Thursday, July29, 2021
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Marine Weather and Tides
Channel Islands Beach, CA

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:05AMSunset 8:01PM Thursday July 29, 2021 5:08 PM PDT (00:08 UTC) Moonrise 11:41PMMoonset 11:43AM Illumination 69% Phase: Waning Gibbous; Moon at 20 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- 204 Pm Pdt Thu Jul 29 2021
.small craft advisory in effect through late tonight...
Tonight..W winds 10 to 20 kt with gusts to 25 kt, becoming variable 10 kt or less after midnight. Strongest western portion. Combined seas 2 to 4 ft dominant period 5 seconds.
Fri..Winds variable 10 kt or less, becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 2 to 3 ft at 5 seconds.
Fri night..W winds 10 to 15 kt, becoming 5 to 10 kt after midnight. Wind waves 2 ft or less. W swell 2 to 3 ft at 5 seconds.
Sat..NW winds 5 to 10 kt, becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 2 ft at 5 seconds.
Sat night..W winds 10 to 15 kt, becoming 5 to 10 kt after midnight. Wind waves 2 ft or less. W swell 3 ft at 7 seconds.
Sun..Winds variable 10 kt or less, becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 2 to 3 ft at 7 seconds.
Sun night..W winds 10 to 20 kt, becoming nw 10 to 15 kt after midnight. Wind waves 2 to 3 ft. W swell 2 to 3 ft at 7 seconds. Patchy fog after midnight.
Mon..W winds 15 to 20 kt with gusts to 25 kt. Combined seas 3 to 5 ft.
Tue..W winds 15 to 20 kt with gusts to 25 kt. Combined seas 2 to 4 ft.
PZZ600 204 Pm Pdt Thu Jul 29 2021
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 pdt, a 1024 mb high was located 700 nm west of point conception. A 1005 mb low was centered near 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 292121 AFDLOX

Area Forecast Discussion National Weather Service Los Angeles/Oxnard CA 221 PM PDT Thu Jul 29 2021

SYNOPSIS. 29/929 AM.

A warm air mass will remain in place due to an area of high pressure aloft over the West. Some cooling is expected over the weekend as an area of low pressure brushes the area, but high pressure aloft will build back in for next week. Isolated afternoon and evening thunderstorms are possible across some mountain areas and the deserts Friday and Saturday.

SHORT TERM (TDY-SAT). 29/206 PM.

A stubborn marine inversion and moderate onshore flow is keeping some low clouds pinned to the Central Coast. There is just enough moisture to bring some build ups to the tallest peaks across northern VTA county mtns and the eastern San Gabriel's this afternoon. Cannot rule out a brief shower but most likely it will be just clouds. There will be just enough of a north push across SBA county this evening to produce advisory level gusts across the western half of the SBA south coast. The marine layer will remain under 900 ft this evening and low clouds will cover most of the coastal areas by dawn Friday. The SBA south coast will be the exception as the north push will keep the area cloud free.

Friday will be rather similar to today. Morning low clouds will slowly clear and the Central Coast beaches will remain cloudy. Max temps will be a little below normal across the coasts and a little above normal across the interior. There monsoon moisture will push just a little more to the west and there will be a slight chc of afternoon showers/TSTMs across the LA mtns, the Antelope Vly and the northern portion of the VTA mtns. The increased moisture will also bring enough mid level clouds to the area to make it a partly cloudy afternoon.

A large mass of mid level clouds (most likely debris clouds from the east) is forecast to move over the area Friday evening and into Saturday morning. So much clouds in fact that skies will be mostly cloudy. There will be some low clouds and fog along the near coasts as well.

The mid level clouds will move out by mid or late morning. This will allow another round of possible afternoon convection over the VTA mtns, the LA mtns and Antelope Vly. The clouds will make for a cooler start to the day and this will knock a degree or two of the max temps compared to Friday.

Two things change on Sunday. The first is that sfc high pressure will build into NV and will set up weak offshore flow. This will greatly limit the stratus formation and low clouds will be patchy at best south of Pt Conception. There will likely be better coverage across the Central Coast. This will also bring a few degrees of warming to the area - esp the coasts. The second change will be the switch to dry SW flow aloft as the high is pushed to the east by a long wave east pac trof. The dry flow aloft will shunt the convective threat well to the east of LA county.

LONG TERM (SUN-WED). 29/219 PM.

The EC and GFS are not in the best of agreement and the various ensemble members also show quite a bit of variance. But despite the differences either solution will not result in too different of a fcst. Both mdls slide the upper high back to the west. The GFS shows much more troffing over the state than does the EC and it also places the center of the upper high to the east of the area further to the east. The GFS solution has a slightly better chc of allowing some monsoon moisture in but at this time it looks like that moisture will stay to the east of the area. The EC's hgts are a tad higher so there is a chc the fcst max temps are a little too low.

Otherwise onshore flow will slowly strengthen and the night through morning low cloud pattern will reestablish itself. The high hgts will keep the marine layer smooshed to under 1000 ft which will keep it out of most of the vlys (probably all of the vlys save for the Santa Ynez)

A little warming both days Tuesday and Wednesday (little or no change slated for Monday and Thursday) as hgts increase over the area. By Wednesday most of the interior (including the lower mtn elevations) will see triple digit heat. The vlys will have max temps in the 90s with an outside chc of some 100 degree readings in the warmest locations. These max temps, excluding the coasts, will be 3 to 6 degrees above normal.

