Monday, August20, 2018 L-36.com


Marine Weather and Tides
Avilla Beach, CA

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Sunrise 6:25AMSunset 7:45PM Monday August 20, 2018 2:07 AM PDT (09:07 UTC) Moonrise 2:56PMMoonset 12:29AM Illumination 65% Phase: Waxing Gibbous; Moon at 9 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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PZZ645 Point Piedras Blancas To Point Sal Westward Out To 10 Nm- 848 Pm Pdt Sun Aug 19 2018
Tonight..NW winds 10 to 15 kt in the evening, becoming 5 to 10 kt. Wind waves 2 ft or less. Mixed swell nw 3 ft at 8 seconds and S 2 ft at 14 seconds. Patchy fog after midnight.
Mon..Winds variable 10 kt or less, becoming W 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell nw 2 to 3 ft at 8 seconds and S 2 ft at 14 seconds. Patchy fog in the morning.
Mon night..W winds 10 to 15 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. NW swell 3 to 4 ft at 8 seconds. Patchy fog after midnight.
Tue..Winds variable 10 kt or less, becoming W 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell nw 2 to 3 ft at 9 seconds and S 2 ft at 14 seconds. Patchy fog in the morning.
Tue night..W winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. NW swell 3 to 4 ft at 8 seconds. Patchy fog after midnight.
Wed..NW winds 5 to 10 kt, becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell nw 2 to 3 ft at 8 seconds and S 2 ft at 14 seconds. Patchy fog in the morning.
Wed night..NW winds 10 to 15 kt in the evening, becoming 5 to 10 kt. Wind waves 2 ft or less. NW swell 3 to 4 ft at 9 seconds. Patchy fog after midnight.
Thu..NW winds 10 to 15 kt. Wind waves 2 ft or less. NW swell 3 to 4 ft. Patchy fog.
Fri..NW winds 10 to 15 kt. Wind waves 2 ft or less. NW swell 4 to 6 ft. Patchy fog.
PZZ600 848 Pm Pdt Sun Aug 19 2018
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 03z...or 8 pm pdt, a 1031 mb surface high was centered 500 nm northwest of seattle, while a 1001 mb thermal low was near las vegas. The surface high will slide south to near 40n and 140w while weakening through Tuesday.


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 200703
afdlox
area forecast discussion... Updated
national weather service los angeles oxnard ca
1203 am pdt Mon aug 20 2018

Synopsis 19 917 pm.

Continued warm temperatures through the week with overnight and
morning low clouds and fog along the coast. The humidity level
will lessen but remain above normal into next weekend.

Short term (mon-thu) 19 921 pm.

High pressure aloft over southern california will weaken and
retreat to the south and east as a trough of low pressure off the
pacific northwest coast will dig into the northern great basin
through Wednesday. Stronger onshore flow and a slightly deeper
marine layer developing over the next couple of days will bring
some cooling to the region, but temperatures will likely remain on
the warmer side of normal for this time of year.

As the ridge retreats back into the sonoran desert, southeast flow
aloft will increase monsoonal moisture across the region. At the
current time, the best moisture and instability will remain south
and east of the area and no mentionable pops have been added. A
few cloud build-ups are possible across the mountains the next
couple of days.

***from previous discussion***
by Wednesday, the temperatures will nudge up a couple degrees
across inland areas.

Other short term concern will be gusty onshore winds across
interior sections each afternoon and evening from Monday through
Wednesday, as upper level ridge breaks down, and onshore gradients
increase. Onshore winds will be gusting 25 to 35 mph across
interior sections, strongest in the antelope valley, where
isolated gusts as high as 45 mph can be expected near lake
palmdale. These gusty onshore winds combined with lower
humidities will bring elevated fire weather concerns to interior
sections Monday through Wednesday.

Long term (fri-mon) 19 202 pm.

Some weak upper level ridging is expected to build across sw
california Thursday into Friday which could lead to a diminished
marine layer influence and a couple degrees of warming across
interior sections. Then by next weekend, long range models show
the upper level ridge breaking down as southwest upper level
flow increases across the region, bringing the potential for
increased higher level clouds. During the extended period,
the main weather concern will be the potential for gusty
sundowner winds and associated elevated fire weather threat
each night across southern sba county, as GFS model showing
pressure gradients between -3 and -4 mb each evening between
santa barbara and santa maria.

Aviation 20 0702z.

At 0545z at klax, the marine layer was around 1100 feet deep. The
top of the inversion was near 4200 feet with a temperature of 27
degrees celsius.

