Saturday, April20, 2019 L-36.com


Marine Weather and Tides
La Crescenta-Montrose, CA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:14AMSunset 7:29PM Saturday April 20, 2019 9:54 AM PDT (16:54 UTC) Moonrise 9:06PMMoonset 7:22AM Illumination 99% Phase: Waning Gibbous; Moon at 16 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- 902 Am Pdt Sat Apr 20 2019
Today..Winds variable 10 kt or less, becoming sw 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 2 to 3 ft at 13 seconds, building to 3 to 5 ft at 12 seconds in the afternoon. S swell 2 ft. Patchy drizzle in the morning.
Tonight..W winds 10 to 15 kt. Wind waves 2 ft or less. W swell 4 to 6 ft at 10 seconds.
Sun..W winds 10 to 15 kt. Wind waves 2 ft or less. W swell 4 to 6 ft at 8 seconds.
Sun night..W winds 10 to 15 kt. Wind waves 2 ft or less. W swell 4 to 6 ft at 9 seconds.
Mon..NE winds 5 to 10 kt, becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 3 to 5 ft at 9 seconds.
Mon night..W winds 10 to 15 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. W swell 2 to 4 ft at 9 seconds.
Tue..SW winds 10 to 15 kt. Wind waves 2 ft or less. W swell 2 to 3 ft.
Wed..SW winds 10 to 15 kt. Wind waves 2 ft or less. W swell 2 ft.
PZZ600 902 Am Pdt Sat Apr 20 2019
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 1029 mb surface high was centered 700 nm W of san francisco, while a 1004 mb thermal low was centered around las vegas. High pressure will push closer to the coast and strengthen over the weekend, resulting in widespread 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 201640
afdlox
area forecast discussion
national weather service los angeles oxnard ca
940 am pdt Sat apr 20 2019

Synopsis 20 806 am.

The marine layer will persist through much of the area today, keeping
temperatures below normal. Strong, west winds are expected in the
desert. Tomorrow will be sunnier as the marine layer retreats.

Next week will be warmer with clear skies.

Short term (tdy-mon) 20 938 am.

The marine inversion deepened to near 2400 ft at vbg at 12z, while
at lax the marine inversion was around 2600 ft at 15z. The deepening
marine layer helped to squeeze out some moisture this morning, with
a few hundredths of an inch of rain noted in spots along the central
coast, sba county S coast and santa ynez mtns, and the vlys from the
coast to foothills of vtu county. Patchy drizzle or very light rain
will persist this morning for many of these areas as well as into
l.A. County especially into the S facing slopes. The low clouds did
cover much of the coast, vlys and coastal slopes this morning, which
should persist for a while today with some afternoon clearing
possible in the vlys. Many coastal and even some vlys may have low
clouds thru the afternoon. Otherwise, some mid and hi level clouds
will move thru the area today for partly cloudy skies at times.

Strong onshore gradients today (nam fcst +8.2 mb lax-dag at 00z)
will result in gusty NW winds along the central coast, and gusty s
to W winds for the foothills, mtns and antelope vly. Winds will be
strong enough this afternoon into tonight across the antelope vly
that a wind advisory is in effect for this area.

Needless to say, with the deep marine layer and good onshore flow,
temps today will be as much as 6 to 12 deg below normal. Highs in
the warmest coast and vlys should reach only into the 60s to around
70.

A fast-moving upper level trof just off the ca coast this morning
will sweep through the area this afternoon and evening. Another
upper level trof will move out of the eastern pac late tonight then
move thru SRN ca on sun. An upper level low over nv on Sun is
forecast to move S to the nv az border into early Mon which should
enhance upper level troffiness over SRN ca. An upper level ridge is
expected to develop off the ca coast Sun night and Mon as well. This
will bring a strong northerly flow aloft to SRN ca on mon.

The marine layer will remain rather deep tonight with low clouds
expected for many of the coast and vlys tonight into Sun morning,
altho with some northerly flow expected over sba county, the low
clouds should clear from the sba county S coast during the period.

Some clouds should also be banked up on the N mtn slopes. The low
clouds should clear to or off the coast by Sun afternoon, with
mostly sunny skies expected most areas. An eddy should keep some low
clouds along the vtu l.A. County coast into some vlys Sun night into
mon morning. Clouds are also expected on the N mtn slopes at that
time thanks to upslope flow. Otherwise, mostly clear skies will
prevail across the forecast area Sun night and mon.

