Friday, April20, 2018 L-36.com


Marine Weather and Tides
Morro Bay, 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 6:20AMSunset 7:41PM Friday April 20, 2018 1:31 PM PDT (20:31 UTC) Moonrise 9:16AMMoonset 11:51PM Illumination 29% 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- 900 Am Pdt Fri Apr 20 2018
.small craft advisory in effect from 3 pm pdt this afternoon through late tonight...
Today..Winds variable 10 kt or less, becoming nw 15 to 25 kt in the afternoon. Combined seas 5 to 7 ft dominant period 9 seconds. Patchy fog in the morning.
Tonight..NW winds 15 to 25 kt in the evening, becoming N 5 to 10 kt. Combined seas 6 to 8 ft dominant period 10 seconds.
Sat..NE winds 5 to 10 kt, becoming nw 10 to 20 kt in the afternoon. Wind waves 1 to 3 ft. W swell 5 to 6 ft at 15 seconds.
Sat night..NW winds 15 to 20 kt in the evening, becoming 5 to 10 kt. Wind waves 2 to 3 ft. NW swell 5 to 6 ft at 15 seconds.
Sun..NW winds 5 to 10 kt, becoming 10 to 15 kt in the afternoon. Wind waves 2 ft or less. NW swell 5 to 6 ft at 15 seconds.
Sun night..NW winds 10 to 15 kt in the evening, becoming ne 5 to 10 kt. Wind waves 2 ft or less. NW swell 5 to 6 ft at 15 seconds.
Mon..N winds 5 to 10 kt early, becoming nw 15 to 25 kt. Combined seas 5 to 7 ft.
Tue..NW winds 15 to 25 kt with gusts to 30 kt. Combined seas 7 to 9 ft. Patchy fog.
PZZ600 900 Am Pdt Fri Apr 20 2018
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 1032 mb surface high was centered 900 nm west of san francisco, while a 1008 mb low was over colorado. The high will push into oregon over the weekend while a 1008 mb thermal low sets up over southeast arizona.

7 Day Forecast for Marine Location Near Morro Bay, CA
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location: 35.39, -120.93     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 201752
afdlox
area forecast discussion
national weather service los angeles oxnard ca
1052 am pdt Fri apr 20 2018
updated aviation section

Synopsis 20 928 am.

High pressure and offshore flow will bring above normal temperatures
from Friday into Monday. An eddy will usher in overnight coastal
low clouds and fog from Saturday into Monday. Then a low should
arrive by Tuesday for increasing onshore flow and a cooling trend
through Friday.

Short term (tdy-sun) 20 912 am.

The upper low has exited the area and a weak ridge of high
pressure will take its place through Saturday. Already seeing
decent warming aloft and some of that will translate to the
surface as well so some warming today and more so Saturday,
especially inland. Coastal areas will still have a marine layer
and light onshore flow to deal with so quite a bit cooler there.

With the ridge building today the marine layer depth should lower
overnight and there could be some areas of dense fog, especially
north of pt conception.

***from previous discussion***
overall, Saturday and Sunday will be fairly similar. A weak to
moderate eddy will spin up low clouds and fog to coastal areas
south of point conception by morning each day. A weak sundowner
may delay the onset of low clouds for the sba south coast Sunday
night. Away from the coast temperatures will be warmer with highs
in the mid 70s to mid 80s common.

Long term (mon-thu) 20 333 am.

Below normal confidence continues for later next week. This is
mainly due to the erratic and hard to predict nature of cut-off
low pressure systems.

Ridging aloft will gradually weaken, giving way to gradually
increasing onshore flow through the middle of next week ahead of
slow moving cut-off low pressure system approaching from the west.

Slowly lowering heights and an earlier sea breeze making it
further inland should combined to provide a gradual cooling trend
for much of next week. The southwesterly flow and lowering heights
should help develop low clouds across the remainder of southwest
california and low clouds possibly making into valley areas by the
middle of next week. Mid and high clouds are possible at times
with high level moisture riding up and over the ridge. The
increasing onshore flow will likely support breezy onshore winds
for the interior starting early next week.

Aviation 20 1751z.

