Saturday, April20, 2019 L-36.com


Marine Weather and Tides
Morro Bay, CA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:22AMSunset 7:40PM Saturday April 20, 2019 9:13 AM PDT (16:13 UTC) Moonrise 8:19PMMoonset 6:31AM Illumination 99% Phase: Waning Gibbous; Moon at 16 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- 902 Am Pdt Sat Apr 20 2019
.small craft advisory in effect from noon today to 6 pm pdt this evening...
.gale warning in effect from 6 pm pdt this evening through late tonight...
Today..NW winds 10 to 15 kt, becoming 15 to 25 kt with gusts to 30 kt in the afternoon. Combined seas 5 to 7 ft dominant period 12 seconds, building to 8 to 9 ft dominant period 12 seconds in the afternoon.
Tonight..NW winds 20 to 25 kt in the evening, becoming 15 to 25 kt. Gusts to 35 kt. Combined seas 7 to 9 ft dominant period 9 seconds.
Sun..NW winds 15 to 25 kt with gusts to 30 kt in the afternoon. Combined seas 7 to 9 ft dominant period 10 seconds.
Sun night..NW winds 20 to 30 kt in the evening, becoming 10 to 15 kt. Combined seas 8 to 10 ft dominant period 10 seconds, subsiding to 7 to 8 ft dominant period 10 seconds after midnight.
Mon..NW winds 10 to 15 kt. Wind waves 2 ft or less. NW swell 6 to 7 ft at 10 seconds.
Mon night..NW winds 10 to 20 kt in the evening, becoming N 5 to 10 kt. Wind waves 1 to 3 ft. NW swell 5 to 7 ft at 9 seconds.
Tue..NW winds 5 to 10 kt. Wind waves 2 ft or less. NW swell 4 to 6 ft.
Wed..NW winds 10 to 15 kt. Wind waves 2 ft or less. NW swell 3 to 4 ft.
PZZ600 902 Am Pdt Sat Apr 20 2019
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 1029 mb surface high was centered 700 nm W of san francisco, while a 1004 mb thermal low was centered around las vegas. High pressure will push closer to the coast and strengthen over the weekend, resulting in widespread gusty winds and choppy seas.


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 201414 aaa
afdlox
area forecast discussion... Updated
national weather service los angeles oxnard ca
714 am pdt Sat apr 20 2019

Synopsis 20 710 am.

A deep marine layer will keep skies mostly cloudy today along with
below normal afternoon temperatures. Sunday will be a little
sunnier and warmer. Sunshine and warming temperatures return for
next week.

Short term (tdy-mon) 20 312 am.

A little trof is exiting the SE portion of the state while a
larger trof is dropping into the north of the state. There is
between 5 and 7 mb of onshore flow both to the east and the north.

The trof and the strong winds across the outer waters have spun up
a good sized eddy. All of these things have combined to produce a
preview of june gloom. The marine layer has risen to 3000 feet and
will likely be at 4000 feet by late morning. Marine layer stratus
covers all of the coastal and vlys areas and even covers the lower
coastal slopes. The northern portion of the slo interior vly is
also covered with stratus. The onshore flow to kdag will peak at
about 9.5 mb this afternoon. This strong onshore flow in
conjunction with the eddy will preclude any clearing and today
will be mostly cloudy across the coasts and vlys. The lift from
the eddy will also produce a quite a bit of drizzle this morning.

The strong onshore flow will produce enhanced coastal sea breezes
and advisory level wind gusts across the antelope vly. MAX temps
will plummet and most areas will see MAX temps 5 to 10 degrees
blo normal.

The 2nd upper trof will move through the areas tonight. It will
keep the marine layer stratus going across the coasts and most of
the vlys with the exception of the sba south coast where north
winds should keep the low clouds away.

A slow moving inside slider will move down the ca nv border on
Sunday. It will reduce the onshore gradients by about 3 mb. This
will help clear most of the marine layer stratus by late morning
or early afternoon. MAX temperatures will bump up a little, but
will remain below normal.