Moderate confidence in coastal tafs flight cat transitions could
be off by + - 90 minutes. There is a 30 percent chc of ifr conds
at sites with MVFR CIGS forecast.

Low confidence in kbur and kvny with a 40 percent chc of lifr cigs
14z-17z.

Good confidence in desert tafs.

Low confidence in kprb TAF with a 40 percent chc of lifr conds
10z-16z.

Klax... Fairly good confidence in taf. There is a 20 percent chc
of ifr CIGS 10z-15z. Good confidence that any east wind component
will be under 5 kt.VFR transition should occur within 30 min of
fcst.

Kbur... Low confidence in TAF from 12z-16z with a 40 percent chc
of no cigs... Otherwise high confidence.

Marine 19 853 pm.

For the outer waters, a small craft advisory remains in effect
through late tonight between point conception and northwest of
san nicolas island including the outer channel islands. There is
a 30-50 percent chance of small craft advisory level winds each
afternoon and night through Wednesday.

For the inner waters, conditions are expected to remain below
small craft advisory levels through Thursday.

Patchy fog, possibly dense at times will continue to form during
the late night and morning hours, especially north of point
conception through at least Wednesday.

Lox watches warnings advisories
Ca... None.

Pz... Small craft advisory in effect until 3 am pdt early this
morning for zones 673-676. (see laxmwwlox).

Hazard potential outlook (thu-mon)
Gusty sundowner winds and elevated fire weather conditions are
possible for late this week.

Public... Hall gomberg
aviation... Rorke
marine... Hall
synopsis... Kj
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CPXC1 0 mi25 min NNE 4.1 G 5.1 59°F 1013.4 hPa56°F
PSLC1 - 9412110 - Port San Luis, CA 1 mi37 min NE 5.1 G 6 59°F 66°F1013.3 hPa
46215 - Diablo Canyon, CA (076) 7 mi130 min 63°F4 ft
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 21 mi77 min NW 14 G 16 59°F 63°F5 ft1013 hPa (+0.0)
PTGC1 - Point Arguello, CA 41 mi67 min N 22 G 23 58°F 1012.4 hPa (+0.0)

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 mi71 minWNW 47.00 miOvercast59°F55°F90%1012.6 hPa
Santa Maria Public Airport/Capt G Allan Hancock Field, CA24 mi76 minN 05.00 miFog/Mist61°F57°F90%1013 hPa

Wind History from SBP (wind in knots)
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Last 24hrNW4NW3Calm4NW3NW6W6W3Calm4NW9NW14NW16NW16NW18NW13NW12NW9NW9NW85NW7W4W4
1 day agoNW6NW5NW4W3CalmCalmS4SE4CalmW6SW6NW9NW12NW13NW15NW13W6NW7NW6NW6W3NW4NW5NW4
2 days agoCalmSE3CalmCalm--CalmSE5E3CalmSW3NW9NW8NW10NW10NW9NW10NW7NW5NW5W3NW4NW5NW5NW4

Tide / Current Tables for Avila, California
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Avila
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Mon -- 12:55 AM PDT     -2.28 feet Low Tide
Mon -- 01:29 AM PDT     Moonset
Mon -- 06:26 AM PDT     Sunrise
Mon -- 07:34 AM PDT     0.65 feet High Tide
Mon -- 12:11 PM PDT     -0.34 feet Low Tide
Mon -- 03:55 PM PDT     Moonrise
Mon -- 06:24 PM PDT     2.23 feet High Tide
Mon -- 07:45 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-2.1-2.3-2.1-1.5-0.9-0.20.30.60.60.40.1-0.2-0.3-0.20.10.71.41.92.22.21.70.9-0.1-1.1

Tide / Current Tables for Morro Bay, California
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Morro Bay
Click for Map
Mon -- 01:29 AM PDT     Moonset
Mon -- 01:58 AM PDT     0.44 feet Low Tide
Mon -- 06:26 AM PDT     Sunrise
Mon -- 09:02 AM PDT     2.68 feet High Tide
Mon -- 01:20 PM PDT     2.04 feet Low Tide
Mon -- 03:56 PM PDT     Moonrise
Mon -- 07:21 PM PDT     4.39 feet High Tide
Mon -- 07:45 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.20.60.40.611.522.42.62.72.62.52.22.12.12.533.64.14.44.343.42.6

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 (5,6,7,8)
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Ground Weather Radar Station Vandenberg AFB, 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.