Wednesday, June20, 2018 L-36.com


Marine Weather and Tides
Cayucos, 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 8:22PM Wednesday June 20, 2018 6:28 AM PDT (13:28 UTC) Moonrise 12:25PMMoonset 12:20AM Illumination 46% Phase: First Quarter Moon; Moon at 7 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- 258 Am Pdt Wed Jun 20 2018
.small craft advisory in effect from this afternoon through this evening...
Today..NW winds 10 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 7 seconds. Patchy fog in the morning.
Tonight..NW winds 15 to 25 kt with local gusts to 30 kt in the evening, becoming 10 to 15 kt. Combined seas 5 to 7 ft dominant period 7 seconds. Patchy fog.
Thu..NW winds 10 to 15 kt, becoming 15 to 25 kt in the afternoon combined seas 5 to 7 ft dominant period 8 seconds. Patchy fog in the morning.
Thu night..NW winds 15 to 25 kt in the evening, becoming 10 to 15 kt. Combined seas 5 to 7 ft dominant period 8 seconds. Patchy fog.
Fri..NW winds 10 to 15 kt, becoming 15 to 25 kt in the afternoon. Combined seas 6 to 7 ft dominant period 9 seconds. Patchy fog in the morning.
Fri night..NW winds 15 to 25 kt in the evening, becoming 10 to 15 kt. Combined seas 5 to 7 ft dominant period 9 seconds. Patchy fog.
Sat..NW winds 10 to 15 kt, becoming S 5 to 10 kt late. Wind waves 2 ft. NW swell 5 to 7 ft. Patchy fog.
Sun..S winds 5 to 10 kt. Wind waves 2 ft or less. NW swell 4 to 5 ft. Patchy fog.
PZZ600 258 Am Pdt Wed Jun 20 2018
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 1022 mb high was located about 600 nm west of point conception. A 1004 mb thermal low was centered near needles. This pattern is expected to change little through Thu.

7 Day Forecast for Marine Location Near Cayucos, CA
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location: 35.43, -120.88     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 201216
afdlox
area forecast discussion
national weather service los angeles oxnard ca
516 am pdt Wed jun 20 2018

Synopsis 20 206 am.

High pressure in place over the region will bring above normal
temperatures with fair skies through the week, except for near
persistent conditions along the coast with night through morning
low clouds and fog. A slight cooling trend is expected over the
weekend with a slight warming trend early next week.

Short term (tdy-fri) 20 204 am.

Overall, 00z models are in very good synoptic agreement through
the period. At upper levels, a rather flat ridge will build over
the area. Near the surface, moderate onshore flow will continue.

Forecast-wise, typical early-summer conditions are anticipated
through the period. With ridge overhead, marine inversion will
remain rather shallow, around 1000-1400 feet, today through
Friday. Although onshore flow will remain rather strong, expect
stratus fog to mainly remain across the coastal plain. However
with the subsidence aloft and onshore flow, some areas near the
immediate coast could experience limited clearing each afternoon.

Other than the stratus fog across the coastal plain, skies are
expected to remain mostly clear through Friday.

As for temperatures, will anticipate a warming trend through the
period with ridge building overhead and limited stratus fog. 00z
mos guidance as well as local empirical temperature guidance
indicated slightly cooler temperatures through Friday than
previously forecast, but still well above normal away from the
coast. Warmest temperatures will occur across the mountains,
deserts and inland valleys with those areas in the low 100s. For
the coastal valleys, temperatures by Thursday Friday will range in
the upper 80s to mid 90s. Near the coast, the moderate to strong
onshore flow will keep temperatures a bit cooler, but still a
couple degrees above seasonal normals.

As for winds, the moderate to strong onshore gradients will
generate gusty southwesterly winds each afternoon evening across
the mountains and deserts with some isolated advisory-level gusts
likely in the foothills of the antelope valley (basically the lake
palmdale area). Additionally, with some weak northwesterly
gradients this evening, there may be some locally gusty sundowner
winds across southern santa barbara county.

Long term (sat-tue) 20 204 am.

For the extended, 00z models continue to exhibit good synoptic
agreement through the period. At upper levels, ridge will remain
relatively persistent through Monday then will strengthen a bit on
Tuesday. Near the surface, moderate to strong onshore flow will
continue.

Forecast-wise, only minor changes from day-to-day with conditions
very typical of early summer. Stratus fog will continue to impact
the coastal plain through the period with the possibility of a bit
more inland penetration into the lower coastal valleys this
weekend. Otherwise, mostly clear skies will continue. As for
temperatures, expect a slight cooling trend Saturday Sunday then a
slight warming trend Monday Tuesday. Gusty southwesterly winds
will continue each afternoon evening across the mountains and
deserts.

