takes a cooler
stance for now as higher confidence exists in a continued strong
onshore flow pattern.

Aviation 29 06z...

at 03z at klax... The inversion was based near 1150 feet. The top
of the inversion was near 4150 feet with a temperature of about
22 degrees celsius.

Overall... Moderate confidence in the current tafs. Lifr ifr
conditions will develop at most coastal locations by 11z then
will clear by 20z. There is a forty percent chance of lifr ifr
conditions at kbur and kvny in the 12z-18z period and a thirty
percent chance at kprb and ksba in the 10z-18z period. Lifr ifr
conditions will likely develop at coastal and adjacent valley
locations after 30 08z. Otherwise and elsewhereVFR conditions
will prevail.

Klax... Moderate confidence in the current taf. Lifr ifr
conditions will develop around 08z and clear by 20z... Then
return again around 30 09z. OtherwiseVFR conditions will
prevail. No east winds above 7 knots are expected.

Kbur... Moderate confidence the current taf. There is a forty
percent chance of lifr ifr conditions in the 12z-18z period.

OtherwiseVFR conditions will prevail.

Marine 28 800 pm...

for the outer waters, high confidence in current forecast. Small
craft advisory (sca) level winds will continue through Friday.

There is a 20% chance of gale force conditions developing in the
afternoon evening hours Tuesday and Wednesday.

For the inner waters, moderate confidence in current forecast. For
the waters north of point sal, SCA level winds are likely each
afternoon evening today through Friday. For the waters south of
point conception, winds and seas are expected to remain below sca
levels through Friday.

Lox watches warnings advisories
Ca... None.

Pz... Small craft advisory in effect until 9 am pdt Tuesday for
zones 645-670-673-676. (see laxmwwlox).

Hazard potential outlook (wed-sun)
no significant hazards expected.

Public... Kaplan hall
aviation... Kj
marine... Gomberg thompson
synopsis... Kaplan
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46222 - San Pedro, CA (092) 19 mi53 min 62°F3 ft
OHBC1 - 9410660 - Los Angeles, CA 24 mi42 min 58°F1015 hPa (+0.0)
46221 - Santa Monica Bay, CA (028) 24 mi42 min 63°F3 ft
AGXC1 25 mi42 min WSW 6 G 8 60°F 1014.9 hPa (+0.0)
46253 25 mi42 min 62°F2 ft
PFDC1 26 mi42 min SSW 4.1 G 4.1
PXAC1 27 mi48 min E 1 G 1
46256 27 mi20 min 59°F2 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 27 mi32 min NE 3.9 G 5.8 59°F 62°F1014.4 hPa57°F
PSXC1 28 mi42 min NE 2.9 G 4.1
BAXC1 28 mi42 min Calm G 1
PFXC1 28 mi42 min SW 4.1 G 5.1 60°F
PRJC1 29 mi42 min WSW 6 G 7
ICAC1 - 9410840 - Santa Monica Pier 35 mi42 min WNW 1.9 G 5.1 59°F 62°F1015 hPa (+0.0)

Wind History for Angels Gate, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Avalon Catalina Airport, CA14 mi51 minN 010.00 miFair53°F50°F89%1014.7 hPa

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Last 24hrNW4W5SW4--SW5SW6W9SW7E3NE5W6W11W9SW10W9SW6SW8SW6SW3CalmS3SE3E3Calm
1 day agoW6W4NW4NW4W4SW7SW4W7W8W5W9W11W106W12SW9W7W9W11SW7SW7SW7SW5SW5
2 days agoSW3SE3SE53SE4S5CalmSW3W6W7SW7W6W5W8W6SW9SW10W11SW9W9W7W6W6W8

Tide / Current Tables for Catalina Harbor, California
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Catalina Harbor
Click for Map
Mon -- 12:08 AM PDT     5.66 feet High Tide
Mon -- 05:46 AM PDT     Sunrise
Mon -- 07:32 AM PDT     -0.98 feet Low Tide
Mon -- 09:55 AM PDT     Moonrise
Mon -- 02:20 PM PDT     3.78 feet High Tide
Mon -- 07:12 PM PDT     2.26 feet Low Tide
Mon -- 07:57 PM PDT     Sunset
Mon -- 11:57 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.75.44.73.52.10.8-0.3-0.9-0.9-0.40.51.72.73.43.83.73.42.92.52.32.42.83.54.2

Tide / Current Tables for Catalina Harbor, Santa Catalina Island, California
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Catalina Harbor
Click for Map
Mon -- 12:03 AM PDT     5.72 feet High Tide
Mon -- 05:46 AM PDT     Sunrise
Mon -- 07:29 AM PDT     -0.97 feet Low Tide
Mon -- 09:55 AM PDT     Moonrise
Mon -- 02:14 PM PDT     3.78 feet High Tide
Mon -- 07:07 PM PDT     2.21 feet Low Tide
Mon -- 07:57 PM PDT     Sunset
Mon -- 11:57 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.75.54.73.52.10.7-0.3-0.9-0.9-0.30.61.72.73.53.83.73.32.82.42.22.42.83.64.3

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 (3,6,7,8)
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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.