Thursday, April27, 2017 L-36.com


Marine Weather and Tides
Avilla Beach, CA

Version 3.4
What's New / NOTES
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:12AMSunset 7:46PM Thursday April 27, 2017 7:31 PM PDT (02:31 UTC) Moonrise 6:28AMMoonset 8:25PM Illumination 4% 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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PZZ670 Point Piedras Blancas To Point Sal From 10 To 60 Nm- 206 Pm Pdt Thu Apr 27 2017
.gale warning in effect through late Friday night...
Tonight..NW winds 25 to 30 kt with gusts to 40 kt. Combined seas 13 to 14 ft dominant period 9 seconds.
Fri..NW winds 20 to 30 kt with gusts to 35 kt. Combined seas 11 to 13 ft dominant period 10 seconds.
Fri night..NW winds 15 to 25 kt with gusts to 35 kt. Strongest western portion. Combined seas 11 to 13 ft dominant period 9 seconds...subsiding to 10 to 11 ft dominant period 10 seconds after midnight.
Sat..NW winds 15 to 25 kt with gusts to 30 kt...becoming 10 to 20 kt with local gusts to 25 kt in the afternoon. Combined seas 8 to 9 ft dominant period 11 seconds.
Sat night..NW winds 10 to 20 kt with gusts to 30 kt. Wind waves 2 to 4 ft. NW swell 5 to 6 ft at 11 seconds.
Sun..N winds 10 to 20 kt with gusts to 25 kt...becoming nw 20 to 25 kt with gusts to 30 kt in the afternoon. Combined seas 6 to 7 ft dominant period 11 seconds.
Sun night..NW winds 15 to 25 kt with gusts to 30 kt. Combined seas 7 to 8 ft dominant period 9 seconds.
Mon..NW winds 15 to 25 kt with gusts to 30 kt. Combined seas 9 to 10 ft.
Tue..NW winds 15 to 25 kt with gusts to 30 kt. Combined seas 8 to 10 ft.
PZZ600 206 Pm Pdt Thu Apr 27 2017
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 1028 mb high was located 700 nm W of point conception and a 990 mb low was located in nm. Widespread gale force winds are expected across the outer water through the end of the week. Across the inner waters...small craft advisory conditions are expected through the end of the week with local gale force gusts possible across western portions of the nearshore waters at times through Fri.

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 280016 aaa
afdlox
area forecast discussion... Updated
national weather service los angeles/oxnard ca
516 pm pdt Thu apr 27 2017

Update for new aviation discussion...

Synopsis
A high pressure system with offshore flow will bring fair skies,
gusty winds at times and above normal temperatures into next week.

The weekend will have the warmest temperatures.

Short term (tdy-sun)
gusty north to northwest flow pattern continues and we'll be
getting another surge tonight into Friday morning as a reinforcing
shot of upper level energy drops into the great basin. This could
be the strongest of the bunch this week (at least for la county) as
models show solid 40-50 kt around 850mb and strong subsidence to
drive the stronger winds aloft down to the surface. So warnings
look good for the grapevine area tonight and some of that will
filter down into the valleys and possibly even down into the la
coast as well.

Not too much change in temps Friday, but Saturday as we transition
to a solid advisory level santa ana event temps will definitely
jump several degrees, especially coast/valleys.

The santa ana is a one off event this time as Sunday we turn back
onshore and highs drop 4-8 degrees for coast/valleys (though
similar or slightly warmer farther inland).

Long term (mon-thu)
fairly quiet week next week as the ridge eventually moves squarely
over the west coast and dominates the pattern. Pretty standard
onshore flow each day so while above normal temps will continue
highs should mostly top out in the 70s for the coast and 80s for
the valleys. 90s likely reserved for the extreme inland areas like
the antelope valley and interior slo county. This pattern is
definitely favorable for a marine lyr return at some point next
week, but exactly when is hard to say. When it does it will be
confined to the coast and likely include areas of dense fog as the
inversion will be very strong but also very shallow.

Aviation 28/0010z
at 2317z, the inversion at klax was 400 ft deep. The top of the
inversion was at 1000 ft with a temperature of 24 deg c.

Hi confidence in the 00z tafs withVFR conditions expected at all
the airfields thru Fri afternoon. Gusty NW to N winds will affect
many of the airfields for much of the TAF period. There will be an
extended period of low level wind shear at ksba from 02z-14z due to
the gusty N canyon winds in the vicinity. Winds gusting to near 40
kt at kpmd and kwjf thru early this evening will bring a 10-20
percent chance of MVFR/ifr vsbys at times in blowing dust. At
klax... N winds gusting to 25 kt is expected later tonight into early
fri morning.

Klax... Hi confidence in the 00z TAF withVFR conditions expected
thru Fri evening. N winds gusting to 25 kt is expected from 08z-14z,
with a 20 percent chance of gusts to 30 to 35 kt as well.

Kbur... Hi confidence in the 00z TAF withVFR conditions expected
thru Fri afternoon. Gusty N winds will prevail at the airfield at
times, peaking tonight with gusts up to 25 kt, and there is a 20-30
percent chance of gusts 30 to 35 kt at times.

Marine 27/200 pm.

