Monday, April23, 2018 L-36.com


Marine Weather and Tides
Los Osos, CA

Version 3.4
What's New / NOTES
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.
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.

Sunrise 6:17AMSunset 7:43PM Monday April 23, 2018 8:02 PM PDT (03:02 UTC) Moonrise 12:22PMMoonset 1:38AM Illumination 63% 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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PZZ670 Point Piedras Blancas To Point Sal From 10 To 60 Nm- 215 Pm Pdt Mon Apr 23 2018
Tonight..NW winds 10 to 15 kt. Wind waves 2 ft or less. NW swell 5 to 6 ft at 12 seconds. Areas of fog dense fog with vsby 1 nm or less.
Tue..NW winds 10 to 15 kt. Wind waves 2 ft or less. NW swell 4 to 5 ft at 12 seconds. Areas of fog dense fog with vsby 1 nm or less.
Tue night..NW winds 10 to 15 kt, becoming 5 to 10 kt after midnight. Wind waves 2 ft or less. NW swell 5 to 6 ft at 14 seconds. Patchy fog after midnight.
Wed..W winds 5 to 10 kt. Wind waves 2 ft or less. NW swell 5 to 6 ft at 15 seconds. Patchy fog in the morning.
Wed night..SW winds 5 to 10 kt, becoming nw after midnight. Wind waves 2 ft or less. NW swell 5 to 6 ft at 14 seconds.
Thu..NW winds 5 to 10 kt, becoming 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell nw 5 ft at 13 seconds and S 3 ft at 15 seconds.
Thu night..NW winds 15 to 20 kt, becoming 10 to 15 kt after midnight. Wind waves 2 to 3 ft. Mixed swell nw 5 ft at 12 seconds and S 3 ft at 15 seconds.
Fri..NW winds 15 to 25 kt. Combined seas 6 to 8 ft.
Sat..NW winds 15 to 25 kt with gusts to 30 kt. Combined seas 7 to 9 ft.
PZZ600 215 Pm Pdt Mon Apr 23 2018
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 1024 mb surface high was 800 nm west of point conception while a 1012 mb thermal low was over southwest arizona. This pattern will change little through the middle of the week. Dense fog will remain an issue, through at least tonight.

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 232357
afdlox
area forecast discussion... Updated
national weather service los angeles oxnard ca
457 pm pdt Mon apr 23 2018

Synopsis 23 1159 am.

A weak high pressure ridge, moderate onshore flow, and overnight
through morning coastal low clouds and fog are expected for the
week. As a weak low pressure system approaches the area later in
the week, temperatures will cool a few degrees through Saturday.

Short term (tdy-thu) 23 112 pm.

Quiet weather pattern next several days with a solid, though
relatively shallow marine layer and moderate onshore flow. Don't
really see any mechanisms to alter the low cloud coverage or depth
significantly at least through mid week or so. Temps also will be
more or less the same as today with just minor day to day
fluctuations based on stratus clearing time and onshore strength.

Clouds will likely linger at some beaches through the afternoon,
much like they did today north and west of malibu.

By Thu the upper low that will have been only slowly moving
towards the coast earlier in the week will finally start to lift
out to the northeast. As it does it will shove the weak upper
ridge currently over us to the east and result in more cyclonic
flow aloft and likely a deepening of the marine layer. So the
trends for Thu should be cooler with slower clearing and stronger
onshore flow.

Long term (fri-mon) 23 120 pm.

There could be a little increase in northerly flow early Friday as
the first little trough passes through but overall probably little
change going into Friday with the marine layer coverage and temps.

There are differences in the handling of the upper pattern over
the weekend and into early next week but either way we should be
looking at a deeper marine layer and temps dropping below normal
as heights drop quite a bit, though very little chance of any
precip aside from possibly some morning drizzle, especially
Sunday Monday. Both those days could have pretty slow clearing,
even inland.

Aviation 23 2354z.

At 23z, the marine layer depth was near 800 feet deep at klax.

