Thursday, December12, 2019
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Marine Weather and Tides
Avilla Beach, CA

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:59AMSunset 4:52PM Thursday December 12, 2019 4:50 PM PST (00:50 UTC) Moonrise 5:35PMMoonset 7:26AM Illumination 98% Phase: Waning Gibbous; Moon at 16 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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PZZ670 Point Piedras Blancas To Point Sal From 10 To 60 Nm- 205 Pm Pst Thu Dec 12 2019
.small craft advisory in effect through late Sunday night...
Tonight..NW winds 10 to 15 kt. Wind waves 2 ft or less. NW swell 10 to 12 ft at 17 seconds, building to 12 to 13 ft at 16 seconds after midnight.
Fri..NW winds 10 to 15 kt. Wind waves 2 ft or less. NW swell 12 to 13 ft at 17 seconds.
Fri night..NW winds 10 to 15 kt, becoming 15 to 20 kt after midnight. Wind waves 2 to 3 ft. NW swell 12 to 13 ft at 17 seconds.
Sat..NW winds 15 to 20 kt with gusts to 25 kt. Combined seas 12 to 13 ft dominant period 17 seconds.
Sat night..NW winds 15 to 20 kt with gusts to 25 kt, becoming 20 to 25 kt after midnight. Combined seas 11 to 13 ft dominant period 15 seconds.
Sun..NW winds 20 to 30 kt. Combined seas 11 to 13 ft.
Sun night..N winds 20 to 30 kt, becoming 10 to 20 kt with gusts to 25 kt after midnight. Combined seas 10 to 12 ft.
Mon..NE winds 10 to 15 kt. Wind waves 2 ft or less. NW swell 7 to 10 ft.
Tue..SE winds 15 to 25 kt with gusts to 30 kt. Combined seas 6 to 8 ft. Slight chance of rain.
PZZ600 205 Pm Pst Thu Dec 12 2019
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 21z or 1 pm pst, a 1027 mb high was over utah with a ridge extending to a 1026 mb high 400 nm southwest of point conception.


7 Day Forecast for Marine Location Near Avilla Beach, CA
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location: 35.17, -120.74     debug


Area Discussion for - Los Angeles/Oxnard, CA
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FXUS66 KLOX 122249 AFDLOX

Area Forecast Discussion National Weather Service Los Angeles/Oxnard CA 249 PM PST Thu Dec 12 2019

SYNOPSIS. 12/840 AM.

Temperatures will be a few degrees above normal through Friday under partly cloudy skies. Large westerly swell will bring high surf through the weekend. Light rain and snow is expected Saturday into early Sunday in mountain areas. Areas of gusty northerly winds will persist through early next week.

SHORT TERM (TDY-SUN). 12/156 PM.

We managed to get at least one 80 degree high temperature today from Woodland Hills (record is 86 there) while many other areas south of Pt Conception were well into the 70s for the first time since before Thanksgiving. A little cooler up north but still a few degrees above normal.

Another nice day on tap Friday but we'll probably cool a degree or two across coast/valleys as we start trending onshore by mid day.

Still expecting some locally gusty northerly winds especially srn SB County and I5 corridor areas but below advisory levels.

Temps will come crashing down below normal again over the weekend as a cold front pushes through Saturday night and clouds increase. The trough isn't taking a favorable path for precip in most of our area as northwest flow will continue to dominate through the period. However, that will favor the north facing slopes from the Grapevine to the Cuyama Valley as well as southeast SLO County. Best precip chances will be from nrn Ventura County through the Grapevine and pops there have been increased to likely from late Saturday through early Sunday. Not a whole lot of moisture to work with so we're probably only looking at an inch or two of accumulation. But the cold air coming behind it Saturday night will lower snow levels to around 3500' and some light snow accumulations are possible at pass level over Interstate 5.

Strong northwest winds will accompany the cold front Saturday into early Sunday. Advisory level and possibly low end warning level winds expected in and around the Grapevine while advisory levels likely in the Antelope Valley. Gusty west winds expected at lower elevations Saturday, especially near the coast, but probably just below wind advisory levels.

Dry, breezy, and cool weather expected Sunday with gusty northerly winds continuing, strongest in the mountains. Some of the ECMWF ensembles showing advisory level winds even down into the LA/Ventura valleys.

