Friday, June23, 2017 L-36.com


Marine Weather and Tides
Atascadero, CA

Version 3.4
What's New / NOTES
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 5:47AMSunset 8:23PM Friday June 23, 2017 6:48 AM PDT (13:48 UTC) Moonrise 4:34AMMoonset 7:03PM Illumination 0% Phase: New Moon; Moon at 29 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- 221 Am Pdt Fri Jun 23 2017
Today..Winds variable 10 kt or less...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. NW swell 5 to 6 ft at 10 seconds. Patchy fog in the morning.
Tonight..NW winds 5 to 10 kt. Wind waves 2 ft or less. Mixed swell nw 5 ft at 10 seconds and se 3 ft at 16 seconds. Patchy dense fog with vsby 1 nm or less after midnight.
Sat..NW winds 10 to 15 kt. Wind waves 2 ft. NW swell 4 to 5 ft at 9 seconds. Patchy dense fog with vsby 1 nm or less in the morning.
Sat night..NW winds 10 to 15 kt in the evening...becoming 5 to 10 kt. Wind waves 2 ft or less. NW swell 3 to 4 ft at 8 seconds. Patchy fog after midnight.
Sun..Winds variable 10 kt or less...becoming nw 10 to 15 kt in the afternoon. Wind waves 2 ft or less. NW swell 3 to 4 ft at 6 seconds. Patchy fog in the morning.
Sun night..NW winds 10 to 15 kt in the evening...becoming 5 to 10 kt. Wind waves 2 ft or less. NW swell 3 to 4 ft at 6 seconds. Patchy fog after midnight.
Mon..NW winds 15 to 20 kt with gusts to 25 kt. Combined seas 4 to 5 ft. Patchy fog.
Tue..NW winds 15 to 20 kt with gusts to 25 kt. Combined seas 4 to 6 ft. Patchy fog.
PZZ600 221 Am Pdt Fri Jun 23 2017
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 09z...or 2 am pdt...a 1023 mb surface high was centered over southern oregon, and a 1001 mb thermal low was centered near las vegas. Patchy dense fog will likely the coastal waters through the weekend. Winds will increase through the weekend with small craft advisory conditions possible across the outer coastal waters as early as Saturday.

7 Day Forecast for Marine Location Near Atascadero, CA
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location: 35.46, -120.69     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 231020
afdlox
area forecast discussion
national weather service los angeles oxnard ca
320 am pdt Fri jun 23 2017

Synopsis
High pressure aloft centered over southern arizona will continue
to bring very warm conditions away from the coast into next week.

Skies should be fair, except for night through morning low clouds
and fog. A cooling trend should develop Tuesday as a low pressure
system off the california coast will weaken the upper- level dome
of high pressure and increase onshore flow.

Short term (tdy-sun)
marine layer is up to 2000 feet and the onshore flow is 2 mb
stronger to the east and 1 mb stronger to the north. This has
allowed marine layer stratus to move into all of vlys including
the santa clarita. The lifting of the marine layer has created
some drizzle and also removed the dense fog. The deep marine layer
will also bring more cooling into the vlys and lower elevations of
the mtns as well. The stronger onshore flow will mean the low
clouds will clear slowly and will likely not clear at all for most
of the beaches. No change to the inland temps where much above
average hgts will keep the much above normal temps going with
little change from ydy.

A little north flow will set up tonight although it will be weaker
than previously thought as the central vly high pressure does not
really show up. There will be sub advisory north winds through the
i-5 corridor and the sba south coast. This north push will limit
the vly penetration of the low clouds and will keep the western
half of the sba south coast clear.

Weaker pressure gradients will allow for slight faster better
clearing on Saturday. This will create some warming across the
coasts and vlys. The inland areas will see little change in the
relentlessly hot temps. The atmosphere over the mtns will become
pretty unstable but there is no low level moisture to work with.

There is some mid level moisture and there will likely be some
accas clouds in the afternoon.

The ridge pushes slowly to the east on Sunday but not really fast
enough to influence the temps. In fact the day will be very
similar to Saturday except that the mtns will be more stable and
thus there will be no afternoon clouds.

Long term (mon-thu)
gfs and ec agree through Tuesday. Both mdls flatten the ridge as
well as pushing it southward hgts fall from 593 dm to 590 dm
Monday and to 588 dm Tuesday. Onshore flow increase to the east
but decreases and actually turns offshore Tuesday. So there will
be a general cooling trend ESP inland through the period with the
exception of few vly location below north oriented canyons. Buy
Tuesday MAX temps will approach or reach normal at most locations.

The Wed and Thu forecasts are still in doubt as ec and gfs
continue to exhibit different forecasts. The ec begins to build a
ridge into the area while the GFS continues with the troffing
scenario. Both mdls have hung on to their respective fcsts for a
couple of days now it will be interesting to see which one blinks
and trends to the other's solution (hopefully it will not be the
annoying situation where both mdls change and adopt the others
forecast) for now have coordinated with the surrounding offices
and have agreed to persist with the cooler GFS soln.