The onshore flow to the east greatly diminishes Sunday night and
actual offshore flow develops from the north. This will reduce the
marine layer stratus coverage which should be confined to the la
county coast and lower vlys as well as a little bit of the vta
coast. The north winds will create some upslope clouds on the
north slopes on the kern county line.

A ridge will build into the area on Monday. Skies will be clear
everywhere by noon. The rising hgts... Offshore flow from the north
and late april sunshine will all combine to bring 5 to 10 degrees
of warming to the area.

Long term (tue-fri) 20 321 am.

Synoptically a ridge will sit over the area Tuesday through
Thursday. The GFS and ec disagree on the Friday forecast with the
ec advertising weak cyclonic flow and the GFS with weak anti
cyclonic flow.

The best offshore flow will be Tuesday and there may be a need for
a few low end advisories. The offshore flow will eliminate the
stratus. The increased hgts and offshore flow will bring another 5
to 10 degrees of warming and MAX temps will be 4 to 8 degrees
above normal with plenty of readings in the mid and upper 80s.

Not too much change to the forecast for Wednesday. The offshore
flow will be weaker from the north and there will be onshore flow
to the east. The beaches will likely cool some but the rest of the
area will see similar temps or even a degree warmer.

Look for some cooling each day Thu and Fri as the ridge weakens.

The onshore flow increases enough to bring night through morning
stratus back to the immediate coasts. MAX temps will still remain
above normal.

Aviation 20 1016z.

At 0928z, the marine layer was around 1900 feet deep. The top of
the inversion was 4100 feet with a temperature of 14 degrees
celsius.

Moderate confidence in 12z tafs. Good confidence that CIGS will
continue to rise from ifr to MVFR by mid morning. Timing could be
off by an hour or two. There will be patchy drizzle across the
coasts and valleys through 18z. There is a 30 percent chc of sct
conds at any terminal from 20z- 02z
later this afternoon there will be strong southwesterly winds
across the deserts with a 20-30% chance of MVFR vsbys in blowing
dust and sand.

Klax... Overall, moderate confidence in 12z taf. Timing of flight
cat changes could be off by + - 2 hours. There is a 30% chance
that MVFR CIGS will dissipate after 20z.

Kbur... Overall, moderate confidence in 12z taf. Timing of flight
cat changes could be off by + - 2 hours. There is a 30% chance
that MVFR CIGS will dissipate after 20z.

Marine 20 243 am.

For the outer waters, moderate confidence in the current
forecast. Winds and seas will remain below small craft advisory
(sca) levels through mid morning, then by mid-morning through mid
afternoon, a small craft advisory will be in effect for gusty nw
winds and choppy seas through this afternoon. The southern zone
(pzz676) will be (sca) this afternoon through early this evening.

At that time, there is a 70% chance for gale force winds to
develop through late tonight or pre-dawn hours Sunday. Gale
watches were upgraded to gale warnings, and another gale warning
was added for the southern portion of the outer waters in (pzz676)
through the same time period early Sunday morning. There is a 50%
chance for more gale force winds for the outer waters Sunday
afternoon and evening hours.

For the inner waters north of point sal, moderate confidence in
current forecast. Winds and seas will remain below SCA levels
this morning, then a (sca) will be in effect from noon today
through early this evening. At that time the gale watch that was
in effect, will be upgraded to a gale warning through late tonight
or pre-dawn Sunday morning. There is a good chance that a (sca)
will be needed for Sunday afternoon into the overnight hours.

For the inner waters south of point conception, moderate
confidence in current forecast. Winds and seas are expected to
remain below SCA levels through this morning. However, a (sca) has
been issued for the inner santa barbara channel for this afternoon
and continue into Sunday morning. The main focus for the (sca)
will be the western portion, while the eastern portion will
encounter variable winds between 5 and 15 kt for the most part.