LONG TERM (MON-THU). 12/206 PM.

A modest upper level ridge keep the area dry Monday/Tuesday with moderate offshore gradients in place. Minimal upper support for Santa Ana winds so likely sub-advisory level northeast winds both days, but strongest on Tuesday. Here again the EC ensembles are stronger and do favor some advisory level winds across LA/Ventura Counties. The air mass remains quite cool however so temperatures will likely stay in the 60s across lower elevations despite the offshore breezes.

Plenty of uncertainty for the middle of next week as models remain at odds regarding the strength of the ridge across the west. The EC, including most of the ensembles, is much stronger, thus delaying and significantly weakening the approaching trough from the west. Opted to keep pops on the low side for Wed but increase them slightly Thu as roughly half of the EC ensembles bring rain to about Ventura County by then. Either way a fairly light precip event with minimal impacts.

AVIATION. 12/2248Z.

At 2245Z, the marine inversion at KLAX was based at 300 feet. The top of the inversion was 2300 feet with a temperature of 20 degrees Celsius.

For TAF sites south of Point Conception, high confidence in 00Z TAFs as VFR conditions are anticipated.

For TAF sites north of Point Conception, low to moderate confidence in 00Z TAFs. Moderate confidence in development of CIG/VSBY restrictions 10Z-17Z, but low confidence in timing and flight category.

KLAX . High confidence in 00Z TAF as VFR conditions are anticipated through the period. No significant easterly wind component is anticipated.

KBUR . High confidence in 00Z TAF as VFR conditions are anticipated through the TAF period.

MARINE. 12/118 PM.

For the Outer Waters, high confidence in current forecast. Small Craft Advisory (SCA) level winds and/or seas will continue through at least late Sun night. There is also a 50% chance of Gale force winds Sat afternoon and Sat night for PZZ676. With the gusty winds, short-period, choppy seas will be likely. High seas over 10 feet will continue this evening through late Sun night, therefore a Small Craft Advisory is not only in effect for winds, but for hazardous seas.

For the Inner Waters north of Point Sal, moderate to high confidence in current forecast. There is a 60%-70% chance of SCA level winds Sat thru Sun night. With the gusty winds, short- period, choppy seas will be likely. High seas over 10 feet will develop this evening causing a Small Craft Advisory to go into effect for hazardous seas which, along with the gusty winds, will remain in effect through late Sun night.

For the Inner Waters south of Point Conception, moderate to high confidence in current forecast. There is a 60% chance of SCA level winds across the western half of the Santa Barbara Channel through this evening, and 80% chance from Fri evening through Sun, (especially across western sections) and a 40% chance of Gale force gusts late Sat afternoon thru Sat night. The winds will shift to the north on Mon then to the east on Tue, with a 30%-40% chance of SCA level winds at times.

A large and long period west to northwest swell will impact the coastal waters this evening through at least late Sun night, resulting in hazardous sea conditions and large breaking waves near shore, especially with a large short period wind swell on top of that. Breaking waves at the Morro Bay and Ventura Harbor entrances will be possible.

BEACHES. 12/122 PM.

A large long-period west to northwest swell will fill into the coastal waters of southwest California by early this evening, peak on Friday into Saturday morning, then slowly diminish over the remainder of the weekend.

Surf will likely peak between 12 and 16 feet for the Central Coast. A High Surf Advisory is in effect for the Central Coast through Sunday morning.

A High Surf Advisory is also in effect from 8 PM this evening through noon Monday for the beaches south of Point Conception with surf between 6 and 10 feet possible. Highest surf will occur across exposed west facing beaches. Strong rip currents and dangerous breaking waves are expected.

With high tides around 6.5 feet Friday and Saturday, minor coastal flooding is possible during the late morning high tides. Any coastal flooding impacts should be confined to the beaches, with flooding possible in the most vulnerable parking lots, bike paths, and walkways. A Coastal Flood Advisory may be issued tomorrow. There is a chance of more impactful flooding over vulnerable roads in the Ventura area.