Aviation 20 1214z.

At 12z, the marine layer depth at klax was about 1500 ft. The top
of the inversion was near 3200 ft with a temperature of 28 c.

Widespread low clouds in all coastal areas and in the santa ynez
valley this morning. Conds were mostly ifr to lifr, except locally
low MVFR across the l.A. County coast. Some lifr CIGS may briefly
spread into the san gabriel valley and vtu county valleys for a
couple of hours early this morning. Expect skies to clear across
the valleys and inland portions of the coastal plain by mid
morning, and by late morning near the coast. There is a chance
that CIGS could linger into the afternoon at some beaches. Expect
similar low cloud coverage tonight, with CIGS spreading across the
coastal plain and in the santa ynez valley by midnight or shortly
thereafter.

Klax... Moderate confidence in the 12z taf. There is a 20-30%
chance CIGS will persist until as late as 21z. There of 20%
chance that CIGS will arrive as early as 04z this evening.

Kbur... High confidence in the 12z TAF withVFR conds through the
period. There is a 20 percent chance of MVFR vsbys through 17z
this morning, and again after 09z tonight.

Marine 20 438 am.

For the outer waters, high confidence in the forecast, with sca
conds thru late Fri night or Sat morning, then winds will diminish.

Winds may drop below SCA levels briefly at times, but in general,
expect SCA level winds to prevail with steep short period seas.

For the inner waters, north of point sal, good confidence in sca
level winds during the afternoon evening hours today thru fri.

For the inner waters south of point conception, winds and seas
are expected to remain below SCA levels thru sun. However, there
is a 30% chance of SCA level winds across the western half of the
santa barbara channel each afternoon evening thru fri.

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 9 am pdt Saturday for
zones 670-673. (see laxmwwlox).

Small craft advisory in effect until 3 am pdt Saturday for
zone 676. (see laxmwwlox).

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

Public... Thompson
aviation... Db
marine... Db
synopsis... Rat
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46215 - Diablo Canyon, CA (076) 16 mi32 min 52°F5 ft
PSLC1 - 9412110 - Port San Luis, CA 19 mi41 min Calm G 1.9
CPXC1 19 mi31 min NE 1 G 1.9 53°F 1014.8 hPa50°F
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 34 mi39 min NNW 19 G 25 52°F 53°F7 ft1013.8 hPa (-0.6)

Wind History for Port San Luis, CA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Luis Obispo, San Luis Obispo County-Mc Chesney Field, CA18 mi33 minNW 95.00 miFog/Mist52°F51°F97%1013.9 hPa
Paso Robles Municipal Airport, CA22 mi36 minENE 310.00 miFair52°F48°F86%1014.2 hPa

Wind History from SBP (wind in knots)
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Last 24hrNW4NW6NW84W9NW17NW21NW21NW19NW18NW12NW16NW13NW12NW10NW7NW5NW3CalmCalmNW3NW6NW8NW9
1 day agoCalmCalmNW13NW12NW18
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NW13NW10NW11NW10NW8NW7W6NW4NW3CalmNW4W4
2 days agoS3Calm4S8NW3CalmW85SW9SW10SW9NW10NW12NW10NW8NW5W5CalmCalmSE3CalmSE4SE3SE4

Tide / Current Tables for Morro Beach, Estero Bay, California
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Morro Beach
Click for Map
Wed -- 01:19 AM PDT     Moonset
Wed -- 03:52 AM PDT     First Quarter
Wed -- 04:22 AM PDT     3.96 feet High Tide
Wed -- 05:48 AM PDT     Sunrise
Wed -- 11:03 AM PDT     0.34 feet Low Tide
Wed -- 01:24 PM PDT     Moonrise
Wed -- 06:01 PM PDT     4.69 feet High Tide
Wed -- 08:21 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.22.63.23.73.93.93.52.821.20.60.30.51.1233.94.54.74.543.22.51.9

Tide / Current Tables for Avila, California
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Avila
Click for Map
Wed -- 01:19 AM PDT     Moonset
Wed -- 03:08 AM PDT     1.41 feet High Tide
Wed -- 03:52 AM PDT     First Quarter
Wed -- 05:48 AM PDT     Sunrise
Wed -- 10:13 AM PDT     -2.55 feet Low Tide
Wed -- 01:24 PM PDT     Moonrise
Wed -- 05:22 PM PDT     1.94 feet High Tide
Wed -- 08:20 PM PDT     Sunset
Wed -- 11:31 PM PDT     -0.66 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.30.81.21.41.30.80.1-0.8-1.6-2.2-2.5-2.4-1.9-100.91.61.91.91.50.90.2-0.3-0.6

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 (9,2,3,4)
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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.