Saturday, March25, 2017 L-36.com


Marine Weather and Tides
Oceano, 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 6:55AMSunset 7:20PM Saturday March 25, 2017 4:39 PM PDT (23:39 UTC) Moonrise 4:35AMMoonset 4:00PM Illumination 3% Phase: Waning Crescent; Moon at 28 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- 215 Pm Pdt Sat Mar 25 2017
Tonight..NW winds 15 to 20 kt with local gusts to 25 kt in the evening...becoming 10 to 15 kt. Wind waves 2 to 4 ft. W swell 7 to 9 ft at 14 seconds.
Sun..NW winds 10 to 15 kt. Wind waves 1 to 3 ft. W swell 6 to 8 ft at 13 seconds.
Sun night..NW winds 15 to 20 kt with local gusts to 25 kt in the evening...becoming 10 to 15 kt. Wind waves 2 to 4 ft. W swell 5 to 7 ft at 12 seconds. Slight chance of showers after midnight.
Mon..NW winds 10 to 20 kt with local gusts to 25 kt...becoming 20 to 25 kt with local gusts to 35 kt in the afternoon. Combined seas 6 to 8 ft dominant period 10 seconds.
Mon night..NW winds 15 to 25 kt with gusts to 35 kt. Combined seas 9 to 12 ft dominant period 9 seconds.
Tue..N winds 10 to 15 kt with gusts to 20 kt...becoming nw 10 to 20 kt with gusts to 25 kt in the afternoon. Wind waves 2 to 4 ft. NW swell 9 to 10 ft at 10 seconds.
Tue night..NW winds 15 to 20 kt with gusts to 25 kt in the evening...becoming N 10 to 15 kt. Wind waves 2 to 4 ft. W swell 8 to 9 ft.
Wed..NW winds 15 to 20 kt with gusts to 25 kt. Combined seas 6 to 8 ft.
Thu..NW winds 15 to 25 kt with gusts to 35 kt. Combined seas 7 to 10 ft.
PZZ600 215 Pm Pdt Sat Mar 25 2017
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 21z...or 2 pm pst...a 1025 mb high was 800 nm W of point conception. Widespread gale force winds are possible Sun through Wed. A short period swell will impact the coastal waters through early next week.

7 Day Forecast for Marine Location Near Oceano, CA
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location: 35.11, -120.61     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 252142
afdlox
area forecast discussion
national weather service los angeles/oxnard ca
242 pm pdt Sat mar 25 2017

Synopsis
The upper trough will exit today with some lingering mountain
showers. Sunday will warm a few degrees. Then a weak trough on
Monday may bring a few light showers over san luis obispo and
santa barbara counties. Gusty northerly winds will set up Monday
night and persist into Tuesday. Weak ridging aloft will bring
warm and dry conditions for the middle of next week.

Short term (tdy-tue)
partly to mostly cloudy skies for the most part covered the forecast
area early this afternoon thanks to residual moisture behind a
departing upper level trof and increasingly strong spring sunshine.

Widely scattered showers developed over parts of slo county and
moved into northern sba county. These showers will likely persist
thru sunset. Additional showers are expected to develop on the N mtn
slopes of vtu/l.A. Counties as well thru the afternoon.

Weak upper ridging can be expected to move over SRN ca tonight and
sun. A fast-moving upper level trof will move thru the E pac and
into ca Sun night, followed by an inside slider quickly moving thru
ca on mon. This trof will deepen into an upper level low over az and
move off to the SE Mon night thru tue, while upper level ridging
builds along and off the ca coast. This pattern will result in a
strong northerly flow aloft over SRN ca for Mon into tue.

The north mtn slopes should have persistent upslope clouds with a
few rain and snow showers tonight. Otherwise, partly to mostly
cloudy skies will prevail as low level moisture is expected to
persist. Lingering low level moisture combined with mid and hi level
moisture moving in from the W on Sun will keep partly to mostly
cloudy skies over the forecast area thru the day. The upper trof
will bring additional clouds and a slight chance of showers over
slo/sba counties Sun night into Mon morning. As the inside slider
moves inland on mon, a slight chance of rain and snow showers can be
expected mainly on the N mtn slopes to the cuyama vly. Otherwise,
partly cloudy skies overall should prevail across much of the
forecast area thru the day. A tightening northerly pressure gradient
and some cold air advection Mon afternoon will help to bring strong
and gusty NW winds to the mtns and antelope vly, as well as gusty nw
winds to the central coast.

