Saturday, September19, 2020
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Marine Weather and Tides
Hasley Canyon, CA

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 6:39AMSunset 6:56PM Saturday September 19, 2020 11:33 AM PDT (18:33 UTC) Moonrise 9:11AMMoonset 8:47PM Illumination 6% Phase: Waxing Crescent; Moon at 2 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 Sat Sep 19 2020
.small craft advisory in effect through late tonight...
Today..Western portion, W to nw winds 10 to 15 kt, increasing to 15 to 25 kt. Eastern portion, W winds 5 to 10 kt, becoming 10 to 20 kt in the afternoon. Combined seas 4 to 6 ft dominant period 8 seconds.
Tonight..Western portion, W to nw winds 15 to 25 kt, becoming 10 to 15 kt late. Eastern portion, W winds 10 to 20 kt, becoming 5 to 10 kt late. Combined seas 4 to 6 ft dominant period 8 seconds. Patchy dense fog with vsby 1 nm or less after midnight.
Sun..W winds 5 to 10 kt, becoming 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 2 to 4 ft at 8 seconds. Patchy dense fog with vsby 1 nm or less in the morning.
Sun 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 8 seconds. Patchy fog after midnight.
Mon..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 8 seconds. Patchy fog in the morning.
Mon night..W winds 10 to 15 kt, becoming 5 to 10 kt late. Wind waves 2 ft or less. W swell 2 to 3 ft at 8 seconds. Patchy fog after midnight.
Tue..W winds 5 to 10 kt early, becoming 10 to 15 kt. Wind waves 2 ft. W swell 2 to 4 ft. Patchy fog.
Wed..W winds 10 to 15 kt. Wind waves 2 ft. W swell 2 to 4 ft.
PZZ600 906 Am Pdt Sat Sep 19 2020
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 1023 mb high pressure center was located 1200 nm west of point conception, ca. A 1008 mb thermal low was centered near las vegas.


7 Day Forecast for Marine Location Near Hasley Canyon, CA
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location: 34.63, -118.73     debug


Area Discussion for - Los Angeles/Oxnard, CA
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FXUS66 KLOX 191758 AFDLOX

Area Forecast Discussion National Weather Service Los Angeles/Oxnard CA 1058 AM PDT Sat Sep 19 2020

SYNOPSIS. 19/949 AM.

Temperatures will cool through Monday then warm again late next week. There will be gusty northerly winds across southern Santa Barbara County tonight along with gusty onshore winds this weekend across the LA county mountains and Antelope Valley. Night through morning low clouds and fog will expand into most coastal and lower valley areas by Monday.

SHORT TERM (TDY-MON). 19/945 AM.

Yesterday's upper level trough passage combined with increasing onshore flow near the surface will bring around 4 to 8 degrees of cooling across much of the region today. Satellite imagery showing low clouds and fog confined to the Central Coast and Santa Ynez valley this morning, but starting to dissipate as of 930 am. Otherwise skies will generally be mostly clear today except for extensive smoke across the San Gabriel mountains and Antelope Valley.

The main weather impact through the weekend will be the the gusty south to southwest winds across the San Gabriel mountains and Antelope Vally impacting the Bobcat Fire. Wind gusts of 25 to 35 mph will be common in these areas, but could see isolated gusts up to 40 mph each afternoon in the foothills of the Antelope Valley. Also of note is the upper level winds shifting to a south to southeast trajectory overnight into Sunday morning. The gusty onshore winds combined with low humidities will continue bring elevated fire weather concerns to the Bobcat fire area through the weekend, and could see some brief critical conditions by Sunday as humidities locally fall to single digits.

As far as the sundowner winds are concerned, we saw some wind gusts of 40 to 50 mph last night across western portions of the Santa Barbara south coast and Santa Ynez mountains, strongest near Gaviota. The wind advisory was allowed to expire as of 9 am but are expected sundowner winds to redevelop late this afternoon and evening when wind advisories will likely be needed. For this evning's event, thinking wind speeds will be slightly weaker, generally gusting between 30 and 40 mph from Gaviota to San Marcos Pass, except isolated gusts up to 45 mph near Gaviota.

*** From previous discussion ***

Gusty winds across the outer water will spin up an eddy tonight which will bring low clouds into the LA county coast and as far north as the Ventura Coast (Sundowner winds will prevent the low clouds from reaching the SBA south coast). Concurrently NW winds will again bring low clouds into the Central Coast and Santa Ynez Vly.

Neither the eddy or the onshore push will be strong enough to preclude total clearing and Sunday will be totally sunny by mid morning. The deeper marine layer and stronger onshore flow will bring 2 to 4 degrees of cooling to the coasts and vlys. The interior will warm, however, as the cooler air from ydy's trof finally modifies.

