Wednesday, June28, 2017 L-36.com


Marine Weather and Tides
Los Osos, CA

Version 3.4
What's New / NOTES
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.
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.

Sunrise 5:49AMSunset 8:22PM Wednesday June 28, 2017 10:37 AM PDT (17:37 UTC) Moonrise 9:57AMMoonset 11:08PM Illumination 22% 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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PZZ645 Point Piedras Blancas To Point Sal Westward Out To 10 Nm- 851 Am Pdt Wed Jun 28 2017
.small craft advisory in effect from 3 pm pdt this afternoon through this evening...
Today..Variable 10 kt or less...becoming 15 to 25 kt in the afternoon. Combined seas 4 to 6 ft dominant period 7 seconds. Patchy fog in the morning.
Tonight..NW winds 15 to 25 kt in the evening...becoming 10 to 20 kt. Combined seas 4 to 6 ft dominant period 8 seconds. Patchy fog after midnight.
Thu..NW winds 5 to 15 kt...becoming 15 to 20 kt with gusts to 25 kt in the afternoon. Combined seas 4 to 6 ft dominant period 8 seconds. Patchy fog in the morning.
Thu night..NW winds 15 to 25 kt in the evening becoming 10 to 20 kt. Combined seas 5 to 7 ft dominant period 8 seconds. Patchy fog after midnight.
Fri..NW winds 5 to 15 kt...becoming 15 to 25 kt with local gusts to 30 kt in the afternoon. Combined seas 5 to 7 ft dominant period 8 seconds. Patchy fog in the morning.
Fri night..NW winds 15 to 25 kt with gusts to 30 kt in the evening...becoming 10 to 15 kt. Combined seas 5 to 7 ft dominant period 9 seconds. Patchy fog after midnight.
Sat..NW winds 5 to 15 kt...becoming 15 to 20 kt with gusts to 25 kt in the afternoon. Combined seas 4 to 6 ft. Patchy fog.
Sun..W winds 5 to 10 kt. Wind waves 2 ft or less. NW swell 3 to 4 ft. Patchy fog.
PZZ600 851 Am Pdt Wed Jun 28 2017
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 15z...or 8 am pdt...a 1028 mb high was located 700 nm west of seattle washington while a 1006 mb thermal low was over southeast california. The thermal low will change little through the week while the high moves closer to the coast...but will weaken some along the way.

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 281613
afdlox
area forecast discussion
national weather service los angeles oxnard ca
913 am pdt Wed jun 28 2017

Synopsis
High pressure aloft will build into the region by Friday,
bringing a warming trend away from the coast. Some cooling is
expected away from the coast this weekend into early next week as
high pressure weakens. Night to morning low clouds and patchy will
continue for coastal areas, extending into the valleys at times.

Short term (tdy-fri)
a weak eddy spun up overnight but low cloud coverage wasn't quite
as complete as expected. In any case, all areas will be a little
cooler today. A little breezy in the antelope valley and a weak
sundowner again for southern sb county again tonight but below
advisory levels in both cases. Expecting low clouds to fill in a
little better tonight. Otherwise a pretty quiet pattern today and
the next several.

***from previous discussion***
Thursday looks pretty much like a do-over day except that there
will be better marine layer stratus coverage and the stronger
onshore flow will keep more beaches cloudy. MAX temps will be very
similar to todays save for the cloudy beaches which will be
cooler.

The ridge will roll in on Friday and hgts will rise up to 592 dm.

It will arrive along will offshore flow from the north. This will
reduce or eliminate the marine layer stratus from the vlys and
will allow for a decent warm up across the area and ESP in the
vlys.

Long term (sat-tue)
the calender may say july but the weather will say june.

Friday's ridge will be replaced by a trof and stronger onshore
flow. The GFS is more trofy with stronger onshore flow (and hence
cooler) than the ec. Favored the GFS for this forecast as it has
been a little more consistent.

There will be night through morning low clouds and fog across the
coasts and most of the vlys while the remainder of the area will
have mostly clear skies. MAX temps will fall to seasonal normals
on Saturday and then will change little through the 4th of july.

Aviation 28 1110z...

sounding marine layer information missing due to server outage.

Overall, moderate confidence in 12z TAF package. This morning
ifr lifr CIGS will continue at all coastal sites through late
morning before dissipating.VFR conditions expected for all sites
this afternoon. For tonight, marine layer should be more extensive
pushing into coastal valleys. There is high confidence in
stratus fog returning to coastal valley sites, but low confidence
in timing.

