Monday, June18, 2018 L-36.com


Marine Weather and Tides
Los Osos, CA

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:46AMSunset 8:21PM Monday June 18, 2018 9:55 AM PDT (16:55 UTC) Moonrise 10:16AMMoonset 11:44PM Illumination 27% Phase: Waxing Crescent; Moon at 5 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- 904 Am Pdt Mon Jun 18 2018
.small craft advisory in effect from 2 pm pdt this afternoon through late tonight...
Today..NW winds 5 to 10 kt, becoming 10 to 20 kt with gusts to 25 kt in the afternoon. Wind waves 1 to 3 ft. Mixed swell nw 4 to 5 ft at 9 seconds and S 3 ft at 15 seconds.
Tonight..NW winds 10 to 20 kt with gusts to 25 kt. Combined seas 5 to 7 ft dominant period 13 seconds.
Tue..NW winds 10 to 15 kt, becoming 15 to 20 kt with gusts to 25 kt in the afternoon. Strongest western portion. Wind waves 2 to 4 ft. Mixed swell nw 4 to 5 ft at 12 seconds and S 3 ft at 14 seconds.
Tue night..NW winds 20 to 30 kt. Combined seas 7 to 8 ft dominant period 12 seconds.
Wed..NW winds 15 to 20 kt with gusts to 25 kt. Combined seas 7 to 8 ft dominant period 11 seconds.
Wed night..NW winds 20 to 30 kt. Combined seas 6 to 7 ft dominant period 10 seconds.
Thu..NW winds 15 to 25 kt with gusts to 30 kt. Combined seas 6 to 8 ft.
Fri..NW winds 15 to 25 kt. Combined seas 6 to 8 ft.
PZZ600 904 Am Pdt Mon Jun 18 2018
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 16z...or 9 am pdt...a 1024 mb high pressure center was located 600 nm west of portland and a 1008 mb low pressure center was located in utah.

7 Day Forecast for Marine Location Near Los Osos, CA
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location: 35.33, -120.84     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 181648
afdlox
area forecast discussion
national weather service los angeles oxnard ca
948 am pdt Mon jun 18 2018

Synopsis 18 740 am.

A high pressure will build over the region by mid week. Warmer
temperatures are expected mainly away from the coast. Night to
morning low clouds will stick around coastal areas at this time
and fair skies elsewhere.

Short term (tdy-wed) 18 948 am.

Marine layer depth getting close to 5000' this morning but strong
offshore trends have cleared out the clouds for all areas except
eastern la county. Expecting a warmer day in all areas and current
obs certainly supporting that with 24 trends up 3-6 degrees on
average and some foothill mtn areas trending up double digits due
to the sunny start to the day.

***from previous discussion***
the sba to smx grad GOES offshore tonight as high pressure pushes
into the east pac. This will produce a sundowner which will
mostly affect the western portion of the sba south coast. There
will be a few advisory level gusts but for the most part this
event will be just below advisory levels. The marine layer will
reform but will be lower and low clouds will mostly affect the
coastal areas (but not southern sba county due to the north winds).

High pressure begins to nose in from the SW on Tuesday and hgts
climb to 591 dm. Offshore trends will continue. MAX temps will
shoot up 6 to 12 degrees and will reach normals at the coasts and
above normal inland.

Stronger high pressure presses into the north Tuesday night. There
will be an advisory level sundowner and the winds will also affect
the city of sba a little more although the strongest gusts will
still be to the west. Low clouds will remain confined to the coast
trapped under a strengthening and lowering inversion.

The high moves over the mexico ca border Wednesday and hgts climb
further to 594 dm. The marine layer will preclude much additional
warming at the coasts but inland will see another 3 to 6 degrees
of warming and MAX temps in the vlys will be 6 to 9 degrees above
normal.

Long term (thu-sun) 18 323 am.

The GFS and the ec agree that the large high pressure system will
sit atop SRN ca during the Thu Fri time period. It looks like the
wed to Fri days will be very similar to each other.

At the surface, the onshore gradient winds and coastal eddy will
continue. There will be a shallow marine layer across the coasts
each night through morning. The capping inversion will be very
strong and it might make it tough for the low clouds to clear at
the beaches. There will be huge difference in afternoon maximum
temperatures: beach temps will be near normal... Valley temps will
be 5 to 10 degrees above normal, and inland temps will 8 to 12
degrees above normal. The overnight minimum temperatures will also
rise to above normal and there will likely be a small zone at the
top of the inversion where minimum temperatures could be substantially
above normal. Due to a combination of very warm lows and highs there
could be some heat advisories on Thursday and or Friday.

