Saturday, April4, 2020
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Marine Weather and Tides
Channel Islands Beach, CA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:37AMSunset 7:21PM Saturday April 4, 2020 4:30 PM PDT (23:30 UTC) Moonrise 3:39PMMoonset 4:43AM Illumination 90% Phase: Waxing Gibbous; Moon at 12 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- 242 Pm Pdt Sat Apr 4 2020
Tonight..W winds 15 to 20 kt. Combined seas 3 to 5 ft dominant period 7 seconds.
Sun..SW winds 10 to 15 kt, becoming S 10 to 20 kt with local gusts to 25 kt in the afternoon. Wind waves 1 to 3 ft. W swell 2 ft at 6 seconds. Chance of rain in the morning, then rain likely.
Sun night..S winds 10 to 20 kt with local gusts to 25 kt. Wind waves 2 to 4 ft. W swell 2 to 4 ft at 7 seconds. S swell 2 ft. Rain and slight chance of tstms.
Mon..W winds 10 to 15 kt, becoming sw 10 kt in the afternoon. Wind waves 2 ft or less. W swell 3 to 4 ft at 9 seconds. Chance of rain in the morning, then chance of showers and slight chance of tstms.
Mon night..W winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. W swell 2 to 3 ft at 9 seconds. Slight chance of tstms.
Tue..N winds 5 to 10 kt, becoming S in the afternoon. Wind waves 2 ft or less. W swell 2 to 3 ft at 9 seconds. Slight chance of tstms.
Tue night..NW winds 10 to 15 kt. Wind waves 2 ft or less. W swell 2 to 3 ft at 9 seconds. Slight chance of tstms in the evening, then slight chance of rain.
Wed..NW winds 15 to 20 kt. Combined seas 2 to 4 ft. Chance of rain.
Thu..W winds 10 to 15 kt. Wind waves 1 to 3 ft. W swell 2 ft.
PZZ600 242 Pm Pdt Sat Apr 4 2020
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 21z, or 2 pm pdt, a 1006 mb low pressure center was located 100 nm northwest of crescent city ca. The low has an associated cold front that has just moved onshore the northern california coast. The storm system will impact the waters off the central coast and southern california Sunday through Thursday and there is a slight chance of Thunderstorms late Sunday through Wednesday.


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 042126 AFDLOX

Area Forecast Discussion National Weather Service Los Angeles/Oxnard CA 226 PM PDT Sat Apr 4 2020

SYNOPSIS. 04/828 AM.

An increase in onshore flow today will bring slightly cooler temperatures and some morning stratus to the coasts and valleys. From Sunday through the middle of next week, a powerful late season storm will bring significant rain and mountain snowfall to the area.

SHORT TERM (TDY-TUE). 04/223 PM.

Varying amounts of stratocu lingered early this afternoon over the coast, vlys and some mountain areas from southern SBA County thru VTU/L.A. Counties. Elsewhere mostly sunny skies prevailed. Little change is expected thru the rest of the afternoon as a moist onshore flow increases. Gusty W to NW winds will affect the Central coast and Antelope Vly by this afternoon as well. Temps will remain on the cool side, with the coast and vlys topping out in the 60s to near 70.

We are still on track for significant and unseasonable amounts of pcpn over the next several days. In fact, there is the potential for many areas to recieve rainfall far exceeding what we normally see for the entire month of April, including downtown L.A. where the normal April rainfall is 0.91 inch. This should help to go a long way to bringing seasonal rainfall totals for many areas closer to normal or possibly even above normal in some locations.

An upper level low pressure system off the WA coast this afternoon is forecast to drop S along the W coast thru Sun to a position off the nrn CA coast by late Sun, push further S to off the coast of Monterey County by late Mon, then become nearly stationary SW of Point Conception on Tue.

An associated frontal system will start to move into SLO County late tonight with an increasing chance of rain. Rain will develop and increase over the rest of SW CA on Sun. A band of moderate to heavy rain is expected with the front mainly over SBA/VTU Counties Sun night, then the focus of the heavier pcpn will move into L.A. County on Mon as the front edges E, altho additional showers will affect much of the rest of the forecast area. Gusty S to SE winds can also be expected along and ahead of the front, bringing enhanced orographic pcpn to the S-facing foothills and mtns. Showers will then persist across the region Mon night and Tue.