AVIATION. 29/1837Z.

At 1754Z, the marine layer at KLAX was 700 ft deep. The top of the inversion was near 2300 ft with a temperature of 28 degrees C.

Low clouds were widespread in coastal areas from Ventura County northward and have pushed into portions of the Santa Ynez Valley and the Ventura County Valleys. Clouds have also just pushed into immediate coastal sections of L.A. County. Conds were mostly LIFR to VLIFR. Skies should clear by mid day. Expect a similar low cloud pattern tonight. Afternoon clouds are possible in the mountains and deserts, but thunderstorms are not expected.

KLAX . Overall, moderate confidence in the 18Z TAF. There is a 20% chance that skies will remain clear tonight.

KBUR . High confidence in the 18Z TAF with VFR conds thru the pd.

MARINE. 29/135 PM.

Across the outer waters, fairly high confidence that winds and seas will remain below Small Craft Advisory (SCA) levels thru Sun in the northern zone (PZZ670), then there is a 40-50% chance of SCA level winds Mon. For the southern two zones (PZZ673/676), expect SCA level winds thru late tonight. There is a 30% chance of SCA level winds Fri afternoon/evening, then a 40-50% chance of SCA level winds Sun thru Mon.

For the inner waters north of Point Sal, winds and seas are expected to remain below SCA levels thru Sun, then on Mon, there is a 30% chance of SCA level winds in the afternoon and evening.

In the Santa Barbara Channel, expect SCA level winds across western portions this afternoon through late tonight. Otherwise SCA conds are not expected through Sun. There is a 40% chance of SCA level winds Mon, mainly across western sections.

Across the southern inner waters zones, there is a 20-30% chance of SCA winds across northern and western portions of the zone, especially near Anacapa Island, this afternoon and evening, and again Mon afternoon and evening. Otherwise, SCA conds are not expected thru Mon.

LOX WATCHES/WARNINGS/ADVISORIES. CA . Wind Advisory in effect until 3 AM PDT Friday for zones 39-52. (See LAXNPWLOX). PZ . Small Craft Advisory in effect until 3 AM PDT Friday for zones 650-673-676. (See LAXMWWLOX).

.HAZARD POTENTIAL OUTLOOK (SAT-WED).

Monsoonal thunderstorms are possible Saturday afternoon.



PUBLIC . Rorke AVIATION . Sweet/DB MARINE . Sweet SYNOPSIS . Jackson

weather.gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NTBC1 - Santa Barbara, CA - 9411340 29 mi92 min WSW 11 G 15 67°F 1012.4 hPa
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 29 mi38 min NW 7.8 G 9.7 66°F 69°F1011.5 hPa63°F
46053 - E. SANTA BARBARA - 12NM Southwest of Santa Barbara, CA 31 mi38 min W 18 G 23 61°F 64°F1012.7 hPa59°F
46251 31 mi42 min 66°F4 ft
46268 37 mi68 min 65°F 65°F3 ft
46221 - Santa Monica Bay, CA (028) 38 mi42 min 63°F3 ft
ICAC1 - 9410840 - Santa Monica Pier 41 mi50 min WSW 12 G 13 64°F 67°F1012.4 hPa

Wind History for Santa Barbara, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Oxnard, Oxnard Airport, CA5 mi77 minW 1910.00 miFair and Breezy71°F59°F66%1011.9 hPa
Point Mugu, Naval Air Warfare Center, CA8 mi76 minWNW 1210.00 miPartly Cloudy71°F58°F63%1012.5 hPa
Camarillo, Camarillo Airport, CA10 mi73 minWSW 810.00 miFair76°F58°F54%1012.7 hPa

Link to 5 minute data for KOXR

Wind History from OXR (wind in knots)
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Last 24hrW16W17W15W9NW6NW6NW5W4CalmW3W7W6W7NW33W4NW8W13
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1 day agoW14W15W11W9W8W8W8W7W6W4W3N3W4W4--W7NW9W13W12W12W13W14W16W17
2 days agoW6W6W5CalmCalmS3CalmCalmS3W4W3CalmCalmCalmW6NW6W8NW8SW6W9W12W11W12W15

Tide / Current Tables for Port Hueneme, California
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Port Hueneme
Click for Map
Thu -- 01:18 AM PDT     4.39 feet High Tide
Thu -- 06:06 AM PDT     Sunrise
Thu -- 08:01 AM PDT     0.92 feet Low Tide
Thu -- 11:43 AM PDT     Moonset
Thu -- 02:47 PM PDT     4.49 feet High Tide
Thu -- 08:00 PM PDT     Sunset
Thu -- 08:57 PM PDT     2.26 feet Low Tide
Thu -- 11:40 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.14.44.33.93.22.41.71.10.91.11.62.43.23.94.44.54.33.83.32.72.42.32.42.7

Tide / Current Tables for Ventura, California
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Ventura
Click for Map
Thu -- 01:17 AM PDT     4.39 feet High Tide
Thu -- 06:06 AM PDT     Sunrise
Thu -- 08:04 AM PDT     0.92 feet Low Tide
Thu -- 11:43 AM PDT     Moonset
Thu -- 02:46 PM PDT     4.49 feet High Tide
Thu -- 08:00 PM PDT     Sunset
Thu -- 09:00 PM PDT     2.26 feet Low Tide
Thu -- 11:40 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.14.44.33.93.22.41.71.10.91.11.62.43.23.94.44.54.33.83.32.72.42.32.42.7

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