Saturday, November18, 2017 L-36.com


Marine Weather and Tides
Avalon, CA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
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 6:28AMSunset 4:49PM Saturday November 18, 2017 6:06 AM PST (14:06 UTC) Moonrise 7:31AMMoonset 6:25PM Illumination 0% Phase: New Moon; Moon at 29 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- 317 Am Pst Sat Nov 18 2017
Today..From point mugu to santa Monica, ne winds 10 to 20 kt with locally gusty winds to 25 kt. Elsewhere, N winds 5 to 10 kt. Combined seas 3 to 5 ft dominant period 11 seconds. Patchy fog in the morning.
Tonight..NW winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 10 seconds and S 2 ft at 13 seconds.
Sun..NW winds 10 to 15 kt, becoming W 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 11 seconds and S 2 ft at 13 seconds.
Sun night..W winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 9 seconds and S 2 ft at 14 seconds.
Mon..NW 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 10 seconds and S 2 ft at 14 seconds.
Mon night..W winds 10 to 15 kt, becoming N 5 to 10 kt after midnight. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 12 seconds and S 2 ft at 14 seconds.
Tue..NW winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and S 2 ft.
Wed..NW winds 10 to 15 kt. Wind waves 2 ft or less. W swell 2 to 3 ft.
PZZ600 317 Am Pst Sat Nov 18 2017
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 1032 mb surface high along the nevada-idaho border will continue to build into the great basin through today while a weak trough remains along the southern california coast. Offshore flow will develop across the nearshore waters this morning resulting in locally gusty winds and choppy seas.

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 181155
afdlox
area forecast discussion
national weather service los angeles oxnard ca
355 am pst Sat nov 18 2017

Aviation discussion updated...

Synopsis
Surface high pressure settling in over the central rockies will
bring weak santa ana winds to portions of southwest california
Saturday. The dry and cool air mass will also support the first
freeze of the season for cooler interior areas this weekend. A
ridge of high pressure building into the region early next week
will bring a warming trend with record heat possible by
thanksgiving.

Short term (tdy-mon)
over the next three days a weak 577 dm ridge moving into the area
today will grow and expand to 585 dm by Monday afternoon. Strong
cold surface pressure over nevada will generate moderate offshore
flow this morning. Offshore flow will continue through Monday but
will weaken some each day.

It will be sunny today except in the cuyama vly where the offshore
flow is pushing some low clouds in from kern county. Sunday will
be sunny. Mondays partly cloudy sky forecast seem a little
overdone as the ridge looks pretty strong and should shunt the
clouds to the north of the area. All of the surrounding offices
wanted to keep the clouds in the forecast so they remain, but
would not be surprised if future shifts agree to mostly clear
skies.

The offshore grads will mix with just a little upper and thermal
support and bring low end advisory level NE santa ana winds gusts
to mountains and most of the vlys of la vta counties this morning
and early afternoon. There will be some more NE gusts Sunday
morning but they will be weaker and sub advisory.

Cool air will be pushed into the interior from the east. The clear
skies and dry air will bring additional cooling to the already
cool air and will bring near freezing conditions to interior vlys
and deserts this morning. More cool air will spill in today and
there is a chc of freezes in the slo and cuyama vlys and even hard
freeze conds in the parts of the antelope vly. Please see the
product laxnpwlox for more details on the frost freeze advisories
and watches.

Max temps will be the main story over the next 3 days ESP over the
coasts and vlys. Today will be 4 to 8 degrees warmer than ydy and
then there will be an additional 1 to 3 degrees of warming both
Sunday and Monday. The cool air intrusion will keep the interior
from warming much today but the warmer trends will start there
Sunday. By Monday MAX temps will be 8 to 12 degrees above normal.

Long term (tue-fri)
on Tuesday the ridge grows further and hgts reach 589 dm. Offshore
flow continues from the north but the e-w grads will be neutral.

Still it will be enough to add a few more degrees to Monday's
already warm readings.

The ridge and the offshore peaks on Wednesday as do MAX temps.

There will be some 15 to 25 mph sub advisory wind gusts in the
morning. MAX temps will increase another 4 to 6 degrees and there
will be plenty of MAX temps in the lower 90s across the vlys and
interior coastal sections. MAX temps will be 15 to 20 degrees
above normal.

The ridge weakens just a touch on thanksgiving as does the
offshore flow. There may be a degree of cooling but more likely
max temps will equal Wednesday's warm values.

The ridge flattens out Friday and this will bring cooling to all
areas but ESP the coast. Still MAX temps will 10 to 15 degrees
above normal.

Aviation 18 12z.

At 10z at klax... There was a weak inversion based around 1000
feet. The top of the inversion was around 1600 feet with a
temperature of about 17 degrees celsius.

