Friday, April20, 2018 L-36.com


Marine Weather and Tides
La Crescenta-Montrose, CA

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
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.

Sunrise 6:12AMSunset 7:30PM Friday April 20, 2018 1:31 PM PDT (20:31 UTC) Moonrise 10:07AMMoonset 12:00AM Illumination 29% Phase: Waxing Crescent; Moon at 5 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- 900 Am Pdt Fri Apr 20 2018
Today..SE winds 5 to 15 kt, becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 3 to 4 ft at 8 seconds.
Tonight..W winds 10 to 15 kt, becoming se 5 to 10 kt after midnight. Wind waves 2 ft or less. W swell 3 to 4 ft at 7 seconds. Patchy fog after midnight.
Sat..SE 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 8 seconds and S 2 ft at 17 seconds. Patchy fog in the morning.
Sat night..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 3 ft at 15 seconds and S 2 ft at 16 seconds. Patchy fog after midnight.
Sun..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 15 seconds and S 2 ft at 16 seconds. Patchy fog in the morning.
Sun night..W winds 10 to 15 kt, becoming variable 10 kt or less after midnight. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 15 seconds and S 2 ft at 16 seconds. Patchy fog after midnight.
Mon..Winds variable 10 kt or less early, becoming W 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 to 4 ft and S 2 ft. Patchy fog.
Tue..W winds 15 to 25 kt. Combined seas 4 to 6 ft. Patchy fog.
PZZ600 900 Am Pdt Fri Apr 20 2018
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 15z...or 8 am pdt...a 1032 mb surface high was centered 900 nm west of san francisco, while a 1008 mb low was over colorado. The high will push into oregon over the weekend while a 1008 mb thermal low sets up over southeast arizona.

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 201752
afdlox
area forecast discussion
national weather service los angeles oxnard ca
1052 am pdt Fri apr 20 2018
updated aviation section

Synopsis 20 928 am.

High pressure and offshore flow will bring above normal temperatures
from Friday into Monday. An eddy will usher in overnight coastal
low clouds and fog from Saturday into Monday. Then a low should
arrive by Tuesday for increasing onshore flow and a cooling trend
through Friday.

Short term (tdy-sun) 20 912 am.

The upper low has exited the area and a weak ridge of high
pressure will take its place through Saturday. Already seeing
decent warming aloft and some of that will translate to the
surface as well so some warming today and more so Saturday,
especially inland. Coastal areas will still have a marine layer
and light onshore flow to deal with so quite a bit cooler there.

With the ridge building today the marine layer depth should lower
overnight and there could be some areas of dense fog, especially
north of pt conception.

***from previous discussion***
overall, Saturday and Sunday will be fairly similar. A weak to
moderate eddy will spin up low clouds and fog to coastal areas
south of point conception by morning each day. A weak sundowner
may delay the onset of low clouds for the sba south coast Sunday
night. Away from the coast temperatures will be warmer with highs
in the mid 70s to mid 80s common.

Long term (mon-thu) 20 333 am.

Below normal confidence continues for later next week. This is
mainly due to the erratic and hard to predict nature of cut-off
low pressure systems.

Ridging aloft will gradually weaken, giving way to gradually
increasing onshore flow through the middle of next week ahead of
slow moving cut-off low pressure system approaching from the west.

Slowly lowering heights and an earlier sea breeze making it
further inland should combined to provide a gradual cooling trend
for much of next week. The southwesterly flow and lowering heights
should help develop low clouds across the remainder of southwest
california and low clouds possibly making into valley areas by the
middle of next week. Mid and high clouds are possible at times
with high level moisture riding up and over the ridge. The
increasing onshore flow will likely support breezy onshore winds
for the interior starting early next week.

Aviation 20 1751z.

At 17z, the marine layer at klax was 1800 feet deep. The top of
the inversion was 3000 feet at 12 degrees celsius.

High confidence inVFR conditions everywhere through 01z with
seasonal onshore flow. 40% chance of ifr ceilings at ksmx 01-06z,
likely clearing by 08z. Ceiling possibilities after 06z... 80%
klgb klax ksmo... 50% koxr... 30% kcma ksba... 20% kbur kvny... 10%
ksbp kprb. Low confidence on ceiling heights, with anything
between 005-015 possible.

Klax... High confidence inVFR through 06z with seasonal onshore
flow. 80% chance of ceiling tonight with arrival window of 06-10z.

If ceilings form, 60% chance of low-MVFR, 30% chance of ifr, 10%
chance of lifr. SE winds will form again after 08z, likely under
08 kt.

Kbur... High confidence inVFR through 09z with seasonal southerly
winds. 20% chance of ifr conditions 10-16z.

Marine 20 908 am.