LOX WATCHES/WARNINGS/ADVISORIES. CA . High Surf Advisory in effect until noon PST Monday for zones 34-35. (See LAXCFWLOX). High Surf Advisory in effect from 8 PM this evening to noon PST Sunday for zones 39>41-87. (See LAXCFWLOX). PZ . Small Craft Advisory in effect until 3 AM PST Monday for zones 645-670-673. (See LAXMWWLOX). Small Craft Advisory in effect until 9 PM PST this evening for zone 650. (See LAXMWWLOX). Gale Watch in effect from Saturday afternoon through late Saturday night for zones 650-655-676. (See LAXMWWLOX). Small Craft Advisory in effect until 3 PM PST Saturday for zone 676. (See LAXMWWLOX).

.HAZARD POTENTIAL OUTLOOK (SUN-THU).

Light snow may create driving hazards over the mountains Saturday night into Sunday, including Interstate 5 over the Grapevine. High surf is likely Sunday at area beaches and minor coastal flooding is possible. Gusty northerly winds expected Sunday in many areas but strongest in the mountains. Gusty northeast winds possible across parts of LA/Ventura Counties Monday and Tuesday.



PUBLIC . MW AVIATION . RAT MARINE . Sirard BEACHES . Sirard SYNOPSIS . jld

weather.gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CPXC1 0 mi17 min W 2.9 G 4.1 67°F 1022.9 hPa58°F
PSLC1 - 9412110 - Port San Luis, CA 1 mi57 min WSW 11 G 16 67°F 60°F1023.8 hPa
46215 - Diablo Canyon, CA (076) 7 mi51 min 62°F6 ft
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 21 mi31 min NNW 14 G 18 59°F 60°F1024.2 hPa56°F
PTGC1 - Point Arguello, CA 41 mi51 min N 21 G 24 59°F 1022.4 hPa (-1.0)
46259 49 mi51 min 59°F9 ft
HRVC1 49 mi69 min 59°F 1023.5 hPa

Wind History for Port San Luis, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Luis Obispo, San Luis Obispo County-Mc Chesney Field, CA7 mi55 minNW 1110.00 miFair63°F57°F81%1023.4 hPa
Santa Maria Public Airport/Capt G Allan Hancock Field, CA24 mi60 minWNW 910.00 miA Few Clouds64°F57°F78%1023.5 hPa

Link to 5 minute data for KSBP

Wind History from SBP (wind in knots)
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Last 24hrNW9NW8NW6CalmCalmE3CalmCalmSE3CalmCalmCalmCalmCalmCalmCalmCalmNW8NW11NW12NW13NW17NW12
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1 day agoNW9CalmNW5CalmSE3CalmE5NE3CalmSE5E5CalmCalmSE3SE4CalmCalmCalmCalmNW10NW12NW10W10W9
2 days agoN94NE4S34E3CalmCalmSE4CalmS4E6CalmSE5E5SE3CalmCalmCalmCalm3SW3SE4S3

Tide / Current Tables for Avila, California
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Avila
Click for Map
Thu -- 02:31 AM PST     -0.57 feet Low Tide
Thu -- 07:01 AM PST     Sunrise
Thu -- 07:25 AM PST     Moonset
Thu -- 08:51 AM PST     3.51 feet High Tide
Thu -- 04:17 PM PST     -3.76 feet Low Tide
Thu -- 04:51 PM PST     Sunset
Thu -- 05:34 PM PST     Moonrise
Thu -- 10:52 PM PST     0.88 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.3-0.2-0.5-0.5-0.10.61.62.63.33.53.12.20.8-0.8-2.2-3.2-3.7-3.6-2.9-1.9-0.80.20.70.9

Tide / Current Tables for Morro Bay, California
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Morro Bay
Click for Map
Thu -- 03:16 AM PST     2.13 feet Low Tide
Thu -- 07:02 AM PST     Sunrise
Thu -- 07:26 AM PST     Moonset
Thu -- 09:49 AM PST     5.15 feet High Tide
Thu -- 04:51 PM PST     Sunset
Thu -- 05:34 PM PST     Moonrise
Thu -- 05:41 PM PST     -0.38 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.72.52.32.12.22.433.74.555.14.84.13210.2-0.3-0.400.71.52.22.6

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.
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Wind Forecast for Los Angeles/Oxnard, CA (19,4,5,8)
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Ground Weather Radar Station Vandenberg AFB, CA
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