Additionally, there will be enough instability and upper level diffluence to warrant a mention of a slight chance of thunderstorms for many areas Sunday night through Tue evening. Any thunderstorms that develop would be capable of producing heavy precipitation, gusty winds, small hail and dangerous cloud-to-ground lightning.

Rainfall totals through Tue are expected to generally range from 1.00-2.00 inches for the coastal/valley areas with 1.50-3.00 inches in the foothills and mountains. Local rain totals to 4.00 inches will be possible in some mountain areas. Rainfall rates of 0.25-0.50 inches/hour are expected with local rates up to 0.75 inches per hour. With any thunderstorm activity, hourly rainfall rates could even be higher. Recent burn areas will likely be impacted by the rain with the potential for minor mud and debris flows.

Snow levels on Sunday will range between 6000-6500 feet then will drop to 5000-5500 feet on Monday, and to 4000-4500 feet by early Tue morning. There will likely be significant snow accumulations, especially above 5500 feet. Given the potential conditions (snowfall and wind), a WINTER STORM WATCH is in effect for the Ventura/LA county mountains from late Sunday afternoon/evening through Tuesday afternoon. There is the potential for wind gusts up to 45 to 60 mph in the high mountains, as well as snow accumulations of 1 to 2 feet or more above 5500 feet. In addition, lower snow levels early Tue could result in travel issues along Interstate 5 over the Grapevine.

LONG TERM (WED-SAT). 04/223 PM.

The EC and GFS differ on the speed of the upper low moving E and out of the area on Wed, with the EC moving the system slowly E across the SoCal Bight, while the GFS pushes it quickly into the CA/Mexico border Wed morning and into srn AZ Wed afternoon. The EC stubbornly holds on to the upper level low over inland srn CA to the AZ border Wed night and Thu while the GFS starts to build upper level ridging into srn CA. The NBM continued POPs over the area Wed thru Thu reflecting a lean toward the EC solution, so a chance of showers and mountain snow showers will linger Wed, with a slight chance of showers and mountain snow showers on Thu. However, there is only moderate confidence in the pcpn forecast especially for Thu. Dry and warmer weather is then expected Fri and Sat as some upper level ridging moves into the area.

Temps will continue to be a few degrees below normal Wed and Thu, then warm to slightly below normal for many areas Fri, and near normal to slightly above normal for Sat.

AVIATION. 04/1906Z.

At 17z at KLAX . the inversion was near 4350 feet. The top of the inversion was near 5550 feet with a temperature of about 6 degrees Celsius.

Overall . Low to moderate confidence in the current TAF package. Low CIGs in the coastal and adjacent valley areas will likely linger through the day though the CIGs may bounce between MVFR and VFR at times. Low level clouds and at least rain in the vicinity will move across the region ahead of an incoming cold front during the forecast period. The primary uncertainty is regards the timing of the incoming front and its impact on the existing low clouds and timing of the rain.

KLAX . Low to moderate confidence in the current TAF. Low CIGs will likely linger through the day though the CIGs will bounce between MVFR and VFR. Rain will move into the vicinity by late morning tomorrow with steady rain arriving by late afternoon. The primary uncertainty is regards the timing of the incoming front and its impact on the existing low clouds and timing of the rain. No east winds above 8 kts will occur during the forecast period.

KBUR . Low to moderate confidence in the current TAF. Low CIGs will likely linger through the day though the clouds will bounce between MVFR and VFR. Rain will move into the vicinity by late morning tomorrow with steady rain arriving by late afternoon. The primary uncertainty is regards the timing of the incoming front and its impact on the existing low clouds and timing of the rain.

MARINE. 04/221 PM.

Outer waters . Small Craft Advisory (SCA) level conditions will linger in the central and southern outer waters through this evening but then will diminish to below criteria. SCA conditions will redevelop Sunday morning and continue into early Monday. There is a 40 percent chance of SCA winds on Wednesday, otherwise conditions will remain below criteria through Thursday.

Nearshore waters . SCA Conditions will develop in the nearshore waters north of Point Sal on Sunday and continue into early Monday then conditions will remain SCA levels through Thursday. Conditions in the nearshore waters south of Point Conception will remain below SCA criteria through Thursday but have a 40 percent chance of SCA winds developing Sunday night.

