Sunday, May28, 2017 L-36.com


Marine Weather and Tides
Channel Islands Beach, CA

Version 3.4
What's New / NOTES
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 5:45AMSunset 8:03PM Sunday May 28, 2017 1:39 AM PDT (08:39 UTC) Moonrise 8:53AMMoonset 11:12PM Illumination 8% Phase: Waxing Crescent; Moon at 3 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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PZZ650 East Santa Barbara Channel From Pt. Conception To Pt. Mugu Ca Including Santa Cruz Island- 838 Pm Pdt Sat May 27 2017
Tonight..W winds 10 to 20 kt...becoming nw 5 to 10 kt after midnight. Wind waves 2 to 3 ft late in the evening...becoming 2 ft or less. W swell 1 to 2 ft at 7 seconds.
Sun..Winds variable 10 kt or less...becoming W 10 to 20 kt in the afternoon. Wind waves 2 ft or less. W swell 1 to 2 ft at 7 seconds.
Sun night..W winds 10 to 20 kt...becoming 5 to 10 kt after midnight. Wind waves 2 ft or less. W swell 2 to 3 ft at 6 seconds.
Mon..SE winds 5 to 10 kt...becoming sw 10 to 20 kt in the afternoon. Wind waves 1to 3 ft. W swell 2 to 3 ft at 6 seconds.
Mon night..W winds 15 to 20 kt with gusts to 25 kt...becoming 5 to 10 kt after midnight. Wind waves 2 to 3 ft. W swell 3 to 4 ft at 7 seconds.
Tue..Winds variable 10 kt or less...becoming W 10 to 20 kt with gusts to 25 kt in the afternoon. Wind waves 1 to 3 ft. W swell 3 to 4 ft at 8 seconds.
Tue night..Western portion...nw winds 15 to 20 kt. Eastern portion...sw winds 10 to 15 kt becoming variable 10 kt or less after midnight. Wind waves 2 to 4 ft. W swell 3 to 4 ft at 8 seconds.
Wed..W winds 15 to 20 kt with gusts to 25 kt. Combined seas 2 to 4 ft.
Thu..W winds 15 to 20 kt with gusts to 25 kt. Combined seas 2 to 4 ft.
PZZ600 838 Pm Pdt Sat May 27 2017
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 03z...or 8 pm pdt...a 1023 mb high was located 500 nm west of point conception while a 1008 mb thermal low was just south of las vegas.

7 Day Forecast for Marine Location Near Channel Islands Beach CDP, CA
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location: 34.15, -119.26     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 280629
afdlox
area forecast discussion
national weather service los angeles oxnard ca
1129 pm pdt Sat may 27 2017

Aviation discussion updated...

Synopsis
An upper level ridge of high pressure and a lowering marine layer
will support a warming trend through early next week. The high will
be replaced by a weak upper level trough of low pressure by the
middle of next week providing a cooling trend with more widespread
night and morning low clouds for the coast and valleys.

Short term (sat-tue)
latest satellite imagery was indicating mostly clear skies across
the forecast area, with the exception of some stratus pushing
along the santa barbara central coast. Some higher level clouds
were sweeping across the sba south coast into ventura county. High
clouds should only last for a few hours this evening. Latest
acars sounding near lax was showing the marine layer depth around
1500-1700 ft early this evening. Onshore gradients were around 2mb
weaker compared to yesterday at this time. With a weak eddy
expected to develop late this evening, low clouds should be slow
to develop across la county coastal areas, while the central coast
should see widespread low clouds after midnight. Would like to
see better organized stratus across the coastal waters, but with
somewhat of an eddy, low clouds should affect la coastal areas and
possibly into ventura coastal areas before dawn Sunday morning.

As for today, high temperatures were able to rebound nicely due to
weak offshore flow across interior areas and with high pressure
building aloft. Portions of the antelope valley warmed nearly 20
degrees today as well as a few lower mountain locations. Highs
reached the upper 80s to around 90 across the antelope valley,
which is a few degrees warmer than normal for this time of year.

La to sba county valleys ranged 3-9 degrees warmer compared to
yesterday, with san luis obispo interior valleys warming up over
10 degrees. Paso robles was 14 degrees warmer at 83 degrees.

Coastal areas near the beach were about the same as yesterday, or
a degree cooler today. The only changes made to the forecast this
evening was taking out low clouds for the san fernando valley as
newest high res models keep low clouds limited to coastal areas as
well as the san gabriel valley. Otherwise, no other changes were
made to the forecast this evening. Confidence is not terribly high
that this will happen as the marine layer should end up around
1000- 1400 ft deep. There could be some low clouds filtering in
the SE portion of the sfv, but should not be widespread if it
does.

***from previous discussion***
the marine layer is expected to shrink to around 1500 feet later
tonight into Sunday, as a weak offshore flow component develops
over the interior sections of the forecast area. This will result
in a further reduction of low cloud coverage for Sunday morning,
and lead to additional warming across the region. In fact, valley
areas are expected to climb well into the 80s on Sunday while the
antelope valley soars into the lower to mid 90s. Similar warm
temperatures expected on Monday. A weak upper level trough will
move into the area on Tuesday bringing an influx of higher level
clouds and a few degrees of cooling.