For the outer waters, high confidence in current forecast. Gale
force winds will continue through Friday night then subside to
small craft advisory (sca) levels Saturday through Monday.

For the inner waters, moderate to high confidence in current
forecast. For the waters north of point sal, SCA level winds will
continue through Friday night before subsiding on Saturday.

However for Sunday and Monday, there is a 60% chance of winds
increasing to SCA levels again. For the waters south of point
conception, SCA level west to northwest winds will continue
through Friday night. From Saturday through Monday, winds are
generally expected to remain below SCA levels. However, there is a
50% chance of SCA level northeast winds Saturday from ventura
south to santa monica.

Due to strong winds throughout the waters, seas will be very
choppy in all areas this week, making for hazardous boating
conditions through the week.

Lox watches/warnings/advisories
Ca... Wind advisory in effect until 9 pm pdt this evening for zones
34-35. (see laxnpwlox).

Wind advisory in effect until 9 am pdt Friday for zones
39-44>46-52-59-547. (see laxnpwlox).

Beach hazards statement in effect through Friday evening for
zones 40-41. (see laxcfwlox).

High wind warning in effect until 9 am pdt Friday for zones
53-54. (see laxnpwlox).

Wind advisory in effect until 3 pm pdt Friday for zone 88. (see laxnpwlox).

Pz... Small craft advisory in effect until 3 am pdt Saturday for
zones 645-650-655. (see laxmwwlox).

Gale warning in effect until 3 am pdt Saturday for zones
670-673-676. (see laxmwwlox).

Hazard potential outlook (sun-thu)
no significant hazards expected.

Public... Mw
aviation... Sirard
marine... Sweet
synopsis... Stu
weather.Gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PSLC1 - 9412110 - Port San Luis, CA 1 mi43 min NW 21 G 29 68°F 50°F1012.6 hPa
46215 - Diablo Canyon, CA (076) 7 mi41 min 51°F9 ft
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 21 mi101 min NNW 27 G 33 56°F 55°F11 ft1013.3 hPa (-1.1)
PTGC1 - Point Arguello, CA 41 mi91 min N 17 G 20 55°F 1013.5 hPa (-0.9)
HRVC1 49 mi49 min 1013.4 hPa

Wind History for Port San Luis, CA
(wind in knots)    EDIT      (on/off)   Help
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N5
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N4
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G27
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G33
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SE2
G7
NE4
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N3
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N2
G5
SE4
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W12
E1
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G9
W16
G22
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W13
G18
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G24
NW15
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2 days
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N9
G17
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G11
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G9
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NW2
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G12
SE2
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G20
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G20
NW13
G25
NW18
G30
NW15
G25
NW17
G35
W10
G27
NW20
G30

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Luis Obispo, San Luis Obispo County-Mc Chesney Field, CA7 mi35 minNW 15 G 2310.00 miFair59°F45°F60%1012.6 hPa
Santa Maria, Santa Maria Public Airport, CA24 mi40 minNW 17 G 267.00 miFair57°F44°F62%1012.7 hPa

Wind History from SBP (wind in knots)
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Last 24hrNW12NW11NW11NW11NW10NW13NW10NW8NW7NW14NW10NW10NW12NW16
G20
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NW9NW14NW15
G23
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NW20NW20
G29
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1 day agoNW14NW8NW10NW8NW8NW8NW94W6SW105NW10NW10NW11NW12NW9NW15NW17
G24
NW20NW22
G30
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NW18NW13NW13
2 days agoNW14
G23
--NW13NW10NW13NW11NW11NW10NW7N4W3N9
G17
NW12NW11N8NW14NW18NW18NW19
G25
NW18
G26
NW22
G28
NW20
G25
NW14NW16

Tide / Current Tables for Avila, California
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Avila
Click for Map
Thu -- 05:18 AM PDT     -3.27 feet Low Tide
Thu -- 06:15 AM PDT     Sunrise
Thu -- 07:28 AM PDT     Moonrise
Thu -- 11:35 AM PDT     1.71 feet High Tide
Thu -- 05:01 PM PDT     -1.43 feet Low Tide
Thu -- 07:45 PM PDT     Sunset
Thu -- 09:24 PM PDT     Moonset
Thu -- 11:08 PM PDT     3.17 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.41.2-0.2-1.7-2.7-3.2-3.1-2.4-1.2011.61.71.20.4-0.5-1.2-1.4-1.2-0.40.71.82.83.2

Tide / Current Tables for Morro Bay, California
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Morro Bay
Click for Map
Thu -- 06:15 AM PDT     Sunrise
Thu -- 06:38 AM PDT     -0.15 feet Low Tide
Thu -- 07:28 AM PDT     Moonrise
Thu -- 12:37 PM PDT     3.34 feet High Tide
Thu -- 05:51 PM PDT     1.50 feet Low Tide
Thu -- 07:46 PM PDT     Sunset
Thu -- 09:25 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.94.33.42.31.30.4-0.1-0.10.31.122.83.33.332.521.61.51.72.33.24.14.8

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of Southwest    EDIT
Geos

Wind Forecast for Los Angeles/Oxnard, CA (22,6,7,8)
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Ground Weather Radar Station Vandenberg AFB, CA
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weather_mapweather_map weather_map

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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.