Saturday, November18, 2017 L-36.com


Marine Weather and Tides
La Crescenta-Montrose, 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 4:48PM Saturday November 18, 2017 9:26 AM PST (17:26 UTC) Moonrise 7:31AMMoonset 6:22PM 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- 838 Am Pst Sat Nov 18 2017
Today..From point mugu to santa Monica, ne winds 15 to 20 kt becoming N 10 to 15 kt in the afternoon. Elsewhere, nw winds 5 to 10 kt. Wind waves 2 to 3 ft. W swell 2 to 3 ft at 10 seconds. Patchy dense fog with vsby 1 nm or less 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..Winds variable 10 kt or less, becoming W 10 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 838 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 16z...or 8 am pst...a 1037 mb surface high along the utah-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 near shore waters this morning resulting in locally gusty winds and choppy seas.

7 Day Forecast for Marine Location Near La Crescenta-Montrose, CA
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location: 34.26, -118.28     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 181716
afdlox
area forecast discussion
national weather service los angeles oxnard ca
916 am pst Sat nov 18 2017

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)
a weak upper level ridge of high pressure is building across
southwest california. This in combination with offshore flow
near the surface will result in a gradual warming and drying
trend through the weekend. So far, offshore winds have not
been quite as strong as expected, with gusts generally in the
25 to 35 mph range across favored areas of los angeles and
ventura counties. If winds do not increase during next couple of
hours, will likely have to cancel wind advisory early. As of 9 am,
lax-daggett gradient has peaked at -4.5 mb with minimal upper
level wind support. The offshore winds combined with the warming
and drying conditions across coastal valley areas will bring
elevated fire danger through the weekend.

Meanwhile, some cold air advection across interior sections
combined with the drying air mass and light winds tonight will
result in even colder overnight temperatures tonight across
interior valleys. Currently have a freeze watch for the
slo interior valleys and cuyama valley, with a hard freeze
watch for the antelope valley(where lows are expected to fall
into the mid and upper 20s tonight in coldest areas).

Mostly sunny forecast today, then periodic mid and high
level clouds will stream across the area Sunday into
Monday. More significant warming expected to take place
by Tuesday as upper level ridge of high pressure strengthens
and flow near the surface remains offshore. By Tuesday
afternoon, expecting to see temperatures rise well into
the 80s.

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 18 900 am.

Winds across the outer waters will continue to diminish as they
shift to the northeast this morning. Locally gusty offshore winds
are not very likely across the near shore waters from point mugu
to santa monica with a 30 percent chance of SCA gusts 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... 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).

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... Gomberg rorke
aviation... Kj
marine... Sweet
synopsis... Munroe
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46221 - Santa Monica Bay, CA (028) 34 mi26 min 64°F3 ft
46256 39 mi34 min 62°F3 ft
46222 - San Pedro, CA (092) 44 mi26 min 62°F3 ft
46253 48 mi26 min 63°F3 ft

Wind History for Santa Monica, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Burbank - Bob Hope Airport, CA6 mi33 minW 310.00 miFair64°F42°F45%1020.5 hPa
Los Angeles, Whiteman Airport, CA7 mi91 minN 010.00 miClear57°F41°F55%1022.7 hPa
Van Nuys, Van Nuys Airport, CA12 mi35 minN 11 G 1610.00 miFair66°F30°F27%1020.9 hPa
Los Angeles / USC Campus Downtown, CA17 mi39 minN 310.00 miFair65°F46°F52%1021.1 hPa
El Monte, CA18 mi98 minN 010.00 miFair57°F50°F77%1021.3 hPa
Santa Monica, Santa Monica Municipal Airport, CA18 mi35 minNE 410.00 miFair68°F45°F44%1021.4 hPa
Los Angeles, Los Angeles International Airport, CA23 mi33 minNNE 410.00 miFair67°F54°F63%1021.2 hPa
Hawthorne, Hawthorne Municipal Airport, CA23 mi33 minN 010.00 miFair66°F54°F65%1021.4 hPa

Wind History from BUR (wind in knots)
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Last 24hrCalmS6SW5CalmS6S9S6S45SE5CalmSE5SE5CalmNW4W4CalmCalmCalmCalmCalmCalm3W3
1 day agoS3CalmCalm3S6S5NW4W5W5W5W5W3NW3CalmCalmW3CalmNW3W7CalmNW5CalmSW4Calm
2 days agoSW3S3SE4SE3S5S7S7S4SE4SE5CalmSW3CalmSW3CalmNW5W4NW3CalmSW3SW4CalmCalmCalm

Tide / Current Tables for Santa Monica, Municipal Pier, California
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Santa Monica
Click for Map
Sat -- 02:12 AM PST     1.75 feet Low Tide
Sat -- 03:42 AM PST     New Moon
Sat -- 06:29 AM PST     Sunrise
Sat -- 06:30 AM PST     Moonrise
Sat -- 08:26 AM PST     5.94 feet High Tide
Sat -- 03:24 PM PST     -0.21 feet Low Tide
Sat -- 04:48 PM PST     Sunset
Sat -- 05:24 PM PST     Moonset
Sat -- 09:42 PM PST     4.01 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.72.11.81.92.53.44.55.45.95.85.24.12.81.40.4-0.2-0.10.51.42.53.43.943.7

Tide / Current Tables for Santa Monica, California
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Santa Monica
Click for Map
Sat -- 02:12 AM PST     1.78 feet Low Tide
Sat -- 03:42 AM PST     New Moon
Sat -- 06:29 AM PST     Sunrise
Sat -- 06:30 AM PST     Moonrise
Sat -- 08:26 AM PST     5.98 feet High Tide
Sat -- 03:24 PM PST     -0.18 feet Low Tide
Sat -- 04:48 PM PST     Sunset
Sat -- 05:24 PM PST     Moonset
Sat -- 09:42 PM PST     4.04 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.72.11.81.92.53.54.55.45.95.95.34.22.81.40.4-0.1-0.10.51.52.53.43.943.7

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 (12,3,4,5)
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Ground Weather Radar Station Santa Ana Mtns, CA
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weather_mapweather_map weather_map

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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.