Wednesday, May24, 2017 L-36.com


Marine Weather and Tides
Morro Bay, 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 5:49AMSunset 8:09PM Wednesday May 24, 2017 6:33 AM PDT (13:33 UTC) Moonrise 4:17AMMoonset 6:01PM Illumination 1% Phase: Waning Crescent; Moon at 28 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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PZZ670 Point Piedras Blancas To Point Sal From 10 To 60 Nm- 216 Am Pdt Wed May 24 2017
Today..W to nw winds 10 to 15 kt. Wind waves 2 ft or less. W swell 3 to 4 ft at 13 seconds. Patchy fog in the morning.
Tonight..SW winds 10 kt in the evening...becoming variable 10 kt or less. Wind waves 2 ft or less. W swell 3 to 4 ft at 12 seconds. Patchy fog in the evening.
Thu..S winds 5 to 10 kt. Wind waves 2 ft or less. W swell 3 ft at 12 seconds.
Thu night..S winds 10 kt in the evening...becoming variable 10 kt or less. Wind waves 2 ft or less. NW swell 3 to 4 ft at 11 seconds.
Fri..Winds variable 10 kt or less...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. NW swell 3 to 4 ft at 10 seconds.
Fri night..NW winds 5 to 10 kt. Wind waves 2 ft or less. NW swell 3 to 4 ft at 10 seconds.
Sat..NW winds 15 to 20 kt with gusts to 25 kt. Combined seas 4 to 5 ft. Patchy fog.
Sun..NW winds 15 to 25 kt with gusts to 30 kt. Combined seas 5 to 7 ft. Patchy fog.
PZZ600 216 Am Pdt Wed May 24 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 1038 mb high was high was 900 nm W of seattle and a 1004 mb low was near las vegas.

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


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 241010
afdlox
area forecast discussion
national weather service los angeles oxnard ca
310 am pdt Wed may 24 2017

Synopsis
A low pressure system will approach southwest california by
midweek... Spreading night through morning low clouds and fog
farther inland. A cooling trend will continue through late in the
week. A ridge of high pressure will build in over the
weekend... Bringing warmer conditions for early next week. Marine
layer clouds will then be confined to near-coastal areas.

Short term (tdy-fri)
three fairly similar days ahead for SRN ca as strong onshore flow
will dominate the weather. The marine layer around klax is about
1200 feet deep but it is likely much lower from vta county
northward where are much lower ceilings and reduced visibilities.

Late this morning a trof will move over the state and this will
raise the marine layer. More importantly it will increase the
onshore flow. The NAM forecasts a 9 mb onshore push to kdag which
given the nams usual exuberance in overforecasting gradients is
more likely about 7.5 mb onshore but this is still strong enough
to bring slow to no clearing to the beaches and 45 mph advisory
level gusts to the antelope vly. The deepening marine layer... The
strong onshore flow and the lowering hgts will all combine to make
today a much cooler day everywhere (except the beaches which has
their cool down ydy) temps will cool to normal across most of the
area and the beaches will be below normal. It still looks very
unstable over the mtns this afternoon with plenty of CAPE as well
but the moisture remains the missing ingredient and its likely
that all that will develop over the mtns today is a cumulus field.

Tonight the strong onshore push will combine with the falling hgts
and weak lift of the trof to raise the marine layer to between
4000 and 5000 feet. Clouds will push all the way to the coastal
slopes and deep into the vlys. Would not be surprised to see a
little drizzle near the foothills as well.

Hard to imagine any clearing on Thursday. The NAM forecasts an
afternoon onshore push of 11.2 mb which if true would be the
highest observed in the month of may since the turn of the
century. More than likely the gradient will be around 10 mb
onshore which is still strong enough to keep the clouds over the
area and advisory level gusts in the antelope vly. MAX temps will
continue to fall ESP in the vlys and the interior and most max
temps will be 8 to 12 degrees blo normal.

Not much change on Friday and expect similar conditions to thu.

The onshore push is forecast to be about 2 mb weaker than Thu so
may just a little more clearing and maybe a degree or 2 of
warming.

Long term (sat-tue)
the trof exits and a ridge builds in starting late Friday
afternoon. Just in time to rescue the holiday weekend. The ridge
will build every day and peak on Monday. The marine layer clouds will
not go away but it will be reduced in coverage a little each day
and will clear totally by late morning. MAX temps will climb each
day. They will still be below normal on Saturday but will rise
above normal on Sunday and then on Monday MAX temps should be 8 to
12 degrees above normal will more thanThursday through a few 90 degree readings
likely in the vlys and deserts.

