Tuesday, March28, 2017 L-36.com


Marine Weather and Tides
La Crescenta-Montrose, CA

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:42AMSunset 7:12PM Tuesday March 28, 2017 8:13 PM PDT (03:13 UTC) Moonrise 7:21AMMoonset 8:07PM Illumination 3% Phase: Waxing Crescent; Moon at 2 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- 417 Pm Pdt Tue Mar 28 2017 Update
Tonight..From point mugu to santa Monica...nw winds 15 to 20 kt becoming ne 20 to 25 kt after midnight. Elsewhere...nw winds 15 to 20 kt becoming 5 to 10 kt after midnight. Wind waves 2 to 3 ft. W swell 4 to 6 ft at 17 seconds.
Wed..From point mugu to santa Monica...ne winds 20 to 25 kt becoming 10 to 15 kt in the afternoon. Elsewhere...ne winds 10 to 20 kt. Wind waves 2 to 4 ft. W swell 3 to 5 ft at 16 seconds.
Wed night..W winds 10 to 15 kt...becoming nw 5 to 10 kt after midnight. Wind waves 2 ft or less. W swell 3 to 4 ft at 15 seconds.
Thu..Winds variable 10 kt or less...becoming W 10 to 20 kt with local gusts to 25 kt in the afternoon. Wind waves 2 ft or less... Becoming 2 to 4 ft in the afternoon. W swell 3 to 4 ft at 14 seconds.
Thu night..Western portion...nw winds 30 to 35 kt becoming 15 to 20 kt after midnight. Elsewhere...nw winds 15 to 20 kt becoming N after midnight. Combined seas 6 to 8 ft dominant period 10 seconds.
Fri..From point mugu to santa Monica...ne winds 15 to 20 kt becoming nw 20 to 25 kt in the afternoon. Elsewhere...ne winds 5 to 10 kt becoming nw 15 to 20 kt in the afternoon. Wind waves 2 to 4 ft. W swell 4 to 6 ft at 11 seconds.
Fri night..NW winds 15 to 25 kt with gusts to 30 kt...becoming N 5 to 10 kt after midnight. Combined seas 6 to 8 ft dominant period 10 seconds...subsiding to 5 to 6 ft dominant period 10 seconds after midnight.
Sat..NW winds 10 to 20 kt. Wind waves 1 to 3 ft. W swell 3 to 5 ft.
Sun..W winds 5 to 10 kt. Wind waves 2 ft or less. W swell 3 to 5 ft.
PZZ600 417 Pm Pdt Tue Mar 28 2017
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 20z...or 1 pm pst...a 1030 mb high pressure center was located 550 nm northwest of point conception and a 1000 mb low pressure center was located over new mexico. Winds will be elevated during much of this coming week. Gales will possibly return again Thursday and Friday. Short period seas will dominate the waters due to persistent northwest winds.

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 290047
afdlox
area forecast discussion... Updated
national weather service los angeles/oxnard ca
547 pm pdt Tue mar 28 2017

Synopsis
Weakening offshore flow and ridging aloft will bring a warming
trend through Wednesday. A trough of low pressure will bring
cooler conditions by Friday with another round of gusty offshore
winds. Warmer conditions will likely return this weekend as weak
offshore flow lingers and a ridge aloft builds into the region.

Short term (tdy-fri)
north to northeast winds continue to weaken this afternoon and all
advisories will be allowed to expire. However, a new set of low
end wind advisories will be issued for southern santa barbara
county as models still show a decent gradient and winds below
850mb to justify it. Still some uncertainty on the strength of the
santa ana winds on Wednesday across la/ventura counties. The nam
was stronger today with the upper support than it was yesterday
but with the ridge building and the low and cold air air well to
the east this seems unlikely. MOS guidance is all pretty weak as
well. There may be a couple hours of near advisory level gusts in
the morning across the mtns mainly but will keep winds below
advisory levels for now. Gradients are stronger, which is not
uncommon for the second day of offshore events, and the air mass
is quite a bit warmer with the ridge aloft, so high temps should
jump several degrees from today. Low 90s expected for warmer
valleys, which would be close to record levels, and 70s and 80s
for coastal zones which probably won't be quite enough to reach
records.