Some gusty N winds should affect the sba county mtns and S coast
tonight but should remain below advisory levels for the most part,
except locally reach advisory levels at times W of goleta. Gusty sub-
advisory level NW winds will likely affect the l.A. Vtu county mtns
tonight especially along the i-5 corridor, with advisory level winds
expected in the antelope vly.

A round of gusty NW to N winds will affect the area Sun night into
mon morning as well, with the strongest winds expected in the mtns
and antelope vly, as well as the sba county S coast. Wind advisories
will likely be needed for for many of these areas as we draw closer
to the event.

Temps should turn a few degrees warmer on Sun but remain a few
degrees below normal, then warm to a few degrees above normal for
many areas on mon. Highs in the warmest vlys and inland coastal
areas should be in the mid 60s to lower 70s on sun, and mid 70s to
low 80s on mon.

Long term (tue-fri) 20 321 am.

Synoptically a ridge will sit over the area Tuesday through
Thursday. The GFS and ec disagree on the Friday forecast with the
ec advertising weak cyclonic flow and the GFS with weak anti
cyclonic flow.

The best offshore flow will be Tuesday and there may be a need for
a few low end advisories. The offshore flow will eliminate the
stratus. The increased hgts and offshore flow will bring another 5
to 10 degrees of warming and MAX temps will be 4 to 8 degrees
above normal with plenty of readings in the mid and upper 80s.

Not too much change to the forecast for Wednesday. The offshore
flow will be weaker from the north and there will be onshore flow
to the east. The beaches will likely cool some but the rest of the
area will see similar temps or even a degree warmer.

Look for some cooling each day Thu and Fri as the ridge weakens.

The onshore flow increases enough to bring night through morning
stratus back to the immediate coasts. MAX temps will still remain
above normal.

Aviation 20 1016z.

At 0928z, the marine layer was around 1900 feet deep. The top of
the inversion was 4100 feet with a temperature of 14 degrees
celsius.

Moderate confidence in 12z tafs. Good confidence that CIGS will
continue to rise from ifr to MVFR by mid morning. Timing could be
off by an hour or two. There will be patchy drizzle across the
coasts and valleys through 18z. There is a 30 percent chc of sct
conds at any terminal from 20z- 02z
later this afternoon there will be strong southwesterly winds
across the deserts with a 20-30% chance of MVFR vsbys in blowing
dust and sand.

Klax... Overall, moderate confidence in 12z taf. Timing of flight
cat changes could be off by + - 2 hours. There is a 30% chance
that MVFR CIGS will dissipate after 20z.

Kbur... Overall, moderate confidence in 12z taf. Timing of flight
cat changes could be off by + - 2 hours. There is a 30% chance
that MVFR CIGS will dissipate after 20z.

Marine 20 844 am.

For the outer waters, moderate confidence in the current
forecast. Winds and seas will rise to small craft advisory for
gusty NW winds and choppy seas this afternoon. The southern zone
(pzz676) will be (sca) this afternoon through early this evening.

This evening, there is a 70% chance for gale force winds to
develop through late tonight or pre-dawn hours Sunday. Gale
warnings remain in place. There is a 50% chance for more gale
force winds for the outer waters Sunday afternoon and evening
hours.

For the inner waters north of point sal, moderate confidence in
current forecast. Winds and seas will rise to (sca) levels this
afternoon through early this evening. Then a gale warning remains
through late tonight or pre-dawn Sunday morning. There is a good
chance that a (sca) will be needed for Sunday afternoon into the
overnight hours.

For the inner waters south of point conception, moderate
confidence in current forecast. Winds and seas will rise to
(sca) for the western portion of the inner santa barbara channel
this afternoon and continue into Sunday morning. Elsewhere, there
will be some local NW winds to 20 kt around the NW portion of
(pzz655) or around anacapa island this afternoon and evening
hours. From Sunday afternoon through Wednesday, winds and seas are
expected to remain below SCA levels.

Lox watches warnings advisories
Ca... Wind advisory in effect from 2 pm this afternoon to 6 am pdt
Sunday for zone 59. (see laxnpwlox).

Pz... Small craft advisory in effect until 6 pm pdt this evening
for zone 645. (see laxmwwlox).

Gale warning in effect from 6 pm this evening to 3 am pdt
Sunday for zones 645-676. (see laxmwwlox).

Small craft advisory in effect from 3 pm this afternoon to 9
am pdt Sunday for zone 650. (see laxmwwlox).

