Monday, September24, 2018 L-36.com


Marine Weather and Tides
Channel Islands Beach, CA

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What's New / NOTES
9/17/2018 XTide broke when 1and1 "upgraded" my server. It has been esculated. I am sorry for the problem.

Sunrise 6:45AMSunset 6:51PM Monday September 24, 2018 10:02 AM PDT (17:02 UTC) Moonrise 7:04PMMoonset 6:15AM Illumination 100% Phase: Full Moon; Moon at 15 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- 906 Am Pdt Mon Sep 24 2018
Today..Winds variable 10 kt or less, becoming sw 10 kt in the afternoon. Wind waves 2 ft or less. W swell 2 to 3 ft at 8 seconds. Patchy fog.
Tonight..SW winds 10 to 15 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. W swell 2 ft at 8 seconds.
Tue..Winds variable 10 kt or less, becoming sw 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 2 ft at 8 seconds.
Tue night..SW winds 10 to 15 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. W swell 2 ft at 8 seconds.
Wed..Winds variable 10 kt or less, becoming sw 10 kt in the afternoon. Wind waves 2 ft or less. W swell 2 ft at 7 seconds.
Wed 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 3 ft at 6 seconds.
Thu..W winds 10 to 15 kt. Wind waves 2 ft or less. W swell 2 to 3 ft.
Fri..W winds 10 to 15 kt. Wind waves 2 ft or less. W swell 2 ft. Patchy fog.
PZZ600 906 Am Pdt Mon Sep 24 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 1033 mb surface high pressure system was centered about 700 nm west of seattle, and a 1005 mb thermal low was located near las vegas. Areas of dense fog will affect portions of the coastal waters overnight and into Monday morning.


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 241108
afdlox
area forecast discussion
national weather service los angeles oxnard ca
408 am pdt Mon sep 24 2018

Synopsis 24 331 am.

Afternoon temperatures will lower a bit more today, rise Tuesday
through Thursday, then lower again Friday through the weekend.

Night through and morning low clouds and fog will affect coastal
areas through the weekend, and the valleys through Tuesday and
again over the weekend.

Short term (tdy-wed) 24 353 am.

Low clouds were widespread in all coastal and valley areas this
morning with the exception of the santa clarita valley and the
interior valleys of slo and sba counties. The marine layer has
deepened to about 1800 feet early this morning, and if it deepens
a bit more, clouds could push into the santa clarita valley.

Profiler data near klax showed another 2-4 degrees celsius of
cooling from the surface through 1500 feet during the past 24
hours, and 4-7 degrees celsius of cooling between 1500 and 2200
feet, with less cooling above that.Onshore gradients have also
increased. With a deeper marine layer and increasing onshore flow,
expect somewhat slower clearing today. Skies should clear by mid
to late morning in the valleys, and by noon across the coastal
plain, but could linger into the afternoon near the beaches.

Expect several degrees of cooling across the entire forecast area
today, with MAX temps generally below normal in most areas.

An upper trough dropping into the great basin will move eastward
into the northern rockies and great plains tonight and tue, but
models continue to show a weak baggy trough hanging back across
the region through Tuesday morning. Heights will begin to rise
Tuesday afternoon, especially across slo and sba counties as a
strong upper high well off the pac NW begins to build southeastward
toward the region. Do not expect much change in the marine layer
depth or the coverage of night thru morning low cloud pattern
tonight Tue morning, although there may be less inland penetration
of the low clouds in the valleys as onshore flow begins to weaken.

Height rises should lead to some warming on tue, with the best
warming in the mtns and deserts, and across slo and northern sba
counties where height rises will be greatest. Clouds should clear
a bit faster on tue, which may also allow for slight warming in
valley and possibly coastal areas.

The upper high well off the pac NW coast Tue night and Wed will
continue to build into the west coast to the north of the region.

Another ridge will pop across and just west of the forecast area
on the eastern edge of a large upper low in the eastern pacific,
many hundreds of miles to the west. Expect heights and
thicknesses to rise across the region, so the marine layer should
become more shallow, with night through morning low clouds likely
confined mostly to the coastal plain. Onshore gradients will
decrease a bit more, and make flip very weakly offshore wed
morning. Temps at 850 and 950 mb will also rise. This should all
result in several degrees of warming in most areas on wed, with
temps rising to above normal levels.

Long term (thu-sun) 24 406 am.

The upper low will continue to move slowly toward ca on thu, but
fairly strong ridging should hold, and heights and thicknesses
will remain quite high. Onshore gradients will remain quite weak.

Expect little change in MAX temps across the region on thu, and
there could even be a bit more warming especially across l.A. And
vtu counties as 950 mb temps cont to edge upward.