A trof moving out of the pac NW will knock the ridge down. Hgts
fall but not much only to 591 dm. So inland temps will cool a few
degrees but will remain well above normal. Both the ec and gfs
agree that there could be a large eddy which will produce a very
large southerly surge up the central coast. If this comes true
there will be more marine stratus and cooler coastal temps. Not
quite buying to this whole hog yet but will have to keep an eye on
it.

Aviation 18 1135z.

At 0815z at klax... The marine layer was 4000 feet deep. The top
of the inversion was at 4900 feet with a temperature of 12 c.

Moderate confidence in tafs for coastal and valley terminals
through 00z. There is a chance of MVFR CIGS vsbys at coastal and
valley terminals south of ksba including klax and kbur thru 20z.

Low clouds expected scatter out within two hours of taf. Low
confidence after 00z due to uncertainty in timing and flight
category for coastal terminals (except high confidence in ksba).

Weak llws possible for ksba between 00z and 06z.

High confidence otherwise and elsewhere.

Klax... Moderate confidence in TAF thru 00z followed by low
confidence due to uncertainty in timing and flight category of
low CIGS vsbys. There is a chance of MVFR CIGS vsbys thru 20z.

Kbur... Moderate confidence thru 00z followed by generally high
confidence. There is a chance of MVFR CIGS vsbys thru 19z. There
is a 20 percent of ifr CIGS vsbys as early as 09z.

Marine 18 913 am.

Low end SCA conds likely beginning late this afternoon or early
evening for the outer waters as well as the inner waters adjacent
to the central coast. SCA conds will become more likely and a bit
stronger for the same areas late Tuesday through Thursday or
Friday. In fact there is a 30 percent of gale winds at some point
during this period. Local SCA winds are also likely at times for
western portions of the E santa barbara channel during this time.

A moderate eddy with winds gusting locally up to 15-20 knots is
possible for the inner waters south of point conception each
morning beginning Tuesday.

Lox watches warnings advisories
Ca... None.

Pz... Small craft advisory in effect from 2 pm this afternoon to 9
pm pdt this evening for zone 645. (see laxmwwlox).

Small craft advisory in effect from 2 pm this afternoon to 3
am pdt Tuesday for zones 670-673-676. (see laxmwwlox).

Hazard potential outlook (wed-sun)
No significant hazards expected.

Public... Mw rorke
aviation... Munroe
marine... Sweet
synopsis... Delerme
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46215 - Diablo Canyon, CA (076) 9 mi29 min 56°F4 ft
PSLC1 - 9412110 - Port San Luis, CA 12 mi38 min NE 1.9 G 2.9 57°F1017.8 hPa
CPXC1 12 mi24 min E 2.9 G 4.1 57°F 1017.9 hPa51°F
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 28 mi66 min NW 7.8 G 9.7 56°F 56°F5 ft1017.7 hPa (+1.5)

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, CA12 mi60 minNW 1310.00 miFair64°F50°F60%1016.7 hPa

Wind History from SBP (wind in knots)
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Last 24hrS8NW3CalmW85SW9SW10SW9NW10NW12NW10NW8NW5W5CalmCalmSE3CalmSE4SE3SE4CalmCalmNW13
1 day agoS6S7SW7SW54SW8S9SW8SW6S6S5S6S5S5S5S3SE3S4CalmCalmSW3S3Calm4
2 days agoE3CalmE44--NW10NW15NW13NW15NW15NW13NW9NW8NW8NW7NW3W3W4S4S4S3S3SW3SE5

Tide / Current Tables for Morro Bay, California
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Morro Bay
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Mon -- 12:04 AM PDT     Moonset
Mon -- 02:24 AM PDT     4.59 feet High Tide
Mon -- 05:48 AM PDT     Sunrise
Mon -- 09:58 AM PDT     -0.27 feet Low Tide
Mon -- 11:16 AM PDT     Moonrise
Mon -- 04:36 PM PDT     3.57 feet High Tide
Mon -- 08:21 PM PDT     Sunset
Mon -- 10:08 PM PDT     2.15 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.74.24.64.543.22.21.30.5-0.1-0.3-00.61.52.43.13.53.53.332.62.32.22.3

Tide / Current Tables for Port San Luis, Pacific Ocean, California
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Port San Luis
Click for Map
Mon -- 12:03 AM PDT     Moonset
Mon -- 01:35 AM PDT     5.36 feet High Tide
Mon -- 05:48 AM PDT     Sunrise
Mon -- 08:54 AM PDT     -0.84 feet Low Tide
Mon -- 11:15 AM PDT     Moonrise
Mon -- 03:57 PM PDT     4.43 feet High Tide
Mon -- 08:20 PM PDT     Sunset
Mon -- 09:11 PM PDT     2.42 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.85.35.34.83.92.71.30.2-0.6-0.8-0.50.31.42.63.64.24.44.23.73.12.72.42.52.9

Weather Map and Satellite Images
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wmap_P
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 (12,3,4,5)
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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.