Thursday, January23, 2020
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Marine Weather and Tides
Avalon, CA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:54AMSunset 5:16PM Thursday January 23, 2020 11:31 AM PST (19:31 UTC) Moonrise 7:09AMMoonset 5:19PM 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- 231 Am Pst Thu Jan 23 2020
Today..Winds variable 10 kt or less, becoming W 10 kt in the afternoon. Wind waves 2 ft or less. W swell 2 to 3 ft at 12 seconds. Patchy dense fog with visibility 1 nm or less.
Tonight..W winds 10 to 15 kt, becoming nw 5 to 10 kt after midnight. Wind waves 2 ft or less. W swell 2 to 3 ft at 11 seconds.
Fri..NW winds 5 to 10 kt. Wind waves 2 ft or less. W swell 2 to 3 ft at 12 seconds.
Fri night..W winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. W swell 3 ft at 16 seconds, building to 4 to 5 ft at 13 seconds after midnight.
Sat..Winds variable 10 kt or less, becoming sw 10 kt in the afternoon. Wind waves 2 ft or less. W swell 3 to 4 ft at 16 seconds.
Sat night..SW winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. W swell 3 to 4 ft at 15 seconds.
Sun..NW winds 15 to 20 kt with gusts to 25 kt. Combined seas 4 to 6 ft.
Mon..NW winds 20 to 25 kt. Combined seas 6 to 8 ft.
PZZ600 231 Am Pst Thu Jan 23 2020
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 10z or 2 am pst, a 1025 mb surface high was centered around 450 nm sw of point conception, while an inverted trough was over the southern california bight. Dense fog with visibility one nautical mile or less will affect portions of the coastal waters this morning. Northwest flow will increase across the outer waters tonight through Friday with seas building.


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 231749 AFDLOX

Area Forecast Discussion National Weather Service Los Angeles/Oxnard CA 949 AM PST Thu Jan 23 2020

SYNOPSIS. 23/751 AM.

High pressure will keep the area dry through Saturday with slightly above normal temperatures. A very weak cold front will bring increasing cloudiness and a slight chance of rain to mainly northern areas Sunday, along with a return to normal temperatures. Dry and breezy conditions are expected Monday through Wednesday with above normal temperatures.

SHORT TERM (TDY-SAT). 23/935 AM.

Much warmer in most areas today as a ridge of high pressure moves over the area and gradients are lightly offshore. Highs expected to warm up into the low to mid 70s across many coast/valley locations, especially LA/Ventura Counties. Some locally breezy northeast winds in the hills and mountains but below advisory levels.

***From Previous Discussion***

A very weak short wave trough zips across the region tonight, but then ridging develops across the region once again behind this feature on Fri. Gradients stay weakly offshore, so there may still be some locally gusty winds, but expect any northeast winds to be weaker and more localized on Fri than they area today. There could be a degree of two of cooling on Fri, especially across the coastal plain. Do not expect the quick moving weak trough to really assist in developing an organized stratus layer, so expect just varying amounts of highs tonight/Fri, with possibly some local stratus/fog.

There will be some increase in N-S gradients Fri night, so there could be some gusty winds thru and below passes and canyons of the Santa Ynez Range. Otherwise, the positively tilted upper ridge will hold across the region into Sat, and W-E gradients will remain weakly offshore. Cross sections indicate that there will likely be some increase in high clouds on Sat, especially north of Pt Conception, which could knock a couple of degrees off max temps there. Otherwise, mostly minor changes in max temps are expected, generally running near to a few degrees above normal.

LONG TERM (SUN-WED). 23/350 AM.

The ridge will move to the east of the region on Sunday as a weak trough moves into the West Coast. Models have been trending weak and weaker with this system, and it now appears that it may only bring rain, (light at that), to areas north of Pt Conception on Sunday. Elsewhere, expect increasing clouds on Sunday, with some cooling.

Behind that system, ridging will return to the region, so expect dry weather Monday through Wednesday, with a warming trend. It does appear as though there could be an extended period of gusty north winds, which will probably reach at least advisory levels at times.

AVIATION. 23/1747Z.

At 1634Z, there was no marine layer at KLAX. An inversion based at 200 feet topped out at 1800 feet and 17C.

Moderate confidence in the current forecast. There is a chance of VLIFR to LIFR conditions at KPRB after 12Z Fri. VFR conditions should continue at remaining terminals.