Long term (wed-sat)
the GFS and ECMWF models in fairly good agreement on deepening
upper level trough for Wednesday across forecast area. This system
will likely bring a deepening of the marine layer while model
cross sections showing increased mid and high level clouds. Have
introduced a slight chance of showers for Wednesday afternoon
across north facing slopes and antelope valley. All portions of
the forecast area should see noticeable cooling on Wednesday. Weak
upper level ridge of high pressure will bring a slow warming
trend Thursday into Friday with little change into Saturday.

Aviation 28 06z.

At 03z at klax... The inversion was based near 1850 feet. The top
of the inversion was near 4950 feet with a temperature of about
17 degrees celsius.

Overall... Moderate to high confidence in the current tafs.

Lifr ifr conditions will develop at most coastal locations by 10z
then will clear by 18z. There is a forty percent chance of
lifr ifr conditions at kbur and kvny in the 12z-17z period and a
thirty percent chance at kprb and ksba in the 10z-17z period.

Lifr ifr conditions will likely develop at coastal and adjacent
valley locations after 29 03z. Otherwise and elsewhereVFR
conditions will prevail.

Klax... Moderate confidence in the current taf. Lifr ifr
conditions will develop around 08z and clear around 17z... Then
return again around 29 03z. OtherwiseVFR conditions will prevail.

No east winds above 7 knots are expected.

Kbur... Moderate confidence the current taf. There is a forty
percent chance of lifr ifr conditions in the 12z-17z period then
the conditions will likely develop after 29 03z. OtherwiseVFR
conditions will prevail.

Marine 27 200 pm.

80 percent chance of low-end small craft advisory (sca)
conditions from the central coast to san nicolas island (outer
waters) late this afternoon... Becoming certain by Sunday... After
which SCA conditions should persist at least through Wednesday.

Some of the winds will spill into the western half of the santa
barbara channel each evening, but at this point does not look
expansive enough to warrant a SCA for the whole channel. These
winds will create a short period chop over all waters including
the santa barbara channel and santa monica basin (inner waters).

The winds peak Monday and Tuesday and there is a chance that gale
conditions form beyond 30 nm of the central coast.

Lox watches warnings advisories
Ca... None.

Pz... Small craft advisory in effect from 3 pm to 9 pm pdt Sunday
for zone 645. (see laxmwwlox).

Small craft advisory in effect until 6 am pdt Monday for
zones 670-673-676. (see laxmwwlox).

Hazard potential outlook (tue-sat)
no significant hazards expected.

Public... Kaplan gomberg
aviation... Kj
marine... Kittell
synopsis... Sirard
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46217 - Anacapa Passage, CA (111) 9 mi39 min 58°F3 ft
NTBC1 - Santa Barbara, CA - 9411340 29 mi63 min NE 5.1 G 6 57°F 1016.8 hPa
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 30 mi39 min NNW 3.9 G 5.8 60°F 61°F1016.4 hPa (-0.3)56°F
46251 31 mi48 min 59°F4 ft
46053 - E. SANTA BARBARA - 12NM Southwest of Santa Barbara, CA 32 mi39 min WNW 1.9 G 3.9 57°F 57°F1017.1 hPa (+0.0)56°F
46221 - Santa Monica Bay, CA (028) 39 mi39 min 62°F4 ft
ICAC1 - 9410840 - Santa Monica Pier 41 mi57 min NE 1.9 G 2.9 61°F 60°F1016.8 hPa

Wind History for Santa Barbara, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Oxnard, Oxnard Airport, CA5 mi48 minN 010.00 miFair56°F53°F90%1016.8 hPa
Point Mugu, Naval Air Warfare Center, CA8 mi43 minNE 310.00 miFair54°F52°F93%1017.3 hPa
Camarillo, Camarillo Airport, CA10 mi44 minN 010.00 miFair57°F52°F83%1017.7 hPa

Wind History from OXR (wind in knots)
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Last 24hrCalmCalmNE3NE3E3N6NE3CalmW6W9SW11W11W11
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1 day agoW4CalmCalmSE3E5E4NE6CalmCalmSW5S8W11
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2 days agoS3SW7W5W4W4CalmCalmCalmSW3SE3S7SW7SW8SW7S6S8SW8SW8SW7SW7SW5SW5W6W3

Tide / Current Tables for Port Hueneme, California
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Port Hueneme
Click for Map
Sun -- 05:47 AM PDT     Sunrise
Sun -- 06:32 AM PDT     -1.38 feet Low Tide
Sun -- 08:52 AM PDT     Moonrise
Sun -- 01:10 PM PDT     3.94 feet High Tide
Sun -- 06:00 PM PDT     2.10 feet Low Tide
Sun -- 08:01 PM PDT     Sunset
Sun -- 11:11 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
6.15.33.92.30.7-0.6-1.3-1.3-0.70.41.62.83.63.93.83.32.82.32.12.32.93.84.85.5

Tide / Current Tables for Ventura, California
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Ventura
Click for Map
Sun -- 05:47 AM PDT     Sunrise
Sun -- 06:35 AM PDT     -1.38 feet Low Tide
Sun -- 08:53 AM PDT     Moonrise
Sun -- 01:09 PM PDT     3.94 feet High Tide
Sun -- 06:03 PM PDT     2.10 feet Low Tide
Sun -- 08:01 PM PDT     Sunset
Sun -- 11:12 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
6.15.342.30.7-0.5-1.3-1.3-0.70.31.62.83.63.93.83.42.82.32.12.32.93.84.85.6

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 (4,6,7,8)
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Ground Weather Radar Station Los Angeles, 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.