On Thursday a trough will move into NRN california then move
southeast into southern nevada Thursday evening. This will result
in a rapid shift from offshore to onshore (an almost 7 mb 24 hour
trend from Wed from lax-dag), and several degrees of cooling,
especially for coast/valleys.

Another round of very gusty north winds expected behind the
trough Thu evening into Friday morning with speeds possibly
approaching the levels experienced last night.

Then gradients turn offshore again Friday, though air mass will be
quite a bit cooler so highs should be a few degrees cooler than
thu despite the offshore trends.

Long term (sat-tue)
a second day of offshore gradients Saturday will be accompanied
by a much warmer air mass as the upper low exits to the east and
the ridge builds. Highs not expected to be quite as warm Saturday
as tomorrow but still at least 10-15 degrees above normal. There
will be some northeast breezes but likely below advisory levels.

Gradients then shift to onshore Sunday that should lead to some
cooling but still at least a few degrees above normal in most
areas.

For Monday and Tuesday the GFS has shifted towards the much
weaker and progressive trough pattern that the ECMWF has been
advertising. It's been bouncing around quite a bit though so
confidence is pretty low for early next week, but if these trends
hold then it would certainly be a warmer and less windy forecast
than previously expected with no chance of rain. Bumped up highs
a few degrees but didn't want to adjust too much in case the
solutions reverts back to a cooler/windier one.

Aviation 29/0045z.

At 00z, there was no marine layer at klax.

High confidence in the current forecast.VFR conditions are
expected throughout the period, except for a chance of lifr
conditions at kprb between 13z and 17z. Periods of moderate low-
level wind shear and turbulence are possible through 16z.

Klax...VFR conditions are expected throughout the period. There is
a chance of northerly cross winds between 10 and 20 knots between
02z and 08z. Any east winds developing after 08z should remain
less than 7 knots.

Kbur...VFR conditions are expected throughout the period. Periods
of moderate low-level wind shear and turbulence are possible
between 07z and 11z.

Marine 28/200 pm.

Across the outer waters... Another gale warning continues as model
solutions project 45 kt gusts in the western sections late this
afternoon through much of tonight. It is a bit difficult to
monitor conditions in the coastal waters due to an outage of
observations. Small craft advisory winds will resume Wednesday
and continue into Wednesday night. By late Thursday, wind speeds
in the outer waters may again increase to gale warning criteria.

Across the inner waters... A SCA for hazardous seas is in effect
through this afternoon south of point conception due to steep and
choppy waves. Gale level winds may affect the inner waters on
Thursday and Friday.

Lox watches/warnings/advisories
Ca... High surf advisory in effect until 2 pm pdt Wednesday for
zones 34-35. (see laxcfwlox).

Wind advisory in effect until 3 am pdt Wednesday for zones
39-52. (see laxnpwlox).

Beach hazards statement in effect through Wednesday afternoon
for zones 40-41-87. (see laxcfwlox).

Pz... Small craft advisory in effect until 9 pm pdt this evening
for zone 645. (see laxmwwlox).

Gale warning in effect until 3 am pdt Wednesday for zones
670-673-676. (see laxmwwlox).

Hazard potential outlook (fri-tue)
another round of strong and gusty northerly winds are expected
Friday.