Low confidence on fog forecast, but dense fog is possible now
through the weekend. High confidence in widespread short period
seas into tonight, with decreasing heights.

High confidence in small craft advisory (sca) winds from the
central coast the san nicolas island through tonight, with weaker
and more borderline SCA over the weekend. Over the inner waters
from the santa barbara channel to the san pedro channel, SE winds
will form each morning through at least morning, up to 15 kt
through the passages and channels. Typical onshore winds expected
in the afternoon, with near SCA west winds on the far western
santa barbara channel.

Lox watches warnings advisories
Ca... None.

Pz... Small craft advisory in effect from 3 pm this afternoon to 3
am pdt Saturday for zone 645. (see laxmwwlox).

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

Small craft advisory in effect until 3 am pdt Saturday for
zone 676. (see laxmwwlox).

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

Public... Mw munroe
aviation... Kittell
marine... Kittell
synopsis... Stu
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ICAC1 - 9410840 - Santa Monica Pier 21 mi44 min W 12 G 15 57°F 59°F1019.4 hPa
PSXC1 34 mi44 min S 5.1 G 8.9
PXAC1 34 mi44 min S 7 G 9.9
BAXC1 34 mi44 min SSW 7 G 8.9
46221 - Santa Monica Bay, CA (028) 34 mi32 min 58°F3 ft
PFXC1 36 mi50 min SW 11 G 13 62°F
PFDC1 36 mi44 min S 7 G 8
PRJC1 37 mi50 min WSW 11 G 12
OHBC1 - 9410660 - Los Angeles, CA 37 mi44 min 58°F1019 hPa
AGXC1 38 mi44 min SSW 8 G 8.9 57°F 1019.2 hPa
46256 39 mi32 min 56°F3 ft
46222 - San Pedro, CA (092) 44 mi32 min 56°F4 ft
46253 48 mi32 min 58°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 mi39 minN 010.00 miFair73°F44°F35%1016.7 hPa
Los Angeles, Whiteman Airport, CA7 mi37 minSW 710.00 miFair72°F41°F33%1019 hPa
Van Nuys, Van Nuys Airport, CA12 mi41 minWNW 610.00 miFair74°F41°F31%1017 hPa
Los Angeles / USC Campus Downtown, CA17 mi45 minN 010.00 miFair73°F46°F38%1017.7 hPa
El Monte, CA18 mi47 minVar 610.00 miFair68°F44°F43%1019 hPa
Santa Monica, Santa Monica Municipal Airport, CA18 mi41 minWSW 1010.00 miFair65°F48°F56%1018.8 hPa
Los Angeles, Los Angeles International Airport, CA23 mi39 minWSW 1110.00 miFair70°F48°F47%1018.6 hPa
Hawthorne, Hawthorne Municipal Airport, CA23 mi39 minSW 710.00 miFair71°F46°F42%1018.3 hPa

Wind History from BUR (wind in knots)
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Last 24hr3SW7S12S8S8S7S5SE6E6E4E4E6E4E6E6SE7SE64SE5S6E6W4NW7Calm
1 day agoSE12S8S9S11S10S8SE7SE8SE8
G18
SE9SE8SE7SE9SE7SE9SE3S5CalmE65SE8S54SW7
2 days agoS96S4S7S11S7W6W6NW3NW4N3E3N4CalmN3NW3CalmCalmW3SE4CalmS11
G14
S12S11

Tide / Current Tables for Santa Monica, Municipal Pier, California
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Santa Monica
Click for Map
Fri -- 12:18 AM PDT     5.47 feet High Tide
Fri -- 06:16 AM PDT     Sunrise
Fri -- 07:43 AM PDT     -0.34 feet Low Tide
Fri -- 10:09 AM PDT     Moonrise
Fri -- 02:31 PM PDT     3.24 feet High Tide
Fri -- 06:50 PM PDT     2.31 feet Low Tide
Fri -- 07:29 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.45.34.83.82.51.30.4-0.2-0.300.71.52.32.93.23.232.72.42.32.533.64.3

Tide / Current Tables for Santa Monica, California
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Santa Monica
Click for Map
Fri -- 12:18 AM PDT     5.50 feet High Tide
Fri -- 06:16 AM PDT     Sunrise
Fri -- 07:43 AM PDT     -0.30 feet Low Tide
Fri -- 10:09 AM PDT     Moonrise
Fri -- 02:31 PM PDT     3.27 feet High Tide
Fri -- 06:50 PM PDT     2.35 feet Low Tide
Fri -- 07:29 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.55.44.83.82.61.40.4-0.2-0.30.10.71.52.32.93.23.232.72.42.42.533.64.3

Weather Map and Satellite Images
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wmap_P
GOES 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.