Klax... Moderate confidence in 12z taf. There is a 40% chance cigs
will remain at ifr levels this morning. Stratus may dissipate a
hour or two later than current 18z forecast. For tonight, high
confidence in return of stratus, but only moderate confidence in
flight category (50% chance CIGS could remain MVFR) and timing
(+ - 3 hours of current 06z forecast).

Kbur... Moderate confidence in 12z taf. There is a 20% chance of
ifr lifr conditions 13z-17z. For tonight, moderate confidence in
return of ifr conditions, but low confidence in timing (could be
+ - 2 hours of current 08z forecast).

Marine 28 900 am.

High confidence in small craft advisory (sca) conditions from the
central coast to san nicolas island through at least Thursday
night, with gale force winds possible by Friday night. Will likely
extend the current SCA another day with the afternoon forecast,
and may issue a gale watch for Friday. There will be lulls each
morning within 10 miles from the coast. Moderate confidence in
the santa barbara channel staying below SCA for the next few days.

Southeast winds may be locally gusty each morning in the san pedro
and santa barbara channels.

Two distinct wave types will be observable over the waters, and a
short period (6-8 second) west swell and or wind wave. The buoys
will likely highlight the long period swell at times, but the
short period swell will be most noticeable and will be highlighted
in the forecast. By later tonight, the short-period west swell
will dominate as the south swell fades.

Lox watches warnings advisories
Ca... None.

Pz... Small craft advisory in effect from 3 pm this afternoon to 9
pm pdt this evening for zone 645. (see laxmwwlox).

Small craft advisory in effect until 6 am pdt Thursday for
zones 670-673-676. (see laxmwwlox).

Hazard potential outlook (fri-tue)
no significant hazards expected.

Public... Mw rorke
aviation... Thompson
marine... Kittell
synopsis... Munroe
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46215 - Diablo Canyon, CA (076) 9 mi48 min 58°F4 ft
PSLC1 - 9412110 - Port San Luis, CA 12 mi50 min SSE 4.1 G 4.1 55°F 56°F1014.9 hPa
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 28 mi48 min NW 19 G 23 56°F 58°F6 ft1013.9 hPa (+0.4)

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 mi42 minVar 510.00 miA Few Clouds63°F53°F70%1013.5 hPa

Wind History from SBP (wind in knots)
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Last 24hrNE34NW14NW16NW16NW15NW18NW17NW16NW13NW11NW7NW7NW6NW5CalmNW6N6N3W4NW8W6S35
1 day agoNW8NW12NW17NW19NW17NW19
G22
NW16NW14NW15NW15NW11NW10NW6CalmSW3CalmCalmCalm3CalmNW5NW6W73
2 days agoW9NW14
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NW13NW13NW13NW14NW16NW15NW12NW12NW8NW6W3CalmCalmCalmCalmCalmCalmCalmCalmCalmNW6NW8

Tide / Current Tables for Morro Bay, California
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Morro Bay
Click for Map
Wed -- 02:04 AM PDT     4.46 feet High Tide
Wed -- 05:51 AM PDT     Sunrise
Wed -- 09:28 AM PDT     -0.14 feet Low Tide
Wed -- 10:57 AM PDT     Moonrise
Wed -- 04:01 PM PDT     3.62 feet High Tide
Wed -- 08:22 PM PDT     Sunset
Wed -- 09:41 PM PDT     2.03 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.74.24.54.33.72.81.910.3-0.1-0.10.41.22.12.93.43.63.53.22.82.42.122.3

Tide / Current Tables for Port San Luis, Pacific Ocean, California
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Port San Luis
Click for Map
Wed -- 01:18 AM PDT     5.32 feet High Tide
Wed -- 05:51 AM PDT     Sunrise
Wed -- 08:27 AM PDT     -0.59 feet Low Tide
Wed -- 10:56 AM PDT     Moonrise
Wed -- 03:25 PM PDT     4.53 feet High Tide
Wed -- 08:21 PM PDT     Sunset
Wed -- 08:47 PM PDT     2.33 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.95.35.24.63.62.310-0.5-0.5012.23.34.14.54.54.13.52.92.42.32.63.1

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 (13,3,4,5)
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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.