The top of the inversion was near 2000 feet with a temperature
around 21 degrees celsius.

Moderate confidence in the current forecast. At coastal terminals,
conditions will deteriorate to the lifr to ifr category through
06z. Vlifr conditions are likely at central coast terminals
through 14z or 15z. Otherwise, conditions will gradually lift one
category between 06z and 14z. MVFR conditions could linger at
coastal terminals into Tuesday afternoon, especially ksba and
koxr.

Klax...VFR conditions will deteriorate to lifr between 02z and
04z. There is a 30 percent chance of vlifr conditions between 03z
and 08z. MVFR conditions should develop between 11z and 15z and
there is a 30 percent chance that MVFR conditions could linger
until as late as 20z and a 20 percent chance that MVFR conditions
could linger throughout Tuesday afternoon.

Kbur...VFR conditions are expected throughout the period, except
for a 10 percent chance of MVFR visibility between 13z and 15z.

Marine 23 122 pm.

Widespread fog with visibilities of one mile or less will likely
persist through Tuesday morning, and possibly reform at night and
continue through Thursday. The afternoon and evening hours should
be slightly improved, but areas of reduced visibilities will
linger.

High confidence in winds and seas remaining below small craft
advisory (sca) strength everywhere through Wednesday. Winds will
be increasing Thursday through Saturday with widespread sca
conditions and building short period seas likely.

Lox watches warnings advisories
Ca... None.

Pz... None.

Hazard potential outlook (thu-mon)
No significant hazards expected.

Public... Mw
aviation... Hall
marine... Kittell boldt
synopsis... B
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46215 - Diablo Canyon, CA (076) 9 mi65 min 59°F5 ft
PSLC1 - 9412110 - Port San Luis, CA 12 mi44 min W 2.9 G 4.1 54°F 54°F1016.5 hPa
CPXC1 12 mi34 min ENE 1.9 G 2.9 54°F 1016.5 hPa51°F
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 28 mi72 min NW 12 G 16 53°F 56°F7 ft1015.8 hPa (-0.6)

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 mi66 minNW 108.00 miFair56°F51°F84%1015.5 hPa

Wind History from SBP (wind in knots)
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Last 24hrNW6CalmSE4CalmW4NW4NW4N3CalmCalmCalmE4SE4CalmCalmE6SE53SW6W8NW10NW9NW9NW10
1 day agoW5CalmNW3CalmCalmSE4CalmCalmSE3CalmCalmCalmCalmCalmNW5NW6NW9NW11NW14NW19NW13NW9NW14W7
2 days agoNW12NW10NW5NW4NW4CalmCalmSW4E5SE3CalmCalmCalmN3CalmNW7NW6W6NW14NW12NW13NW15NW13NW7

Tide / Current Tables for Morro Bay, California
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Morro Bay
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Mon -- 02:37 AM PDT     Moonset
Mon -- 05:18 AM PDT     4.23 feet High Tide
Mon -- 06:20 AM PDT     Sunrise
Mon -- 01:01 PM PDT     -0.02 feet Low Tide
Mon -- 01:22 PM PDT     Moonrise
Mon -- 07:43 PM PDT     Sunset
Mon -- 07:47 PM PDT     3.39 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.42.633.544.24.13.73.12.31.50.80.2-00.20.81.52.333.33.43.332.6

Tide / Current Tables for Port San Luis, Pacific Ocean, California
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Port San Luis
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Mon -- 02:36 AM PDT     Moonset
Mon -- 04:36 AM PDT     4.59 feet High Tide
Mon -- 06:20 AM PDT     Sunrise
Mon -- 12:01 PM PDT     -0.49 feet Low Tide
Mon -- 01:22 PM PDT     Moonrise
Mon -- 07:04 PM PDT     4.09 feet High Tide
Mon -- 07:42 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.73.13.74.24.54.64.23.52.51.40.4-0.2-0.5-0.30.41.32.43.23.94.13.93.52.92.5

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 (23,6,7,8)
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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.