Saturday, July11, 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 5:50AMSunset 8:07PM Friday July 10, 2020 9:00 PM PDT (04:00 UTC) Moonrise 12:00AMMoonset 11:07AM Illumination 68% Phase: Waning Gibbous; Moon at 20 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- 232 Pm Pdt Fri Jul 10 2020
Tonight..W winds 5 to 10 kt. Wind waves 2 ft or less. S swell 2 ft at 12 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 2 ft or less. S swell 2 ft at 12 seconds. Patchy dense fog with vsby 1 nm or less in the morning.
Sat night..W winds 10 to 15 kt, becoming sw 5 to 10 kt after midnight. Wind waves 1 to 3 ft. Mixed swell W 2 ft at 8 seconds and S 2 ft at 12 seconds. Patchy dense fog with vsby 1 nm or less after midnight.
Sun..Winds variable 10 kt or less, becoming W 10 kt in the afternoon. Wind waves 2 ft or less. S swell 3 to 4 ft at 13 seconds. Patchy dense fog with vsby 1 nm or less in the morning.
Sun night..W winds 10 to 15 kt, becoming S 5 to 10 kt after midnight. Wind waves 2 ft or less. S swell 3 to 4 ft at 12 seconds. Patchy fog after midnight.
Mon..S winds 5 to 10 kt. Wind waves 2 ft or less. S swell 3 to 4 ft at 9 seconds. Patchy fog in the morning.
Mon 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 9 seconds and S 3 ft at 9 seconds. Patchy fog after midnight.
Tue..W winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 ft and S 2 ft. Patchy fog.
Wed..W winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 ft and S 2 ft. Patchy fog.
PZZ600 232 Pm Pdt Fri Jul 10 2020
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 21z, or 2 pm pdt, a 1026 mb high pressure center was located around 700 nm west of san francisco, and a 1010 mb thermal low was located over southern nevada. There will be an extended period of gusty northwest winds across the outer coastal waters through the period, mainly nw of point conception. Hazardous steep seas will develop this week.


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 110033 AFDLOX

Area Forecast Discussion . UPDATED National Weather Service Los Angeles/Oxnard CA 533 PM PDT Fri Jul 10 2020

SYNOPSIS. 10/413 PM.

Afternoon temperatures will be well above normal on Saturday and Sunday then will slowly cool through the week. Coastal low clouds and fog will remain along the coast through the weekend then will become widespread and push into interior valleys by midweek.

SHORT TERM (TDY-MON). 10/212 PM.

The marine inversion early this afternoon was near 700 ft deep at LAX. Low clouds persisted along the immediate Central Coast and SBA County S coast into early this afternoon. These low clouds will probably linger at the beaches for the rest of the day. Otherwise, sunny skies over the region will continue into early evening. The NAM was forecasting pressure gradients from LAX-DAG to be around +7.3 mb late this afternoon. These strong onshore gradients will help to bring breezy to gusty S to W winds to the region this afternoon into early evening, with the highest gusts expected in the Antelope Valley and adjacent foothills. Temps across the forecast area this afternoon are expected to warm to about 3-8 deg above normal away from the immediate coast, with the warmest vlys and lower mtns topping out in the 90s to around 100, except 100-104 in the Antelope Vly.

A large and increasingly strong upper level high pressure system will build over AZ/NM into the weekend. Southern CA will be under the western periphery of the upper level high, with H5 heights over southwestern CA increasing to 596-597 dm on Sat before lowering slightly to around 594-595 dm for Sun. Very weak upper level troffiness should then move into the area on Mon with H5 heights lowering to around 592 dm.

The strong upper level ridging into srn CA will shrink the marine layer depth down to about 600 ft or less tonight thru Sun morning. The marine inversion should increase only slightly to perhaps 800 to 1000 ft deep Sun night into Mon morning. Low clouds and locally dense fog should affect portions of the SBA County Central coast and L.A. County coast tonight and Sat morning, and again Sat night into Sun morning. Low clouds and fog should expand to most coastal areas Sun night into Mon morning. Otherwise, mostly clear skies with just a few hi clouds at times can be expected to continue thru Mon.

Boundary layer, 950 mb and 850 mb temps will warm significantly thru Sun as well. As a result, surface temps will warm significantly thru the period, with very warm overnight lows in the 70s to around 80 this weekend especially in the foothills, lower mtns and deserts. Highs will be about 5-10 deg above normal on Sat, and about 6-12 deg above normal on Sun. The warmest vlys and lower mtns should reach the upper 90s to 104 Sat, and 100-106 on Sun. The Antelope Valley will be even hotter each day, and could reach as high as 104-108 degrees on Sun. Temperatures should turn about 5-10 deg cooler most areas on Mon with the warmest vlys and lower mtns reaching the 90s to near 100 except upper 90s to 103 in the Antelope Vly.

Due to the hot daytime temps and very warm overnight lows this weekend, a Heat Advisory is in effect for the SLO County interior valleys and mtns, the Cuyama Vly, and the L.A. County vlys and mtns from late Sat morning thru early Sun evening. In addition, an Excessive Heat Watch is in effect for the Antelope Valley for Sun. Please see the latest Non-Precipitation Weather Message (LAXNPWLOX) for further details on the Heat Advisories and Excessive Heat Watch.

Onshore gradients (LAX-DAG) are forecast by the NAM to weaken Sat to +6.7 mb in the afternoon, then increase to +8.2 mb Sun afternoon and +9.3 mb Mon afternoon. Breezy to locally gusty S to W winds are expected to persist for many areas during the afternoon and evening hours, with the strongest winds continuing to be in the Antelope Vly and adjacent foothills. Light offshore flow will be possible night and morning hours over SLO/SBA Counties and interior VTU County as well thru the weekend.

