Tuesday, September17, 2019 L-36.com


Marine Weather and Tides
Avalon, CA

Version 3.4
NOTICE
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.
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Sunrise 6:37AMSunset 6:59PM Tuesday September 17, 2019 1:39 PM PDT (20:39 UTC) Moonrise 9:13PMMoonset 9:41AM Illumination 86% Phase: Waning Gibbous; Moon at 18 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- 902 Am Pdt Tue Sep 17 2019
Today..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 to 3 ft at 7 seconds and S 3 ft at 12 seconds.
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 to 4 ft at 7 seconds and S 3 ft at 12 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 2 to 3 ft at 8 seconds and S 3 ft at 12 seconds.
Wed night..W winds 10 to 15 kt, becoming S 5 to 10 kt after midnight. Wind waves 2 ft or less. Mixed swell W 2 to 4 ft at 8 seconds and S 3 ft at 12 seconds.
Thu..E winds 5 to 10 kt, becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 7 seconds and S 2 ft at 12 seconds.
Thu night..W winds 10 to 15 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. W swell 3 to 5 ft at 8 seconds.
Fri..SW winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and S 2 ft.
Sat..W winds 5 to 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and S 2 ft.
PZZ600 902 Am Pdt Tue Sep 17 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 1018 mb surface high was centered about 400 nm N of point conception, and a 1009 mb thermal low was centered across southwest arizona. Moderate northwest winds will impact the outer coastal waters, and portions of the inner waters through Thursday.


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 171839
afdlox
area forecast discussion
national weather service los angeles oxnard ca
1139 am pdt Tue sep 17 2019

Synopsis 17 653 am.

Temperatures will remain relatively cool across the region
through Friday then gradual warming returns this weekend. Most
coastal and adjacent valleys will have overnight and morning low
clouds and fog at times this week and there will be locally gusty
winds west of santa barbara in the afternoon and evening hours.

Short term (tdy-thu) 17 941 am.

What little marine layer we had this morning has mostly cleared
leaving behind sunny skies. Gradients trending 1-3mb weaker this
morning following the trough passage last night into the great
basin. This has resulted in some increase in northeast winds in
parts of the central coast and the sundowners last night in SRN sb
county. However, because the trough brought in much cooler air
with it temperature trends will be pretty flat today, + - a few
degrees depending on proximity to downsloping winds. Far interior
areas (interior slo, higher hills and mountains, and antelope
valley) will generally be cooler while coast valley areas with
northeast winds will be on the warmer side. Also as mentioned in
previous discussion the inversion is weak (hence the rather patchy
low clouds this morning) and it won't be much stronger tonight
either though an eddy is expected to develop that should help
increase coverage south of sb county.

Sundowner winds expected to return to SRN sb county this evening
though models are indicating a slightly lower northerly pressure
gradient. Likely another evening of near advisory level gusts
around gaviota but generally no stronger than 15-25 elsewhere
across SRN sb county.

***from previous discussion***
a trof will move into the state from the NW on Wednesday. The
lowering hgts will knock a few more degrees off of the MAX temps.

The trof will move through the state Wed night and Thursday.

The lowering hgts and stronger onshore flow will increase the
marine layer cloud coverage and continue the cooling trend. Max
temps will come in right around normal at the beaches but
everywhere else will be blo normal - about 10 degrees blo normal
from the vlys and inland.

Long term (fri-mon) 17 304 am.

Weak ridging will build in Friday in the wake of Thursday's trof.

Hgts will rise and offshore flow will develop from the north while
the easterly onshore gradient will weaken substantially. There
will only be minimal marine layer cloud coverage and it will
mostly be confined to the la county coast. There will be a little
warming on Friday and then a 4 to 8 degree warm up on Saturday
with little change on Sunday as the ridge begins to break down.

A fast moving trof is forecast by both the ec and the GFS to zip
down the state on Monday. The ec is stronger and much cooler than
the GFS which is a little more inside and would produce a windier
pattern than the cooler ec. Just trended into the cooling trend
with the GFS forecast and will lower temps more if ec looks like
the way to go.

Aviation 17 1838z.

At 1543z at klax, the marine layer was 1100 feet deep. The top of
the inversion was near 3100 feet with a temperature of 18 c.

Low confidence in the 18z TAF package, mainly coastal sections.

