Saturday, November18, 2017 L-36.com


Marine Weather and Tides
Seal Beach, 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 6:27AMSunset 4:48PM Saturday November 18, 2017 12:07 AM PST (08:07 UTC) Moonrise 7:29AMMoonset 6:23PM 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- 840 Pm Pst Fri Nov 17 2017
Tonight..W winds 10 to 15 kt, becoming nw 15 to 20 kt after midnight. Wind waves 2 to 3 ft. Mixed swell W 2 to 4 ft at 11 seconds and S 2 ft at 14 seconds. Patchy fog after midnight.
Sat..From point mugu to santa Monica, ne winds 15 to 20 kt with local gusts to 25 kt becoming N 10 to 20 kt in the afternoon. Elsewhere, N winds 5 to 10 kt becoming nw in the afternoon. Wind waves 1 to 3 ft. Mixed swell W swell 2 to 4 ft at 11 seconds and S 2 ft at 14 seconds. Patchy fog in the morning.
Sat night..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 16 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 840 Pm Pst Fri Nov 17 2017
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 04z...or 8 pm pst...a 1029 mb surface high along the nevada-idaho border will continue to build into the great basin through Saturday, while a 1018 mb inverted trough remains along the southern california coast. Offshore flow will develop over the inner coastal waters into Saturday morning, possibly bringing advisory level winds and choppy seas.

7 Day Forecast for Marine Location Near Seal Beach, CA
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location: 33.74, -118.12     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 180622
afdlox
area forecast discussion
national weather service los angeles oxnard ca
1022 pm pst Fri nov 17 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 (fri-mon)
high pressure at the surface is starting to build into the great
basin this evening as a cold front exits the region. The front,
now stretching from central arizona into northwest new mexico and
southeastern colorado will continue to march east. Surface high
pressure, driven by the cold air mass in the great basin
will continue to strengthen into Saturday, while an inverted
surface trough develops over the southern california bight and
along the southern california coast.

Onshore flow is weakening this evening as the northerly surface
pressure gradient develops, before turning northeast overnight.

Locally gusty northwest to north winds have developed across
southern santa barbara county this evening. These winds are not
expected to become widespread this evening.

As the pressure gradient become northeast later tonight and into
Saturday morning, marginally gusty santa ana winds will develop.

A wind advisory was added for mainly western los angeles and
eastern ventura counties where these winds will be strongest.

Gusts between 35 mph and 45 mph will develop through Saturday
morning. Motorist traveling across southern california should
exercise caution due to the possibility of gusty cross winds.

A dry air mass moving into the region behind the front will allow
for wind-sheltered areas to radiative cool more efficiently
tonight and again on Saturday night. Frost advisories and freeze
watches posted by the previous shift look agreeable and no changes
were made.

*** from previous discussion ***
on Monday the ridge remains in place but some moisture from a
storm well to the north will manage to get through and increase
clouds across the area, especially north of pt conception. There's
too much subsidence for any precip so rain chances have been
removed, but there will still be a fair amount of clouds,
especially up north. And temps Monday will be similar to Sunday.

Long term (tue-fri)
the ridge will build even stronger Tue and peaking Wed and
thanksgiving. Gradients will trend offshore again and peak
Thursday but just enough for some locally gusty but sub-advisory
level santa ana winds. Temps will make a noticeable jump Wed into
the mid to high 80s for many la ventura valleys and some coastal
areas as well. Slightly cooler up north but still well above
normal. Perhaps even a few isolated lower 90s on thanksgiving day.

Cooler but still warm and dry going into the weekend.

Aviation 18 06z.

At 0530z at klax... There was a weak inversion based around 900
feet. The top of the inversion was around 1600 feet with a
temperature of about 16 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. During the 10z-17z
period there is a sixty five percent chance of ifr MVFR conditions
at klgb and a forty percent chance of ifr MVFR conditions at
kprb... Ksmo... And klax. Otherwise and elsewhereVFR conditions
will prevail.

Klax... Moderate to high confidence in the current taf. There is a
forty percent chance of ifr MVFR conditions during the 10z-17z
period. OtherwiseVFR conditions will prevail. There is a ten
percent chance of east winds to ten knots 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 is
a twenty percent chance of moderate wind shear and turbulence
through 15z. There is a twenty five percent chance of MVFR
conditions during the 12z-17z period. OtherwiseVFR conditions
will prevail.

Marine 17 900 pm.