LONG TERM (TUE-FRI). 10/212 PM.

Generally good agreement between the EC and GFS for the extended period with weak upper level troffiness lingering over srn CA Tue thru Wed before some upper level ridging slowly moves back in for Thu and Fri.

The marine layer will deepen some thru the period with night and morning low clouds and fog expanding along the coast into some the adjacent vlys thru the period. Otherwise, mostly clear skies will continue Tue thru Fri. Good onshore gradients each afternoon (GFS fcst LAX-DAG up to +9.5 mb by Wed afternoon) will bring more breezy to gusty S-W winds to the region each afternoon and evening, with the strongest gusts in the foothills, mtns and deserts.

There should be minor day-to-day temperature changes each day, with highs several degrees below normal for most areas thru the period. The warmest vlys and lower mtns should generally be in the mid 80s to lower 90s, except 90s to near 100 in the Antelope Vly.

AVIATION. 11/0030Z.

At 00Z at KLAX . The marine layer was 900 feet deep. The top of the inversion was near 2650 feet with a temperature of 27 degrees Celsius.

Overall . Low confidence for coastal TAFs and high confidence inland. IFR/LIFR CIGS and fog (80 percent chance) impacting coastal locations north of Pt Dume from 03-15Z and south of Pt Dume 05-15Z. Inland areas will remain CAVU through the forecast period.

KLAX . Low confidence in the 00Z TAF. Low clouds and fog rolling into terminal after 07Z with IFR conditions likely 11-15Z. VFR conditions expected beyond 16Z. There will not be any east winds greater than 8 kts.

KBUR . High confidence in the 00Z TAF. VFR conditions will prevail.

MARINE. 10/142 PM.

Across the outer waters . Winds will be elevated and gusty to Small Craft Advisory (SCA) level across the northern outer waters as of today and across the remainder of the outer waters beginning Saturday afternoon. The elevated winds will continue through Monday, mostly in the afternoon and evening hours. Otherwise and elsewhere, conditions will remain below SCA level during the forecast period.

Across the nearshore waters of the Central Coast . There is a thirty percent chance of SCA winds Saturday night through Sunday night, otherwise conditions will remain below SCA level through the forecast period.

Across the inner waters south of Point Conception . Winds will increase to SCA level Saturday through Monday from Point Conception to Point Mugu, mostly in the afternoon and evening hours. Otherwise, conditions will be below SCA level during the forecast period.

Steep, hazardous seas will develop across the coastal waters through the coming week.

LOX WATCHES/WARNINGS/ADVISORIES. CA . Heat Advisory in effect from 11 AM Saturday to 8 PM PDT Sunday for zones 37-38-46-51-54-88-547. (See LAXNPWLOX). Excessive Heat Watch in effect from Sunday morning through Sunday evening for zone 59. (See LAXNPWLOX). PZ . Small Craft Advisory in effect from 3 PM Saturday to 3 AM PDT Monday for zones 650-673-676. (See LAXMWWLOX). Small Craft Advisory in effect until 3 AM PDT Monday for zone 670. (See LAXMWWLOX).

.HAZARD POTENTIAL OUTLOOK (MON-FRI).

No significant hazards expected.



PUBLIC . Sirard AVIATION . EB MARINE . Kj SYNOPSIS . Kj

weather.gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46222 - San Pedro, CA (092) 19 mi40 min 69°F2 ft
46221 - Santa Monica Bay, CA (028) 24 mi97 min 70°F3 ft
OHBC1 - 9410660 - Los Angeles, CA 24 mi42 min 65°F1013.9 hPa
46253 25 mi64 min 69°F3 ft
AGXC1 25 mi96 min WSW 7 G 8
PFDC1 26 mi96 min NW 4.1 G 5.1
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 27 mi140 min W 12 G 14 67°F 71°F1014.2 hPa64°F
46256 27 mi34 min 67°F3 ft
PXAC1 27 mi96 min NW 8.9 G 12
BAXC1 28 mi96 min N 5.1 G 7
PFXC1 28 mi42 min NNW 8.9 G 11
PSXC1 28 mi42 min NW 6 G 12
PRJC1 29 mi42 min NNW 5.1 G 8
ICAC1 - 9410840 - Santa Monica Pier 35 mi42 min WSW 7 G 8.9 66°F 69°F1014.1 hPa

Wind History for Angels Gate, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Avalon Catalina Airport, CA14 mi69 minWNW 310.00 miFair79°F53°F41%1012.8 hPa

Link to 5 minute data for KAVX

Wind History from AVX (wind in knots)
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Last 24hrE4SE5SE4SE3CalmNE33E3S3CalmSE3CalmW4Calm34W5CalmCalmS33CalmNW3Calm
1 day agoCalmS3SW3SW3CalmCalmSE5SE5E4E5SE4W3W5NE43W76SW6SW4W4SW4SW5CalmCalm
2 days agoW6CalmS4SE5SE6SE4E3N4CalmCalmN3N4W4NW5CalmNW5SW4W7W7SW6SW3SW5CalmCalm

Tide / Current Tables for Catalina Harbor, California
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Catalina Harbor
Click for Map
Sat -- 01:46 AM PDT     3.94 feet High Tide
Sat -- 05:53 AM PDT     Sunrise
Sat -- 08:54 AM PDT     0.88 feet Low Tide
Sat -- 12:01 PM PDT     Moonset
Sat -- 03:55 PM PDT     4.03 feet High Tide
Sat -- 08:05 PM PDT     Sunset
Sat -- 10:02 PM PDT     2.45 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.63.93.93.73.32.721.410.91.11.62.22.93.53.943.93.63.22.82.62.42.5

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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Los Angeles/Oxnard, CA (0,6,7,8)
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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.