On Monday . a weak 584 DaM trof ripples over the area. It will lift the marine layer across most of the coast and the lower vlys. Aside from the morning stratus (which will linger a little longer than Sunday) it will be a sunny day. The lower hgts and deeper marine layer will knock another 2 to 4 degrees off of the max temps. The coasts and vlys will end 1 to 3 degrees blo normal while the interior will come in 1 to 3 degrees above normal.

LONG TERM (TUE-FRI). 19/326 AM.

Both the EC and GFS agree that Tuesday will be the coolest day of the week with Marine layer clouds and moderate onshore flow.

The EC and GFS further agree that an upper high will move into SoCal from the SW on Wed peak on Thu and then subside on Fri. There will be good offshore trends as well with actual offshore flow forecast both from the North and East on Thursday morning. The marine layer clouds will be greatly diminished on Wed and non existent on Thu and Fri. Max temps will rise 2 to 4 degrees each day. Thursday will be the warmest day of the next 7 with max temps 4 to 8 degrees above normal. There will be several degrees of cooling on Friday but max temps will still end up several degrees above normal.

AVIATION. 19/1757Z.

At 17Z at KLAX, the marine layer was 1300 feet deep. The top of the inversion was a 2500 feet with a temperature of 30C.

Low clouds and fog are expected to move into the Central Coast and the Santa Ynez Valley this evening, and into coastal sections of L.A. and Ventura Counties by or shortly after midnight. Conds are expected to be mostly IFR to LIFR, except locally VLIFR on the Central Coast late. Skies should clear in most areas by 16Z-18Z Sun.

KLAX . Moderate confidence in the 18Z TAF. There is a 20% chance that cigs will arrive as early as 06Z this evening. There is a 20% chance that skies will remain clear tonight.

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

MARINE. 19/1001 AM.

Across the outer waters . Small Craft Advisory (SCA) level winds will continue through late tonight. There is a 20%-30% chance of SCA conditions continuing through Sunday night. There will be local gusts to 35 kt later this afternoon and early this evening as well. SCA level winds are likely again Tuesday and Wednesday across much of the outer waters.

Across the nearshore waters of the Central Coast, SCA level winds are expected this afternoon and evening. Otherwise, good confidence that conditions will remain below SCA levels.

Across the inner waters south of Point Conception, SCA level winds are expected across the western portion of the Santa Barbara Channel late this afternoon through tonight. Otherwise and elsewhere, good confidence that conditions will remain below SCA levels.

Patchy night through morning fog will continue into next week across the coastal waters.

LOX WATCHES/WARNINGS/ADVISORIES. CA . NONE. PZ . Small Craft Advisory in effect from 3 PM this afternoon to 9 PM PDT this evening for zone 645. (See LAXMWWLOX). Small Craft Advisory in effect until 3 AM PDT Sunday for zones 650-670-673-676. (See LAXMWWLOX).

.HAZARD POTENTIAL OUTLOOK (MON-FRI).

No significant hazards expected.



PUBLIC . Gomberg/Rorke AVIATION . DB MARINE . DB SYNOPSIS . Gomberg

weather.gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46268 43 mi33 min 71°F 69°F3 ft
ICAC1 - 9410840 - Santa Monica Pier 45 mi45 min W 4.1 G 5.1 68°F1012.6 hPa
NTBC1 - Santa Barbara, CA - 9411340 53 mi57 min ENE 4.1 G 5.1 65°F 1012.2 hPa

Wind History for Santa Monica, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Link to 5 minute data for KSDB

Wind History from SDB (wind in knots)
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Tide / Current Tables for Ventura, California
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Ventura
Click for Map
Sat -- 05:13 AM PDT     0.36 feet Low Tide
Sat -- 06:43 AM PDT     Sunrise
Sat -- 09:13 AM PDT     Moonrise
Sat -- 11:20 AM PDT     5.88 feet High Tide
Sat -- 05:48 PM PDT     0.21 feet Low Tide
Sat -- 06:57 PM PDT     Sunset
Sat -- 08:49 PM PDT     Moonset
Sat -- 11:50 PM PDT     5.08 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.44.43.21.90.80.40.61.42.74.15.35.85.753.82.41.20.40.20.71.72.94.14.9

Tide / Current Tables for Rincon Island, California
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Rincon Island
Click for Map
Sat -- 05:17 AM PDT     0.28 feet Low Tide
Sat -- 06:44 AM PDT     Sunrise
Sat -- 09:14 AM PDT     Moonrise
Sat -- 11:32 AM PDT     5.75 feet High Tide
Sat -- 05:54 PM PDT     0.17 feet Low Tide
Sat -- 06:57 PM PDT     Sunset
Sat -- 08:50 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.34.53.21.90.80.30.51.22.53.855.65.753.92.51.30.40.20.51.42.63.84.6

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Ground Weather Radar Station Los Angeles, CA
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