Public... Mw
aviation... Hall
marine... Sweet
synopsis... Munroe
weather.Gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ICAC1 - 9410840 - Santa Monica Pier 21 mi43 min NNE 4.1 G 5.1 66°F 58°F1014.2 hPa
PSXC1 34 mi43 min NW 4.1 G 6
PXAC1 34 mi43 min NW 4.1 G 4.1
BAXC1 34 mi43 min NW 6 G 7
46221 - Santa Monica Bay, CA (028) 34 mi43 min 59°F6 ft
PFXC1 36 mi43 min WSW 5.1 G 6 65°F 1013.4 hPa
PFDC1 36 mi43 min SW 7 G 8
PRJC1 37 mi43 min WSW 14 G 16
OHBC1 - 9410660 - Los Angeles, CA 37 mi43 min 59°F1014.2 hPa
AGXC1 38 mi43 min WSW 12 G 14 61°F 1014.4 hPa
46256 39 mi51 min 58°F3 ft
46222 - San Pedro, CA (092) 44 mi54 min 60°F5 ft
46253 47 mi43 min 60°F4 ft

Wind History for Santa Monica, CA
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NE6
G9
N11
G15
N11
G22
N27
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G39
N25
G36
N20
G30
N12
G26
N28
G41
N35
G44
N18
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N23
G32
N16
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N7
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SE12
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G14
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W8
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N10
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W11
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G14
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Burbank - Bob Hope Airport, CA6 mi20 minSSW 410.00 miFair70°F36°F29%1013.5 hPa
Los Angeles, Whiteman Airport, CA7 mi20 minNW 15 G 2010.00 miClear77°F17°F11%1015.6 hPa
Van Nuys, Van Nuys Airport, CA12 mi22 minN 13 G 1910.00 miFair68°F37°F32%1013.9 hPa
Los Angeles / USC Campus Downtown, CA17 mi26 minN 010.00 miFair69°F50°F51%1014 hPa
El Monte, CA18 mi22 minSSW 510.00 miFair68°F37°F33%1014.9 hPa
Santa Monica, Santa Monica Municipal Airport, CA18 mi22 minW 310.00 miFair65°F51°F61%1014.4 hPa
Los Angeles, Los Angeles International Airport, CA23 mi20 minN 010.00 miA Few Clouds63°F53°F70%1014.3 hPa
Hawthorne, Hawthorne Municipal Airport, CA23 mi20 minSW 310.00 miFair64°F52°F65%1014.5 hPa

Wind History from BUR (wind in knots)
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Last 24hrNW14
G22
NW9W10W7W11W11W10NW9NW9NW9NW9N11N145SE9SE6CalmSE13S7S9S8SE6SE7S4
1 day agoS3CalmCalmE3E4E3CalmCalmSE3CalmCalmCalmCalmSW6N16
G24
N12
G22
NW15
G23
N11
G19
NW20
G28
NW15
G24
NW20
G27
NW22
G29
NW17
G29
NW16
G30
2 days agoS3CalmSE5E3CalmCalmCalmCalmE3NE4CalmN4N4Calm3SW53SW7S10S10S6S9S8S4

Tide / Current Tables for Santa Monica, Municipal Pier, California
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Santa Monica
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Tue -- 04:08 AM PDT     -0.07 feet Low Tide
Tue -- 06:46 AM PDT     Sunrise
Tue -- 07:21 AM PDT     Moonrise
Tue -- 10:16 AM PDT     5.22 feet High Tide
Tue -- 04:23 PM PDT     -0.10 feet Low Tide
Tue -- 07:12 PM PDT     Sunset
Tue -- 08:08 PM PDT     Moonset
Tue -- 10:34 PM PDT     5.50 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
42.71.40.4-0.10.212.33.64.75.254.331.70.6-000.823.44.65.45.4

Tide / Current Tables for Santa Monica, California
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Santa Monica
Click for Map
Tue -- 04:08 AM PDT     -0.04 feet Low Tide
Tue -- 06:46 AM PDT     Sunrise
Tue -- 07:21 AM PDT     Moonrise
Tue -- 10:16 AM PDT     5.26 feet High Tide
Tue -- 04:23 PM PDT     -0.07 feet Low Tide
Tue -- 07:12 PM PDT     Sunset
Tue -- 08:08 PM PDT     Moonset
Tue -- 10:34 PM PDT     5.54 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
42.71.40.4-00.21.12.33.74.75.25.14.33.11.70.6-00.10.823.54.75.45.5

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 (23,6,7,8)
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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.