At 17z, the marine layer at klax was 1800 feet deep. The top of
the inversion was 3000 feet at 12 degrees celsius.

High confidence inVFR conditions everywhere through 01z with
seasonal onshore flow. 40% chance of ifr ceilings at ksmx 01-06z,
likely clearing by 08z. Ceiling possibilities after 06z... 80%
klgb klax ksmo... 50% koxr... 30% kcma ksba... 20% kbur kvny... 10%
ksbp kprb. Low confidence on ceiling heights, with anything
between 005-015 possible.

Klax... High confidence inVFR through 06z with seasonal onshore
flow. 80% chance of ceiling tonight with arrival window of 06-10z.

If ceilings form, 60% chance of low-MVFR, 30% chance of ifr, 10%
chance of lifr. SE winds will form again after 08z, likely under
08 kt.

Kbur... High confidence inVFR through 09z with seasonal southerly
winds. 20% chance of ifr conditions 10-16z.

Marine 20 908 am.

Low confidence on fog forecast, but dense fog is possible now
through the weekend. High confidence in widespread short period
seas into tonight, with decreasing heights.

High confidence in small craft advisory (sca) winds from the
central coast the san nicolas island through tonight, with weaker
and more borderline SCA over the weekend. Over the inner waters
from the santa barbara channel to the san pedro channel, SE winds
will form each morning through at least morning, up to 15 kt
through the passages and channels. Typical onshore winds expected
in the afternoon, with near SCA west winds on the far western
santa barbara channel.

Lox watches warnings advisories
Ca... None.

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

Small craft advisory in effect until 3 am pdt Sunday for
zones 670-673. (see laxmwwlox).

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

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

Public... Mw munroe
aviation... Kittell
marine... Kittell
synopsis... Stu
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46215 - Diablo Canyon, CA (076) 13 mi34 min 55°F6 ft
PSLC1 - 9412110 - Port San Luis, CA 18 mi43 min E 7 G 8
CPXC1 18 mi31 min SE 6 G 7 62°F 1020.6 hPa48°F
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 30 mi41 min NW 16 G 19 53°F 53°F7 ft1021.2 hPa (-1.3)

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, CA19 mi35 minNW 1610.00 miFair67°F50°F55%1020.2 hPa

Wind History from SBP (wind in knots)
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Last 24hrNW19
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NW19NW19
G27
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NW13NW11NW10NW7W5W5W5E4CalmE3CalmCalmCalmSE4CalmNW10NW12NW14NW16
1 day agoN15NW17NW15NW15NW13
G20
NW12NW7W3CalmCalmSE3E3CalmCalmCalmE5CalmCalmNW7NW10NW7W9NW12NW15
2 days agoN9
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NW19NW14NW13NW13CalmW3Calm3E3CalmE3E4E4SE4CalmSE3NW4W43NW19

Tide / Current Tables for Morro Beach, Estero Bay, California
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Morro Beach
Click for Map
Fri -- 01:11 AM PDT     5.05 feet High Tide
Fri -- 06:24 AM PDT     Sunrise
Fri -- 08:38 AM PDT     -0.28 feet Low Tide
Fri -- 10:15 AM PDT     Moonrise
Fri -- 03:29 PM PDT     3.10 feet High Tide
Fri -- 07:40 PM PDT     Sunset
Fri -- 07:47 PM PDT     2.25 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.754.94.33.42.31.20.3-0.2-0.30.10.71.52.22.83.13.12.92.62.32.32.42.83.4

Tide / Current Tables for Port San Luis, Pacific Ocean, California
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Port San Luis
Click for Map
Fri -- 01:04 AM PDT     5.34 feet High Tide
Fri -- 06:24 AM PDT     Sunrise
Fri -- 08:33 AM PDT     -0.58 feet Low Tide
Fri -- 10:15 AM PDT     Moonrise
Fri -- 03:30 PM PDT     3.41 feet High Tide
Fri -- 07:39 PM PDT     Sunset
Fri -- 07:49 PM PDT     2.46 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.15.35.14.53.42.210-0.5-0.5-0.10.61.62.433.43.43.12.82.52.52.73.13.7

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 (16,3,4,5)
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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.