KLAX . Moderate confidence in the 18z TAF. There is a 30 percent chance of VLIFR to LIFR conditions at KLAX after 12Z. Otherwise, VFR conditions are expected through the period. Any east winds will remain less than 7 knots.

KBUR . High confidence in the 18z TAF. VFR conditions are expected through the period. No wind impacts are expected at this time.

MARINE. 23/942 AM.

For the Outer Waters, high confidence in the current forecast. Seas will be below SCA levels today, then winds and seas will deteriorate tonight through Friday. High confidence in both SCA level northwest winds and SCA level seas developing. There is a 40 percent chance of gale force winds on Monday.

For the Inner Waters north of Point Sal, moderate-to-high confidence in the current forecast. For today through early Friday, winds and seas will remain below SCA levels. There is a 50 percent chance of SCA northwest winds and SCA level seas on Friday afternoon and night, increasing to 80 percent Saturday through Monday.

For the Inner Waters south of Point Conception, moderate-to-high confidence in the current forecast. Winds and seas are expected to remain below SCA levels through Saturday. There is a 30 percent chance of SCA level winds on Saturday evening across the Santa Barbara Channel. For Sunday and Monday, there is a 70-80 percent chance of SCA level west to northwest winds developing.

BEACHES. 23/948 AM.

High surf could redevelop Saturday and Saturday night at all beaches. There is 50-60 percent chance that a HIGH SURF ADVISORY will be needed. Even larger surf is possible late Sunday through Tuesday.

LOX WATCHES/WARNINGS/ADVISORIES. CA . NONE. PZ . Small Craft Advisory in effect from 3 AM Friday to 3 AM PST Sunday for zones 670-676. (See LAXMWWLOX). Small Craft Advisory in effect from 9 PM this evening to 3 AM PST Sunday for zone 673. (See LAXMWWLOX).

.HAZARD POTENTIAL OUTLOOK (SAT-WED).

There is the possibility of gusty north winds on Monday and Tuesday, especially through the Santa Ynez Range and the Interstate 5 Corridor.



PUBLIC . MW/DB AVIATION . Sweet/Hall MARINE . Sweet/Hall BEACHES . Sweet/Hall SYNOPSIS . TF

weather.gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46222 - San Pedro, CA (092) 19 mi38 min 61°F4 ft
46221 - Santa Monica Bay, CA (028) 24 mi35 min 61°F5 ft
OHBC1 - 9410660 - Los Angeles, CA 24 mi49 min 61°F1021.1 hPa
46253 25 mi31 min 60°F4 ft
AGXC1 25 mi73 min S 5.1 G 5.1
PFDC1 26 mi73 min NNW 2.9 G 4.1
46256 27 mi31 min 60°F3 ft
PXAC1 27 mi73 min NNW 5.1 G 5.1
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 28 mi21 min W 3.9 G 5.8 55°F 60°F1020.9 hPa
BAXC1 28 mi73 min N 5.1 G 5.1
PFXC1 28 mi73 min Calm G 2.9
PSXC1 28 mi73 min NNE 1.9 G 4.1
PRJC1 29 mi73 min NNE 4.1 G 5.1
ICAC1 - 9410840 - Santa Monica Pier 35 mi49 min 58°F 59°F1021.2 hPa

Wind History for Angels Gate, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Avalon Catalina Airport, CA14 mi40 minNNW 310.00 miFair65°F39°F40%1020.5 hPa

Link to 5 minute data for KAVX

Wind History from AVX (wind in knots)
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Tide / Current Tables for Catalina Harbor, California
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Catalina Harbor
Click for Map
Thu -- 01:51 AM PST     1.99 feet Low Tide
Thu -- 06:07 AM PST     Moonrise
Thu -- 06:55 AM PST     Sunrise
Thu -- 07:59 AM PST     5.99 feet High Tide
Thu -- 03:16 PM PST     -1.05 feet Low Tide
Thu -- 04:18 PM PST     Moonset
Thu -- 05:16 PM PST     Sunset
Thu -- 09:46 PM PST     3.71 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.62.122.33455.765.74.83.520.5-0.5-1-0.9-0.20.9233.63.73.4

Tide / Current Tables for Catalina Harbor, Santa Catalina Island, California
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map
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wmap_P
GEOS 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Los Angeles/Oxnard, CA (14,3,4,5)
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Ground Weather Radar Station Santa Ana Mtns, CA
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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 numerous 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.