Aviation
23 1020z
at 0930z at klax, the marine layer depth was near 2200 feet. The
top of the inversion was around 5000 feet with a temperature near
26 degrees celsius.

For 12z tafs... Moderate confidence in respect to stratus
persisting across coastal tafs much of today. Lower confidence in
timing of lifr-ifr CIGS going up a category this morning. Higher
confidence for MVFR CIGS for areas S of point conception after 16z
this morning. 30% chance no clearing will occur today for klgb,
klax, koxr before 22z. For terminals that have lifr conds N of
point conception, 30 percent chc that conds will remain ifr.

Terminals that are forecast to have no clearing may see some sct
conds 22z- 01z.

Klax... Moderate confidence in taf. There is a 30 percent chc of no
afternoon clearing. Very high confidence that there will not be an
east wind component over 5kt.

Kbur... Moderate confidence in taf. There is a 40 percent chc that
MVFR CIGS will not scour out until 20z.

Marine
23 245 am.

Winds will remain below small craft advisory levels through
Friday night across the outer waters, then gradually increase
through Monday. There is a 50 percent chance of small craft
advisory level winds developing Saturday morning with a better
chance by the afternoon. Across the outer coastal waters but more
likely Saturday and through the weekend. Across the inner waters,
confidence is high there will not be any SCA through the weekend.

However there will be a 50-60% chance for local gusts to 25 kt
across the NW portion of the sba inner waters.

A 2-3 foot south swell at 16-17 second period will last through
Saturday and may pose a risk for breaking waves nearshore. People
boating or kayaking near shore should use extra caution.

Although the coverage of dense fog is easing a bit, there is still
a 40% chance of patchy dense fog during the night and mornings
through the weekend.

Lox watches warnings advisories
Ca... Heat advisory in effect until 9 pm pdt Sunday for zones
38-52-53. (see laxnpwlox).

Beach hazards statement in effect through Saturday evening
for zones 40-41-87. (see laxcfwlox).

Excessive heat warning in effect until 9 pm pdt Sunday for
zones 54-59. (see laxnpwlox).

Pz... None.

Hazard potential outlook (sun-thu)
hot temperatures with potential heat impacts will continue for
inland areas Sunday.

Public... Rorke
aviation... Kaplan
marine... Kaplan
synopsis... Hall
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PSLC1 - 9412110 - Port San Luis, CA 20 mi48 min Calm G 1.9 56°F 59°F1013.6 hPa (+0.7)
46215 - Diablo Canyon, CA (076) 20 mi58 min 58°F5 ft
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 39 mi58 min S 1.9 G 3.9 56°F 57°F5 ft1012.6 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, CA15 mi52 minSW 35.00 miFog/Mist57°F55°F96%1012.4 hPa
Paso Robles Municipal Airport, CA16 mi55 minNNW 310.00 miFair57°F53°F87%1011.1 hPa

Wind History from SBP (wind in knots)
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Last 24hrS3CalmSE3CalmCalmSW5SW7SW6SW10W73NW63W4SW3SW3CalmSW5SW5SW3S3SW4SW4SW3
1 day agoCalmS5CalmCalm53NW10
G15
NW10NW9NW12NW11NW10NW9NW7NW6NW4CalmCalmCalmSE3CalmS3CalmSE3
2 days agoSW3CalmCalm33CalmNW10NW11NW12NW11NW8NW12NW12NW11NW8NW8NW6NW6NW6NW4NW4NW3CalmCalm

Tide / Current Tables for Morro Beach, Estero Bay, California
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Morro Beach
Click for Map
Fri -- 04:36 AM PDT     -1.36 feet Low Tide
Fri -- 05:35 AM PDT     Moonrise
Fri -- 05:49 AM PDT     Sunrise
Fri -- 11:00 AM PDT     4.01 feet High Tide
Fri -- 03:56 PM PDT     1.50 feet Low Tide
Fri -- 07:32 PM PDT     New Moon
Fri -- 08:03 PM PDT     Moonset
Fri -- 08:22 PM PDT     Sunset
Fri -- 10:13 PM PDT     6.63 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.32.71-0.4-1.2-1.3-0.70.41.72.93.743.83.12.41.71.51.82.63.85.16.16.66.4

Tide / Current Tables for Morro Bay, California
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Morro Bay
Click for Map
Fri -- 05:29 AM PDT     -0.70 feet Low Tide
Fri -- 05:35 AM PDT     Moonrise
Fri -- 05:49 AM PDT     Sunrise
Fri -- 11:35 AM PDT     2.97 feet High Tide
Fri -- 04:19 PM PDT     1.83 feet Low Tide
Fri -- 07:32 PM PDT     New Moon
Fri -- 08:03 PM PDT     Moonset
Fri -- 08:22 PM PDT     Sunset
Fri -- 10:38 PM PDT     5.63 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.33.21.90.8-0.1-0.6-0.6-0.10.81.72.42.92.92.72.421.81.92.33.14.14.95.55.6

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 (9,2,3,4)
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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.