Northerly gradients and cold air advection will increase further mon
evening, with strong and gusty N winds expected to affect the
antelope vly, mtns and sba county S coast. 850 mb winds up to 55 kt
was forecast by the 12z NAM over these areas, with 950 mb winds up
to 30 kt. There is the potential for winds to approach or reach
warning thresholds in these areas Mon night, and high wind watches
may eventually be needed for this event. Gusty N winds to advisory
levels will also be possible for the santa monica mtns, portions of
the vtu county vlys, the santa clarita vly, san fernando vly, and
possibly even the l.A. County coast from malibu to the hollywood
hills, with the potential for gusty N winds to affect areas from
santa monica to lax. Wind advisories will likely be needed for these
areas from mid afternoon Mon thru Mon night.

Winds will decrease Tue morning and turn onshore Tue afternoon.

Except for a few clouds and showers lingering on the N mtn slopes
mon night, skies will become mostly clear across the forecast area
mon night thru tue.

Temps Sun and Mon are forecast to be several degrees below normal
for many areas. Highs in the warmest vlys and inland coastal areas
should reach the upper 60s to low 70s both days, altho the antelope
vly will turn much cooler on Mon with highs 4 to 8 deg below normal.

With increased sunshine, a building ridge and offshore flow on tue,
temps will warm significantly to several degrees above normal for
many areas. Highs in the warmest vlys and inland coastal areas on
tue should reach the mid 70s to low 80s.

Long term (wed-sat)
the ec and GFS are in generally good agreement with the synoptic
scale features on wed, then some significant differences show up thu
thru Sat relating to the movement and an inside slider upper low.

Both models have an upper ridge over the area on wed. For thu, a
sharp upper trof moves into the pac NW and pushes inland thru oregon
as per the gfs, or dives S and deepens into an upper low over NRN ca
as per the ec. The GFS deepens the trof into an upper low over the
great basin on Fri then drifts the upper low into new mexico for
sat. The ec tracks the upper low into SRN nevada Fri and into
central az for sat. At the same time, both models build an upper
level ridge along or off the ca coast.

The ec is the colder and wetter solution due to the proximity of the
upper low to SRN ca , as the model brings showers to the forecast
area Thu and Thu night. The GFS more easterly solution to the track
of the upper low keeps the forecast area drier and warmer with
offshore flow for the most part. This forecast package has leaned
more toward the GFS solution, with mostly clear skies and generally
warm conditions over swrn ca Wed thru sat, as the GFS has shown a
bit better run to run consistency over the last couple of days. The
offshore flow may also be gusty at times in the favored areas during
the period.

Temps are forecast to be about 4 to 12 deg above normal each day,
except near normal to a few degrees above normal on fri. Highs in
the warmest vlys and inland coastal areas should reach the lower to
mid 80s wed, mid 70s to low 80s thu, mid 70s to around 80 fri, and
80s on sat.

Aviation 25/1730z...

at 1715z, there was a weak marine inversion at klax, based at
1500 feet. The top of the inversion was 2000 feet with a
temperature of 11 degrees celsius.

Overall, low to moderate confidence in 18z TAF package. Current
MVFR/ifr CIGS are expected to dissipate around 20-21z withVFR
conditions anticipated through this evening. For tonight, low
confidence in coastal/valley TAF sites. Currently will indicate
some MVFR vsbys developing after 10z, but there is a 50% chance
that conditions could remainVFR or that MVFR CIGS could develop.

There is also a 10% chance that ifr/lifr conditions could
develop.

Klax... Overall moderate confidence in 18z taf. High confidence in
MVFR CIGS dissipating after 20z. For tonight, low confidence in
forecast as there is an equal chance of MVFR orVFR conditions
prevailing (and even a 10% chance of ifr/lifr conditions
developing).

Kbur... Overall moderate confidence in 18z taf. Moderate confidence
in MVFR CIGS 19z-21z andVFR conditions 21z-06z. For tonight, low
confidence in forecast as there is an equal chance of MVFR orVFR
conditions prevailing (and even a 10% chance of ifr/lifr
conditions developing).

Marine 25/115 pm...

for the outer waters, moderate confidence in current forecast.

High confidence in small craft advisory (sca) level winds through
Sunday morning. For Sunday afternoon/night, northwest winds are
expected to increase, but only low to moderate confidence in winds
reaching gale force levels. Strong northwest winds will continue
Monday through Thursday with SCA level conditions likely and a
chance of winds reaching gale force levels.

