Thursday, April19, 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 6:22AMSunset 7:40PM Thursday April 19, 2018 2:34 AM PDT (09:34 UTC) Moonrise 8:22AMMoonset 10:49PM Illumination 16% Phase: Waxing Crescent; Moon at 4 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- 800 Pm Pdt Wed Apr 18 2018
.small craft advisory in effect through late Thursday night...
Tonight..NW winds 15 to 25 kt. Strongest western portion. Combined seas 5 to 7 ft dominant period 11 seconds. Chance of showers in the evening, then showers and slight chance of Thunderstorms.
Thu..NW winds 15 to 25 kt with local gusts to 30 kt. Strongest western portion. Combined seas 6 to 8 ft dominant period 15 seconds, building to 8 to 9 ft dominant period 14 seconds in the afternoon.
Thu night..NW winds 20 to 30 kt, becoming 15 to 20 kt with gusts to 25 kt after midnight. Combined seas 8 to 10 ft dominant period 12 seconds.
Fri..NW winds 15 to 20 kt with gusts to 25 kt. Combined seas 7 to 8 ft dominant period 12 seconds.
Fri night..NW winds 15 to 25 kt with gusts to 30 kt. Combined seas 7 to 8 ft dominant period 11 seconds, building to 9 ft dominant period 11 seconds after midnight.
Sat..NW winds 15 to 25 kt, becoming 10 to 20 kt in the afternoon. Combined seas 8 to 10 ft.
Sat night..NW winds 10 to 20 kt with gusts to 25 kt. Wind waves 2 to 4 ft. NW swell 7 to 8 ft.
Sun..NW winds 10 to 20 kt with gusts to 25 kt. Wind waves 2 to 4 ft. NW swell 7 to 9 ft.
Mon..NW winds 10 to 20 kt. Wind waves 2 to 3 ft. NW swell 6 to 8 ft.
PZZ600 800 Pm Pdt Wed Apr 18 2018
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 03z...or 8 pm pdt...a 1027 mb surface high was about 900 nm W of point conception. A 1017 mb low was located about 150 nm nw of san francisco with a frontal system extending to the south. This front will move across the waters late tonight and Thu morning. Gusty W to nw winds with steep short-period seas will affect the coastal waters tonight through late Thu night. There will also be slight chance of Thunderstorms over the northern waters later tonight.

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 190902
afdlox
area forecast discussion
national weather service los angeles oxnard ca
202 am pdt Thu apr 19 2018

Synopsis 19 1256 am.

A weakening cold front will bring some showers and mountain snow
showers with gusty winds and cooler temperatures to the area
today. High pressure will then build in for dry and warmer
conditions Friday, with above normal temperatures expected away
from the coast over the weekend into early next week. Night to
morning coastal low clouds and fog are likely this weekend.

Short term (tdy-sat) 19 201 am.

Doppler radar indicated cold front band of moderate to locally
heavy rain was pushing into the central coast around 2 am this
morning. Satellite imagery continues to show the associated upper
level low pressure system diving south off the central coast. A
100+ knot jet streak is visible due to enhanced high cloud cover
about 180 miles southwest of point conception. Down sloping off of
the transverse ranges of sba and vta counties combined with the
upper level support outrunning the surface cold front is expected
to lead to rapid weakening of the main rain band early this
morning with only isolated to scattered showers continuing into
vta and la counties later this morning. Wrap around moisture may
support showers lingering into the afternoon across the north
slopes of la and vta county. This is an unusually cold system for
late april with snow levels falling down to around 4000 feet at
this morning before likely rising some with assistance of the
spring Sun angle by the afternoon. An isolated thunderstorm or two
can't be ruled out with this cold and dynamic system, even though
available moisture is somewhat lacking. This threat is slightly
higher with the rain band early this morning, transition to
interior mountains by this afternoon. Rain and snowfall amounts
are expected to be generally light, except with the more organized
rain band pushing into the central coast. There rainfall amounts
will generally be less than one third of an inch, however local
one half inch plus amounts are possible in areas affected by
heavier showers. Snowfall up to around an inch is possible, mainly
about 4000 feet in sba county into northern slopes of vta and la
county. Fairly widespread onshore to northwest winds are expected
with this system later this afternoon into this evening,
transitioning more northerly tonight (see our npwlox product for
the latest details).

A ridge of high pressure is expected to build in rapidly behind
this system with h5 heights climbing dramatically from around 560
dm this afternoon to 580 dm by Friday afternoon. Supporting a
transition from widespread highs in the 60s today to highs in the
70s Friday. It looks like a fairly typical may pattern Saturday a
strong thermal or temperature gradient from the coast to inland
with highs in the 60s to around 70 at the coast to well into the
80s warmer coastal valleys into the interior. Breezy winds are
likely for wind prone interior areas and southwest sba county by
Saturday evening. A moderate eddy will likely help to spin up low
clouds and patchy fog for typical areas of la and possibly vta
county by Saturday morning.

Long term (sun-wed) 19 125 am.