The current marine cloud coverage has come to an abrupt end this
morning. Mixed signals in the prospects for marine clouds for
tonight and Wednesday morning are the reason that this will not be
an easy forecast in south coastal sections. The current forecast
keeps MVFR conditions confidence is much higher in the valley and
desert TAF sites whereVFR conditions are expected for the next 24
hours. There is a 50 percent chance of marine cloud coverage on
the central coast tonight, perhaps a better chance at ksmx than
ksbp.

Klax... Low confidence in 18z taf. There is a 40% chance that MVFR
cigs will not develop after 09z. There is a 30 percent chance of
east wind component greater than 6 kt after midnight.

Kbur... Moderate confidence in 18z taf. A 30 percent of MVFR haze
or CIGS from 11z-16z.

Marine 17 925 am.

Moderate confidence in the current forecast.

For the outer waters, small craft advisory (sca) level winds are
likely to persist through Thursday, and continuing over the two
southern zones (pzz673-676) through Friday. Lighter winds are
expected over the weekend.

Across the inner waters north of pt sal, there is a 60 percent
chance of SCA level winds this afternoon and evening. There is a
60-70% chance for (sca) for NW wind gusts Wednesday and Thursday
afternoon and evening hours. Lighter winds expected Friday.

Across the santa barbara channel, there is a 60 percent chance of
sca level winds across western portions during the late afternoon
and evening hours Tuesday through Wednesday. SCA conditions are
likely Thursday in the west channel.

Across the remainder of the southern inner waters, conditions
will remain below SCA levels through Wednesday night. 30% chance
of SCA conditions developing Thursday afternoon and evening across
the NW portion.

Beaches 17 921 am.

A southerly swell originating from hurricane kiko will likely
bring strong rip currents to area beaches. A high rip current
risk is expected during this period. There is a 50 percent chance
that elevated surf between 3 and 5 feet will occur today and
tonight mainly along the los angeles county coast. When in doubt,
swim near a lifeguard or avoid the water.

Lox watches warnings advisories
Ca... None.

Pz... Small craft advisory in effect from 3 pm this afternoon to 9
pm pdt this evening for zones 645-650. (see laxmwwlox).

Small craft advisory in effect until 3 am pdt Thursday for
zones 670-673-676. (see laxmwwlox).

Hazard potential outlook (thu-mon)
No significant hazards expected.

Public... Mw rorke
aviation... Sweet kaplan
marine... Sweet kaplan
beaches... Sweet boldt
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 mi46 min 73°F3 ft
46221 - Santa Monica Bay, CA (028) 24 mi43 min 72°F3 ft
OHBC1 - 9410660 - Los Angeles, CA 24 mi57 min 69°F1015.3 hPa
46253 25 mi39 min 74°F3 ft
AGXC1 25 mi57 min S 5.1 G 5.1
PFDC1 26 mi57 min SSE 5.1 G 7
46256 27 mi39 min 71°F3 ft
PXAC1 27 mi57 min S 6 G 8
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 28 mi39 min W 7.8 G 9.7 67°F 72°F1015.2 hPa (+0.0)67°F
BAXC1 28 mi57 min E 7 G 8
PFXC1 28 mi51 min S 7 G 8
PSXC1 28 mi51 min S 5.1 G 8.9
PRJC1 29 mi51 min SSW 5.1 G 6
ICAC1 - 9410840 - Santa Monica Pier 35 mi57 min WSW 7 G 8.9 69°F 64°F1015.1 hPa

Wind History for Angels Gate, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Avalon Catalina Airport, CA14 mi48 minW 810.00 miFair71°F60°F68%1013.9 hPa

Link to 5 minute data for KAVX

Wind History from AVX (wind in knots)
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Last 24hrW7W6W8SW5SW6SW9SW10W6NW5N5CalmCalmE4E5CalmNW3NE4SE5SE5SE6W435W8
1 day agoSW7SW9SW7SW11SW8W6W7W6W4SW4CalmCalmS3S3SW43N4SW5W7W5CalmCalmSW4W8
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Tide / Current Tables for Catalina Harbor, California
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Catalina Harbor
Click for Map
Tue -- 05:30 AM PDT     1.27 feet Low Tide
Tue -- 06:38 AM PDT     Sunrise
Tue -- 09:40 AM PDT     Moonset
Tue -- 11:44 AM PDT     4.77 feet High Tide
Tue -- 06:08 PM PDT     1.25 feet Low Tide
Tue -- 06:57 PM PDT     Sunset
Tue -- 09:12 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.443.22.41.71.31.31.72.43.34.14.74.84.43.72.92.11.51.31.41.92.53.33.8

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 (16,3,4,5)
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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.