Otherwise, winds for the remaining inner waters, should remain
below (sca) thresholds. There will be some local NW winds to 20 kt
around the NW portion of (pzz655) or around anacapa island this
afternoon and evening hours. From Sunday afternoon through
Wednesday, winds and seas are expected to remain below SCA levels.

Lox watches warnings advisories
Ca... Wind advisory in effect from 2 pm this afternoon to 6 am pdt
Sunday for zone 59. (see laxnpwlox).

Pz... Small craft advisory in effect from noon today to 6 pm pdt
this evening for zone 645. (see laxmwwlox).

Gale warning in effect from 6 pm this evening to 3 am pdt
Sunday for zones 645-676. (see laxmwwlox).

Small craft advisory in effect from 3 pm this afternoon to 9
am pdt Sunday for zone 650. (see laxmwwlox).

Small craft advisory in effect until 3 pm pdt this afternoon
for zones 670-673. (see laxmwwlox).

Gale warning in effect from 3 pm this afternoon to 3 am pdt
Sunday for zones 670-673. (see laxmwwlox).

Small craft advisory in effect from 3 pm this afternoon to 6
pm pdt this evening for zone 676. (see laxmwwlox).

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

Public... Rorke
aviation... Kaplan
marine... Kaplan
synopsis... 30
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46215 - Diablo Canyon, CA (076) 13 mi44 min 59°F4 ft
CPXC1 18 mi40 min S 2.9 G 4.1 54°F 1016.3 hPa51°F
PSLC1 - 9412110 - Port San Luis, CA 18 mi44 min S 1 G 2.9 54°F 55°F1016.5 hPa
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 30 mi84 min NW 9.7 G 12 54°F 55°F5 ft1015.5 hPa (+1.8)

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 mi18 minNW 310.00 miOvercast54°F50°F87%1015.7 hPa

Wind History from SBP (wind in knots)
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Last 24hr3S5CalmSW7NW12NW13NW84NW5NW6NW5NW6NW8NW6NW11NW8NW4W4NW5Calm4NW9NW4NW3
1 day agoCalmSW4SW5SW7SW9SW6NW7NW9NW10NW7NW5NW8SW4CalmNW3CalmNW4NW3N3CalmSE3CalmSE3S3
2 days agoW63NE8NW14NW20NW18
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NW14NW17NW14NW10NW5W5E5CalmCalmCalmE3SE6Calm4SE544

Tide / Current Tables for Morro Beach, Estero Bay, California
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Morro Beach
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Sat -- 05:40 AM PDT     -0.76 feet Low Tide
Sat -- 06:24 AM PDT     Sunrise
Sat -- 07:31 AM PDT     Moonset
Sat -- 11:53 AM PDT     4.28 feet High Tide
Sat -- 05:25 PM PDT     0.78 feet Low Tide
Sat -- 07:40 PM PDT     Sunset
Sat -- 09:18 PM PDT     Moonrise
Sat -- 11:37 PM PDT     5.57 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.34.431.50.2-0.6-0.7-0.20.92.13.344.33.93.22.21.30.80.91.52.53.74.85.4

Tide / Current Tables for Port San Luis, California
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Port San Luis
Click for Map
Sat -- 05:35 AM PDT     -0.74 feet Low Tide
Sat -- 06:24 AM PDT     Sunrise
Sat -- 07:30 AM PDT     Moonset
Sat -- 11:50 AM PDT     4.31 feet High Tide
Sat -- 05:16 PM PDT     1.12 feet Low Tide
Sat -- 07:39 PM PDT     Sunset
Sat -- 09:18 PM PDT     Moonrise
Sat -- 11:28 PM PDT     5.73 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.34.32.91.40.1-0.6-0.7-0.112.23.44.14.33.93.22.31.51.11.31.92.94.15.15.7

Weather Map and Satellite Images
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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 (12,3,4,5)
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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.