The ec and the GFS continue to be in rather good agreement are
now in very good agreement in showing the upper low tracking
toward the coast Thu night and fri, to a position about 250-300 nm
west of san francisco Fri afternoon. Across the region, lowering
heights and thicknesses should lead to some deepening of the
marine layer, with night thru morning low clouds probably pushing
into the lower valleys Thu night Fri morning. Expect a few to
several degrees of cooling in most areas on fri.

The upper low will track into northern ca Fri night and sat.

The GFS is slightly faster and farther south with its track, just
north of san francisco late Sat morning, while the ec takes it to
near eureka by Sat evening. A trough will extend southward into
the forecast areas, causing heights and thicknesses to continue
to lower. Onshore flow will also increase. Expect the marine layer
to deepen, with widespread night through morning low clouds and
fog in coastal and valley areas. Expect considerable cooling
across the entire region on sat, with temps down to below normal
levels. The upper low will open up a weaken Sat night and sun, but
a broad trough will linger over the region. This should maintain
a deep marine layer with plenty of night through morning low
clouds in coastal and valley areas. MAX temps should not change
too much on sun, generally remaining below normal.

Aviation 24 1034z.

At 1030z, the marine inversion at klax was based at 1600 feet.

The top of the inversion was 3100 feet with a temperature
of 22 degrees celsius.

Overall, moderate to high confidence in current forecast.

Currently, ifr lifr conditions are impacting all coastal and
coastal valley sites. Expect these flight restrictions by late
this morning. For tonight, expect a bit shallower marine inversion
with stratus fog likely confined to the coastal plain with
ifr lifr conditions.

Klax... Moderate confidence in 12z taf. Dissipation of ifr
conditions this morning could be + - 2 hours of current 18z
forecast. For tonight, high confidence in return of ifr
conditions, but low confidence in timing (could be + - 3 hours of
current 04z forecast).

Kbur... Moderate confidence in 12z taf. There is a 40% chance that
ifr conditions could linger until 18z this morning. For tonight,
there is a 30% chance that ifr lifr conditions could develop.

Marine 24 334 am.

For the outer waters, high confidence in current forecast. Winds
and seas are expected to remain below small craft advisory (sca)
levels through Friday.

For the inner waters, high confidence in current forecast. Winds
and seas are expected to remain below SCA levels through Friday.

Dense fog with visibility one nautical mile or less will affect
portions of the coastal waters through this morning. Highest
confidence for dense fog exists for the coastal waters north of
point conception, but the santa barbara channel may also be
affected this morning.

Lox watches warnings advisories
Ca... None.

Pz... None.

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

Public... Db
aviation... Rat
marine... Rat
synopsis... Kj db
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46217 - Anacapa Passage, CA (111) 9 mi42 min 65°F2 ft
NTBC1 - Santa Barbara, CA - 9411340 29 mi87 min 63°F 1012.7 hPa
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 30 mi33 min SE 7.8 G 12 63°F 69°F1012.4 hPa60°F
46251 31 mi33 min 69°F3 ft
46053 - E. SANTA BARBARA - 12NM Southwest of Santa Barbara, CA 32 mi33 min E 5.8 G 7.8 65°F 68°F1012.8 hPa62°F
46262 34 mi33 min 69°F3 ft
46221 - Santa Monica Bay, CA (028) 39 mi33 min 66°F2 ft
ICAC1 - 9410840 - Santa Monica Pier 41 mi33 min W 1 G 4.1 65°F 70°F1013.1 hPa

Wind History for Santa Barbara, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Oxnard, Oxnard Airport, CA5 mi72 minS 410.00 miOvercast65°F57°F78%1012.3 hPa
Point Mugu, Naval Air Warfare Center, CA8 mi66 minSSE 710.00 miOvercast65°F55°F73%1012.7 hPa
Camarillo, Camarillo Airport, CA10 mi68 minSSE 49.00 miOvercast66°F55°F70%1013.3 hPa

Wind History from OXR (wind in knots)
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Last 24hrSW4SW45W7W8W8W9W9W7W8NW5W3CalmSE3SE4E3S3S4--E4CalmCalmS4SE6
1 day agoW10W11W12W11W15W14W17W15W12W11W7W7NW4W3CalmCalmCalmE3CalmNE4CalmCalmCalm3
2 days agoSW8SW6SW6W7SW6SW4SW4W63W4W7W6--W6W7NW4NW4Calm--W5NW5--NW3W8

Tide / Current Tables for Port Hueneme, California
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Tide / Current data from XTide NOT FOR NAVIGATION
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Tide / Current Tables for Ventura, California
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Tide / Current data from XTide NOT FOR NAVIGATION
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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 (13,3,4,5)
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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.