Northwest winds across the outer waters will continue to diminish
as surface high pressure to the north slides into the great basin
later tonight. Winds will subside across the outer waters later
tonight, while winds will start increase nearshore on Saturday
morning. There is a 50 percent chance that a small craft advisory
could be added for the nearshore waters from rincon point to
santa monica. At the minimum, locally gusts winds and choppy seas
will develop on Saturday across the inner coastal waters.

Gusty winds will increase again between Saturday evening and
Sunday afternoon. Small craft advisories may need to be issued
sometime between Saturday evening and Sunday morning as winds look
to increase to advisory levels during this period. Winds will
remain at small craft levels across the outer waters through late
Monday night or early Tuesday morning.

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

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

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

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

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

Pz... Small craft advisory in effect until 3 am pst Saturday for
zones 673-676. (see laxmwwlox).

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

Public... Hall mw
aviation... Kj
marine... Hall
synopsis... Munroe
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46256 5 mi46 min 62°F3 ft
46253 12 mi38 min 63°F2 ft
46222 - San Pedro, CA (092) 13 mi38 min 63°F3 ft
46221 - Santa Monica Bay, CA (028) 28 mi38 min 63°F4 ft
46262 47 mi38 min 66°F4 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 49 mi38 min SSW 5.8 G 7.8 66°F1019.2 hPa

Wind History for Los Angeles Pier J, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Los Alamitos Army Airfield, CA5 mi70 minESE 310.00 miFair58°F55°F94%1019.6 hPa
Long Beach, Long Beach Airport, CA6 mi75 minESE 310.00 miFair61°F55°F81%1019.3 hPa
Fullerton, Fullerton Municipal Airport, CA12 mi75 minNE 410.00 miFair62°F57°F86%1019.1 hPa
Torrance, Zamperini Field Airport, CA12 mi4.3 hrsW 1010.00 miClear63°F55°F77%1017.9 hPa
John Wayne-Orange County Airport, CA14 mi75 minESE 410.00 miA Few Clouds63°F59°F87%1019.3 hPa
Hawthorne, Hawthorne Municipal Airport, CA18 mi75 minESE 310.00 miFair62°F54°F75%1019.3 hPa
Los Angeles, Los Angeles International Airport, CA20 mi75 minE 510.00 miFair60°F55°F84%1019.1 hPa
Los Angeles / USC Campus Downtown, CA21 mi81 minESE 310.00 miFair63°F55°F78%1018.9 hPa

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Last 24hrCalmCalmCalmCalmE3CalmCalmCalmNW4W5W5W5SW8S9SW8SW9S5S3CalmCalmS3CalmE3Calm
1 day agoNE3CalmCalmCalmCalmN4CalmCalmCalmN3SE3CalmSW4S5S4W6W6W4CalmCalmCalmCalmCalmCalm
2 days agoCalmCalmCalmCalmCalmCalmCalmCalmNW4CalmCalmE3CalmSW9S6S3CalmCalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for Los Patos (highway bridge), California
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Los Patos (highway bridge)
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Sat -- 03:20 AM PST     1.04 feet Low Tide
Sat -- 03:42 AM PST     New Moon
Sat -- 06:27 AM PST     Sunrise
Sat -- 06:28 AM PST     Moonrise
Sat -- 09:22 AM PST     5.02 feet High Tide
Sat -- 04:31 PM PST     -0.14 feet Low Tide
Sat -- 04:47 PM PST     Sunset
Sat -- 05:23 PM PST     Moonset
Sat -- 10:37 PM PST     3.40 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.821.41.11.11.72.63.64.554.94.43.52.41.30.4-0.1-0.10.41.22.12.93.33.4

Tide / Current Tables for Long Beach, Terminal Island, California
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Long Beach
Click for Map
Sat -- 02:10 AM PST     1.67 feet Low Tide
Sat -- 03:42 AM PST     New Moon
Sat -- 06:27 AM PST     Sunrise
Sat -- 06:29 AM PST     Moonrise
Sat -- 08:23 AM PST     6.06 feet High Tide
Sat -- 03:21 PM PST     -0.34 feet Low Tide
Sat -- 04:47 PM PST     Sunset
Sat -- 05:23 PM PST     Moonset
Sat -- 09:39 PM PST     4.10 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.621.71.82.53.54.65.565.95.34.12.71.30.2-0.3-0.20.41.42.53.544.13.7

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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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.