Above average confidence in the forecast through Monday with below
average confidence for the remainder of the extended period.

Flat ridging aloft will likely continue through Monday and may
last through Wednesday or so. Model guidance is in agreement that
at least weak troughing aloft will develop sometime later next
week.

With this setup above average temperatures will likely continue
away from the coast with low clouds and closer to normal
temperatures more likely closer to the coast through Tuesday or
Wednesday. Breezy onshore winds are likely by the late afternoon
or early evening each day for far interior areas. Cooler
conditions are the best bet for interior areas for the middle of
next week with the potential for increasing clouds.

Aviation 19 0008z.

At 2232z at klax, the marine layer was 800 feet deep. The top of
the inversion was at 1400 feet with a temperature of 14c.

Good confidence in tafs through 09z. Lower confidence after 09z
with a 30 percent chc of MVFR CIGS 09z-17z. There is a 10 percent
chc of a thunderstorm over kprb, ksbp and ksmx 11z-15z.

Klax... High confidence inVFR conds through 09z. There is a 30
percent chc of bkn025 09z-16z. There is a 10 percent chc -shra
15z-19z. Good confidence in wind forecast.

Kbur... Good confidence in taf. There is a 20% chance of MVFR cigs
after 12z-16z. There is a 10 percent chc -shra 15z-19z.

Marine 18 708 pm.

Generally high confidence in small craft advisory (sca) level
winds developing across all coastal waters tonight. SCA winds and
seas are then expected through late Thu night, although may drop
below SCA levels in some areas late tonight Thu morning.

Steep short-period seas are expected later today through at least
thu night.

Sca winds are expected across the outer waters Fri afternoon or
evening through Sat evening, and possibly into Sunday.

Lox watches warnings advisories
Ca... Wind advisory in effect from 1 pm this afternoon to 9 pm pdt
this evening for zones 34>36-51. (see laxnpwlox).

Wind advisory in effect from 1 pm this afternoon to 3 am pdt
Friday for zones 39>41-52-87. (see laxnpwlox).

Wind advisory in effect from 4 pm this afternoon to 3 am pdt
Friday for zones 53-54. (see laxnpwlox).

Wind advisory in effect from 7 am this morning to 3 am pdt
Friday for zone 59. (see laxnpwlox).

Pz... Small craft advisory in effect until 3 am pdt Friday for
zones 645-650-655-670-673-676. (see laxmwwlox).

Hazard potential outlook (sat-wed)
No significant hazards expected.

Public... Munroe
aviation... Rorke
marine... Sweet sirard
synopsis... Munroe sirard
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46215 - Diablo Canyon, CA (076) 13 mi38 min 51°F4 ft
PSLC1 - 9412110 - Port San Luis, CA 18 mi53 min Calm G 1 49°F 51°F1017.3 hPa
CPXC1 18 mi35 min N 5.1 G 6 47°F 1017.2 hPa43°F
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 30 mi45 min ENE 9.7 G 12 51°F 54°F5 ft1016.1 hPa (-1.2)

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 mi39 minN 010.00 miLight Rain47°F41°F80%1016.5 hPa

Wind History from SBP (wind in knots)
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Last 24hrCalmE3E4E4SE4CalmSE3NW4W43NW19N15NW17NW15NW15NW13
G20
NW12NW7W3CalmCalmSE3E3Calm
1 day agoW3CalmCalmCalmN9N5CalmCalmN7N6N8N9
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NW19NW14NW13NW13CalmW3Calm3E3
2 days agoCalmCalmCalmSE5CalmS4CalmS5NW12NW11W11
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Tide / Current Tables for Morro Beach, Estero Bay, California
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Morro Beach
Click for Map
Thu -- 12:26 AM PDT     5.25 feet High Tide
Thu -- 06:25 AM PDT     Sunrise
Thu -- 07:34 AM PDT     -0.42 feet Low Tide
Thu -- 09:22 AM PDT     Moonrise
Thu -- 02:03 PM PDT     3.33 feet High Tide
Thu -- 06:52 PM PDT     1.84 feet Low Tide
Thu -- 07:39 PM PDT     Sunset
Thu -- 11:49 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.25.24.63.62.41.20.2-0.3-0.40.10.81.72.63.13.33.22.82.321.82.12.63.34.1

Tide / Current Tables for Port San Luis, Pacific Ocean, California
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Port San Luis
Click for Map
Thu -- 12:18 AM PDT     5.49 feet High Tide
Thu -- 06:25 AM PDT     Sunrise
Thu -- 07:31 AM PDT     -0.61 feet Low Tide
Thu -- 09:22 AM PDT     Moonrise
Thu -- 02:09 PM PDT     3.54 feet High Tide
Thu -- 06:50 PM PDT     2.10 feet Low Tide
Thu -- 07:38 PM PDT     Sunset
Thu -- 11:48 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.55.44.73.62.310-0.5-0.6-0.10.81.82.73.33.53.432.62.22.12.32.93.74.5

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 (5,6,7,8)
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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.