The ridge pushes off to the east on Tuesday and this will kick off
a slight cooling trend.

Aviation
24 1000z
at 1000z, the marine inversion at klax was based around 1200 feet.

The top of the inversion was 2900 feet with a temperature of
24 degrees celsius.

Overall, moderate confidence in 12z TAF package. Current ifr to
vlifr conditions at coastal sites will improve toVFR conditions
by the afternoon, although klax ksmo koxr will likely remain MVFR
through the afternoon. For tonight, high confidence in MVFR ifr
conditions for all coastal and valley sites, but only moderate
confidence in timing (+ - 2 hours of forecast).

Klax... Moderate confidence in 12z taf. Transition to MVFR cigs
will be between 16z and 20z. There is a 30% chance ofVFR
conditions 20z-02z. For tonight, there is a 30% chance ifr cigs
could develop.

Kbur... Moderate confidence in 12z taf. There is a 20% chance of
ifr conditions 13z-16z. For tonight, high confidence in return of
stratus, but only moderate confidence in flight category (either
ifr or MVFR) and timing (+ - 2 hours of current 06z forecast).

Marine
24 130 am
for the outer waters, high confidence in current forecast. Winds
and seas will remain below small craft advisory (sca) levels
through Friday. On Friday and Saturday, winds will likely increase
to SCA levels.

For the inner waters, high confidence in current forecast. For the
waters north of point sal, winds and seas will remain below sca
levels through Friday, but will likely increase to SCA levels
Saturday and Sunday. For the waters south of point conception,
winds and seas will remain below SCA levels through Sunday.

Lox watches warnings advisories
Ca... Wind advisory in effect from 2 pm this afternoon to 9 pm pdt
this evening for zone 59. (see laxnpwlox).

Pz... None.

Hazard potential outlook (fri-tue)
advisory level southwest winds are possible Friday across the
mountains and deserts.

Public... Rorke
aviation... Thompson
marine... Thompson
synopsis... Smith
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46215 - Diablo Canyon, CA (076) 13 mi43 min 57°F3 ft
PSLC1 - 9412110 - Port San Luis, CA 18 mi45 min S 1.9 G 4.1 51°F 56°F1013.5 hPa
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 30 mi43 min NNW 12 G 14 53°F 53°F4 ft1012.7 hPa (+0.0)

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 mi37 minNNW 74.00 miFog/Mist53°F51°F93%1012.3 hPa

Wind History from SBP (wind in knots)
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Last 24hrNW4N33SW3W5NW11NW10NW8NW5NW8NW11NW11NW14NW9NW8NW5NW5NW4W4W3NW7W6NW5N7
1 day agoN3NW3W434NW6NW9NW8NW6NW7NW9NW9NW8NW8NW7NW8NW6NW6NW5NW5NW4CalmCalmSW4
2 days agoCalmCalmCalm3NW4NW9NW11NW9W8NW10NW11NW12NW9NW6NW3CalmCalmCalmCalmCalmCalmCalmCalmNW5

Tide / Current Tables for Morro Beach, Estero Bay, California
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Morro Beach
Click for Map
Wed -- 03:58 AM PDT     -0.79 feet Low Tide
Wed -- 05:16 AM PDT     Moonrise
Wed -- 05:52 AM PDT     Sunrise
Wed -- 10:10 AM PDT     4.12 feet High Tide
Wed -- 03:32 PM PDT     0.89 feet Low Tide
Wed -- 07:00 PM PDT     Moonset
Wed -- 08:08 PM PDT     Sunset
Wed -- 09:48 PM PDT     6.16 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.41.90.5-0.5-0.8-0.40.41.62.83.74.13.93.32.41.5111.52.63.95.15.96.15.6

Tide / Current Tables for Port San Luis, Pacific Ocean, California
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Port San Luis
Click for Map
Wed -- 03:46 AM PDT     -0.79 feet Low Tide
Wed -- 05:16 AM PDT     Moonrise
Wed -- 05:53 AM PDT     Sunrise
Wed -- 10:01 AM PDT     4.06 feet High Tide
Wed -- 03:14 PM PDT     1.17 feet Low Tide
Wed -- 07:00 PM PDT     Moonset
Wed -- 08:07 PM PDT     Sunset
Wed -- 09:31 PM PDT     6.29 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.11.60.2-0.6-0.8-0.30.61.833.84.13.83.12.31.61.21.323.14.45.56.26.25.5

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.