Small craft advisory in effect until 3 pm pdt this afternoon
for zones 670-673. (see laxmwwlox).

Gale warning in effect from 3 pm this afternoon to 3 am pdt
Sunday for zones 670-673. (see laxmwwlox).

Small craft advisory in effect from 3 pm this afternoon to 6
pm pdt this evening for zone 676. (see laxmwwlox).

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

Public... Sirard rorke
aviation... Kaplan
marine... Sweet kaplan
synopsis... Phillips
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ICAC1 - 9410840 - Santa Monica Pier 21 mi55 min 60°F1015.3 hPa (+1.3)
46221 - Santa Monica Bay, CA (028) 34 mi55 min 59°F3 ft
BAXC1 34 mi55 min ESE 8 G 8.9
PSXC1 34 mi55 min S 5.1 G 8.9
PXAC1 34 mi55 min S 5.1 G 8
PFDC1 36 mi55 min SSE 5.1 G 8
PFXC1 36 mi55 min SSW 8.9 G 9.9 58°F
OHBC1 - 9410660 - Los Angeles, CA 37 mi55 min 60°F1015.6 hPa (+1.6)
PRJC1 37 mi55 min SSW 8 G 8.9
AGXC1 38 mi55 min S 8.9 G 9.9 56°F 1015.3 hPa (+1.5)
46256 39 mi55 min 56°F3 ft
46222 - San Pedro, CA (092) 44 mi55 min 59°F3 ft
46253 48 mi55 min 59°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 mi62 minS 710.00 miOvercast57°F48°F74%1013.8 hPa
Los Angeles, Whiteman Airport, CA7 mi65 minESE 55.00 miOvercast55°F48°F77%1015.9 hPa
Van Nuys, Van Nuys Airport, CA12 mi64 minSSE 67.00 miOvercast57°F48°F72%1014.2 hPa
Los Angeles / USC Campus Downtown, CA17 mi68 minN 010.00 miOvercast60°F48°F65%1014.6 hPa
El Monte, CA18 mi70 minVar 410.00 miOvercast59°F48°F68%1015.6 hPa
Santa Monica, Santa Monica Municipal Airport, CA18 mi64 minS 410.00 miOvercast59°F50°F72%1015 hPa
Hawthorne, Hawthorne Municipal Airport, CA23 mi62 minN 010.00 miOvercast60°F48°F65%1015.1 hPa
Los Angeles, Los Angeles International Airport, CA23 mi62 minESE 510.00 miOvercast60°F48°F67%1014.9 hPa

Wind History from BUR (wind in knots)
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Last 24hrSE5S6S53S10S9S10S10SE7SE8SE8SE10S3S5S6S3SW4S4SE3SE6S5S5S7S7
1 day agoCalmCalm4S7S9S9S7S9E6SE6SE3CalmW3W5SE8SE7SE3CalmS4W3CalmCalmCalmCalm
2 days agoSE5SE7E5E8S11S10SW10S8S6SE6S543E4SE3N3W3SW3NW3E3W3CalmCalmCalm

Tide / Current Tables for Santa Monica, California
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Santa Monica
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Sat -- 04:47 AM PDT     -0.75 feet Low Tide
Sat -- 06:17 AM PDT     Sunrise
Sat -- 07:23 AM PDT     Moonset
Sat -- 10:58 AM PDT     4.53 feet High Tide
Sat -- 04:30 PM PDT     0.86 feet Low Tide
Sat -- 07:29 PM PDT     Sunset
Sat -- 09:06 PM PDT     Moonrise
Sat -- 10:44 PM PDT     5.95 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.83.41.80.4-0.5-0.7-0.20.82.13.44.24.54.23.42.41.50.90.91.52.63.855.85.9

Tide / Current Tables for Santa Monica, Municipal Pier, California
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Santa Monica
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Sat -- 04:49 AM PDT     -0.81 feet Low Tide
Sat -- 06:17 AM PDT     Sunrise
Sat -- 07:23 AM PDT     Moonset
Sat -- 11:00 AM PDT     4.45 feet High Tide
Sat -- 04:34 PM PDT     0.83 feet Low Tide
Sat -- 07:29 PM PDT     Sunset
Sat -- 09:06 PM PDT     Moonrise
Sat -- 10:44 PM PDT     5.83 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.73.31.70.3-0.6-0.8-0.30.723.34.14.54.23.42.41.50.90.91.42.53.74.95.65.8

Weather Map and Satellite Images
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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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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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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.