For the inner waters, moderate confidence in current forecast. For
the waters north of point sal, there is a 30% chance of winds
reaching SCA levels this afternoon/evening and again Sunday
afternoon/evening. From Monday through Thursday, there is a high
likelihood of winds reaching SCA levels. For the waters south of
point conception, moderate confidence in SCA level winds across
the western santa barbara channel this afternoon/evening. On
Sunday, there is a chance (30%) of SCA level winds across western
portions. However for Monday through Thursday, winds will increase
and there is a good chance (50%) of SCA level winds across the
entire southern waters.

Lox watches/warnings/advisories
Ca... None.

Pz... Small craft advisory in effect until 9 pm pdt this evening
for zone 650. (see laxmwwlox).

Small craft advisory in effect until 3 pm pdt Sunday for
zones 670-673-676. (see laxmwwlox).

Gale watch in effect from Sunday afternoon through late
Sunday night for zones 673-676. (see laxmwwlox).

Hazard potential outlook (tue-sat)
strong and gusty north winds will affect the area Monday night
into early Tuesday, with the potential for damaging wind gusts
especially in the mountains. Travel will be impacted by the winds
over a large area.

Another round of strong and gusty northwest to north winds will
be possible Thu night in the mountains and along the santa barbara
county south coast, with travel being affected by the winds.

Public... Sirard
aviation... Rat
marine... Rat
synopsis... B
weather.Gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CPXC1 8 mi37 min NW 9.9 G 11 61°F 1019.6 hPa50°F
PSLC1 - 9412110 - Port San Luis, CA 9 mi51 min W 13 G 23 61°F 56°F1019.9 hPa
46215 - Diablo Canyon, CA (076) 15 mi49 min 59°F6 ft
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 24 mi49 min NW 19 G 21 56°F 57°F7 ft1020 hPa (-1.3)
PTGC1 - Point Arguello, CA 37 mi39 min NNW 22 G 24 56°F 1019.6 hPa (-1.4)
HRVC1 44 mi51 min 1019.9 hPa
46218 - Harvest, CA (071) 46 mi39 min 57°F8 ft
46257 47 mi39 min 57°F8 ft

Wind History for Port San Luis, CA
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NW13
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Luis Obispo, San Luis Obispo County-Mc Chesney Field, CA9 mi43 minNW 1510.00 miMostly Cloudy64°F54°F70%1018.8 hPa
Santa Maria, Santa Maria Public Airport, CA16 mi48 minWNW 1710.00 miMostly Cloudy62°F55°F78%1019.2 hPa

Wind History from SBP (wind in knots)
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Last 24hrNW10NW3W4S3SE9W3E3E5SE5CalmSE5CalmW4NW8W5NW5NW8--NW6NW10NW14
G18
NW13NW14NW15
1 day agoNW21
G26
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NW11NW12NW11NW7NW8CalmCalmSE3SE3CalmE3CalmE4CalmCalmCalmCalmS7NW9SW6SW63
2 days agoNW17
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NW9NW14
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NW12N9N4NW5W4NW6CalmW3CalmCalm3CalmN6N12
G18
NW15N7N9
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NW17NW13NW18
G22

Tide / Current Tables for Avila, California
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Avila
Click for Map
Sat -- 02:23 AM PDT     -0.94 feet Low Tide
Sat -- 05:35 AM PDT     Moonrise
Sat -- 06:59 AM PDT     Sunrise
Sat -- 08:21 AM PDT     2.22 feet High Tide
Sat -- 03:07 PM PDT     -2.53 feet Low Tide
Sat -- 05:00 PM PDT     Moonset
Sat -- 07:19 PM PDT     Sunset
Sat -- 09:26 PM PDT     1.58 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.1-0.6-0.9-0.9-0.50.31.11.82.22.11.60.7-0.4-1.5-2.2-2.5-2.3-1.7-0.70.31.11.51.51

Tide / Current Tables for Port San Luis, Pacific Ocean, California
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Port San Luis
Click for Map
Sat -- 02:45 AM PDT     1.51 feet Low Tide
Sat -- 05:35 AM PDT     Moonrise
Sat -- 06:59 AM PDT     Sunrise
Sat -- 08:43 AM PDT     5.06 feet High Tide
Sat -- 03:23 PM PDT     -0.28 feet Low Tide
Sat -- 05:00 PM PDT     Moonset
Sat -- 07:19 PM PDT     Sunset
Sat -- 09:45 PM PDT     4.47 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.92.11.61.51.92.63.54.34.954.63.72.51.30.3-0.2-0.20.41.52.63.74.34.54.1

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 (19,4,5,8)
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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.