Overall... Moderate to high confidence in the current tafs. There
will be periods of moderate wind shear and turbulence at koxr...

kcma... Ksmo... Kvny... And kbur through 15z. Through 17z there
is a fifteen percent chance of ifr MVFR conditions at ksmo...

klax... And klgb. Otherwise and elsewhereVFR conditions will
prevail.

Klax... Moderate to high confidence in the current taf. There is a
fifteen percent chance of ifr MVFR conditions through 17z. Otherwise
vfr conditions will prevail. There is a fifteen percent chance of
east winds to ten knots through 18z and again 19 09z-16z...

otherwise no east winds greater than seven knots are expected
during the forecast period.

Kbur... Moderate to high confidence in the current taf. There will
be periods of moderate wind shear and turbulence through 15z.

There is a less than ten percent chance of MVFR conditions through
17z. OtherwiseVFR conditions will prevail.

Marine 18 200 am.

Winds across the outer waters will continue to diminish as they
shift to the northeast this morning. Locally gusty offshore winds
will develop across the nearshore waters from point mugu to santa
monica by midday and may reach small craft advisory (sca) levels
at times near canyon outlets before diminishing late this afternoon.

Winds speeds across the outer waters will increase on Sunday and
there is a forty percent chance of speeds reaching SCA levels
during the Sunday night through Monday night period.

Lox watches warnings advisories
Ca... Frost advisory in effect until 8 am pst this morning for
zones 37-38. (see laxnpwlox).

Freeze watch in effect from late tonight through Sunday
morning for zones 37-38. (see laxnpwlox).

Wind advisory in effect until 2 pm pst this afternoon for
zones 44>46-53-54-88-547. (see laxnpwlox).

Freeze warning in effect until 8 am pst this morning for zone
59. (see laxnpwlox).

Hard freeze watch in effect from late tonight through Sunday
morning for zone 59. (see laxnpwlox).

Pz... None.

Hazard potential outlook (mon-fri)
no significant hazards expected.

Public... Rorke
aviation... Kj
marine... Kj
synopsis... Munroe
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46222 - San Pedro, CA (092) 19 mi36 min 62°F3 ft
46262 23 mi36 min 66°F3 ft
46221 - Santa Monica Bay, CA (028) 24 mi36 min 63°F3 ft
46253 25 mi36 min 63°F3 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 27 mi36 min NW 1.9 G 3.9 66°F1019.2 hPa
46256 27 mi44 min 62°F3 ft

Wind History for Angels Gate, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Avalon Catalina Airport, CA14 mi75 minN 510.00 miFair55°F51°F87%1019.3 hPa

Wind History from AVX (wind in knots)
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Last 24hrSW7W5NW5W6W7W6NW9W9W9W13W10W9W7W11W8NW8W10W5CalmN3Calm--N5NE5
1 day agoNW4N6N4NW4W5NW6W5SW4W5NW7NW10NW10NW8NW8NW7NW10NW6W6W7W7W6W5NW5NW8
2 days agoN5N3CalmW4N3W33SW4W7W5W8W9W9NW8NW8NW9NW7NW7N6N9N8N6N6N5

Tide / Current Tables for Catalina Harbor, California
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Catalina Harbor
Click for Map
Sat -- 02:28 AM PST     1.59 feet Low Tide
Sat -- 03:42 AM PST     New Moon
Sat -- 06:28 AM PST     Sunrise
Sat -- 06:29 AM PST     Moonrise
Sat -- 08:36 AM PST     5.71 feet High Tide
Sat -- 03:36 PM PST     -0.23 feet Low Tide
Sat -- 04:49 PM PST     Sunset
Sat -- 05:25 PM PST     Moonset
Sat -- 09:50 PM PST     3.86 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.721.61.72.134.155.65.75.14.22.91.60.5-0.1-0.20.31.22.23.13.73.93.6

Tide / Current Tables for Catalina Harbor, Santa Catalina Island, California
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Catalina Harbor
Click for Map
Sat -- 02:25 AM PST     1.63 feet Low Tide
Sat -- 03:42 AM PST     New Moon
Sat -- 06:28 AM PST     Sunrise
Sat -- 06:29 AM PST     Moonrise
Sat -- 08:33 AM PST     5.69 feet High Tide
Sat -- 03:36 PM PST     -0.22 feet Low Tide
Sat -- 04:49 PM PST     Sunset
Sat -- 05:25 PM PST     Moonset
Sat -- 09:48 PM PST     3.86 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.721.71.72.23.14.155.65.65.14.12.91.60.5-0.1-0.20.31.22.23.13.73.83.6

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 (9,2,3,4)
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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.