All waters . Thunderstorms will be possible at times but especially Tuesday and Wednesday.

LOX WATCHES/WARNINGS/ADVISORIES. CA . Winter Storm Watch in effect from Sunday afternoon through Tuesday afternoon for zone 53. (See LAXWSWLOX). Winter Storm Watch in effect from Sunday evening through Tuesday afternoon for zone 54. (See LAXWSWLOX). PZ . Small Craft Advisory in effect until 3 PM PDT this afternoon for zones 673-676. (See LAXMWWLOX).

.HAZARD POTENTIAL OUTLOOK (TUE-SAT).

Numerous rain and mountain snow showers are expected Tuesday and Wednesday, with a slight chance of thunderstorms for much of the period. Showers will decrease on Thursday. Impacts will include minor urban flooding and difficult mountain travel.



PUBLIC . Sirard AVIATION . Kj MARINE . Kj SYNOPSIS . RAT

weather.gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 29 mi30 min WNW 7.8 G 9.7 59°F 61°F1012 hPa (-1.4)56°F
NTBC1 - Santa Barbara, CA - 9411340 29 mi54 min WSW 11 G 13 59°F 1011.8 hPa
46251 31 mi30 min 58°F4 ft
46053 - E. SANTA BARBARA - 12NM Southwest of Santa Barbara, CA 32 mi20 min W 14 G 16 56°F 58°F1012.2 hPa54°F
46221 - Santa Monica Bay, CA (028) 39 mi34 min 61°F3 ft
ICAC1 - 9410840 - Santa Monica Pier 41 mi42 min W 8.9 G 9.9 59°F 63°F1011.9 hPa

Wind History for Santa Barbara, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Oxnard, Oxnard Airport, CA5 mi39 minW 1310.00 miA Few Clouds61°F50°F67%1011.5 hPa
Point Mugu, Naval Air Warfare Center, CA8 mi38 minW 117.00 miA Few Clouds62°F50°F65%1011.9 hPa
Camarillo, Camarillo Airport, CA10 mi35 minW 10 G 1610.00 miA Few Clouds66°F48°F54%1012 hPa

Link to 5 minute data for KOXR

Wind History from OXR (wind in knots)
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Last 24hrW10W7W7SW3CalmCalmCalmCalmNE4E4NE4E3NE4NE5CalmNE5NE34SW5SW5W8W11W13W13
1 day ago----W9NW3E3E4E3CalmNE4NE3N6NE5NE3NE4NE4NE6NE6SW4W7W9W10W13W11SW9
2 days agoSW7W10W8SW6SW3S3E4NE6E5E5SW6W3E4NE3CalmCalmW33W4W10W12W13--W11

Tide / Current Tables for Port Hueneme, California
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Port Hueneme
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Sat -- 01:18 AM PDT     1.84 feet Low Tide
Sat -- 04:42 AM PDT     Moonset
Sat -- 06:39 AM PDT     Sunrise
Sat -- 07:10 AM PDT     5.16 feet High Tide
Sat -- 02:04 PM PDT     -0.72 feet Low Tide
Sat -- 03:38 PM PDT     Moonrise
Sat -- 07:20 PM PDT     Sunset
Sat -- 08:29 PM PDT     4.46 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.21.91.92.43.24.14.85.254.33.11.80.5-0.4-0.7-0.50.41.62.83.84.44.43.93

Tide / Current Tables for Ventura, California
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Ventura
Click for Map
Sat -- 01:21 AM PDT     1.84 feet Low Tide
Sat -- 04:43 AM PDT     Moonset
Sat -- 06:39 AM PDT     Sunrise
Sat -- 07:09 AM PDT     5.16 feet High Tide
Sat -- 02:07 PM PDT     -0.72 feet Low Tide
Sat -- 03:38 PM PDT     Moonrise
Sat -- 07:20 PM PDT     Sunset
Sat -- 08:28 PM PDT     4.46 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.21.91.92.43.24.14.85.254.33.11.80.6-0.3-0.7-0.50.31.52.83.84.44.43.93.1

Weather Map
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wmap_P
GEOS 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 (19,4,5,8)
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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 numerous 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.