Tuesday, May21, 2019 L-36.com


Marine Weather and Tides
Plymouth, 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 5:45AMSunset 8:15PM Tuesday May 21, 2019 4:35 PM PDT (23:35 UTC) Moonrise 10:13PMMoonset 7:08AM Illumination 91% Phase: Waning Gibbous; Moon at 18 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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PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 246 Pm Pdt Tue May 21 2019
.small craft advisory in effect through late tonight...
Rest of today..W winds 15 to 25 kt with gusts up to 30 kt.
Tonight..W winds 15 to 25 kt with gusts up to 30 kt.
Wed..W winds 5 to 15 kt.
Wed night..W winds 5 to 15 kt.
Thu..SW winds 5 to 15 kt.
Thu night..SW winds 15 to 25 kt with gusts up to 30 kt.
Fri..SW winds 10 to 20 kt with gusts up to 25 kt.
Sat..SW winds 5 to 15 kt.
PZZ500 246 Pm Pdt Tue May 21 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Rapidly building northwest swell will arrive this evening and overnight with seas in excess of 15 feet along with larger near shore breaking waves. Showers and isolated Thunderstorms will be possible overnight as one last system drops down the coast. Behind this boundary strong and gusty northerly winds will develop with gale warnings now posted for Wednesday across much of the outer waters along with the near shore waters from point arena to point reyes. Gale force winds and large nw swell will create hazardous conditions through midweek with moderate wind and seas persisting through the end of the week. A cool upper trough will keep unsettled weather over the region into the holiday weekend.


7 Day Forecast for Marine Location Near Plymouth, CA
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location: 38.48, -120.84     debug


Area Discussion for - Sacramento, CA
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Fxus66 ksto 212237
afdsto
area forecast discussion
national weather service sacramento ca
337 pm pdt Tue may 21 2019

Synopsis
A cool weather system will continue to bring showers and
thunderstorms and mountain snow into this evening. Below average
temperatures continue through the week with additional mountain
shower chances and some afternoon thunderstorms. There is the
potential for more widespread memorial day weekend precipitation.

Discussion
A cool upper level low pressure is moving southward across the
area bringing scattered showers and thunderstorms. The strongest
storm develop in tehama county and tracked into butte county.

Other showers and weaker thunderstorms are popping up over the
motherlode. There have been reports of small hail in placerville
and folsom. Thunderstorm activity could continue through the
evening before diminishing. Brief periods of heavy rain and large
amounts of small hail are the main threats.

Heavier snow showers could continue to bring slippery conditions
through early evening, so a winter weather advisory remains in
effect for the sierra and cascade ranges for elevations 5,500
feet and above through 8 pm. Scattered snow showers remain possible
afterward into early Wednesday morning with little additional
accumulation.

The upper low shifts into southern california and nevada on
Wednesday with flow aloft becoming northerly and continuing
through Thursday. Afternoon rain showers will continue over the
mountains and foothills, potentially with some afternoon
thunderstorms Thursday. Another system drops down Friday, bringing
afternoon showers and thunderstorms into the northern sacramento
valley and adjacent mountains and foothills. Temperatures should
gradually warm back into the 70s, which is still below average.

.Extended discussion (Saturday through Tuesday)
a low pressure system will drop southward through the pacific
northwest bringing showers across the area over the weekend.

Instability with the core of the low passing through will bring
the potential for afternoon thunderstorms. Snow levels should
remain mainly above pass levels, with accumulating snow limited to
high peaks. Monday will see lingering showers, especially over the
mountains and foothills. Below normal temperatures continue over
the weekend into Monday with high temps returning to near normal
by Tuesday.Ek

Aviation
Nwly flow alf as upr low apchs tda, movg S thru intr norcal tngt
into Wed mrng. Areas of MVFR ifr conds poss in pcpn nxt 24 hrs,
mnly ovr fthls and mtns. Isold TSTM poss btwn 18z-03z. In cntrl
vly, areas sly sfc wnd gsts to 25 kts, and ovr hyr trrn w-nw sfc
wnd gsts up to 35 kts poss til arnd 00z wed.

Sto watches warnings advisories
Winter weather advisory until 8 pm pdt this evening for west
slope northern sierra nevada-western plumas county lassen park.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SFXC1 - San Francisco Bay Reserve, CA 66 mi111 min W 17 62°F 1011 hPa47°F
PCOC1 - 9415144 - Port Chicago, CA 70 mi36 min W 20 G 28 1011.4 hPa (-1.0)
AAMC1 - 9414750 - Alameda, CA 92 mi42 min W 16 G 21 57°F 62°F1013.2 hPa

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Sacramento Mather Airport, CA25 mi2.8 hrsWSW 1310.00 miPartly Cloudy64°F46°F52%1010.5 hPa

Wind History from MHR (wind in knots)
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SW9S7SE7S8------SE7S6S9
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1 day ago--SW13CalmNE6CalmE3--------------CalmE4CalmCalmCalmCalmCalmCalm--SW7
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2 days agoCalmSE3E11SE10SE9--SE5------------S8S5SE7SE8SW13
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Tide / Current Tables for Sacramento #4, Sacramento River, California
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Sacramento #4
Click for Map
Tue -- 04:29 AM PDT     0.75 feet Low Tide
Tue -- 05:49 AM PDT     Sunrise
Tue -- 08:10 AM PDT     Moonset
Tue -- 08:33 AM PDT     3.09 feet High Tide
Tue -- 05:55 PM PDT     -0.23 feet Low Tide
Tue -- 08:16 PM PDT     Sunset
Tue -- 11:00 PM PDT     2.39 feet High Tide
Tue -- 11:15 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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21.61.20.90.80.81.42.333.12.92.521.50.90.50.1-0.1-0.20.10.81.62.22.4

Tide / Current Tables for Clarksburg #4, Sacramento River, California
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Clarksburg #4
Click for Map
Tue -- 02:59 AM PDT     0.75 feet Low Tide
Tue -- 05:50 AM PDT     Sunrise
Tue -- 07:24 AM PDT     3.09 feet High Tide
Tue -- 08:11 AM PDT     Moonset
Tue -- 04:25 PM PDT     -0.23 feet Low Tide
Tue -- 08:15 PM PDT     Sunset
Tue -- 09:51 PM PDT     2.39 feet High Tide
Tue -- 11:15 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.51.10.80.811.72.63.13.12.82.41.91.30.80.3-0-0.2-0.20.31.11.72.22.42.2

Weather Map and Satellite Images
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wmap_P
GOES Local Image of CentralWestCoast    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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Sacramento, CA (19,4,5,8)
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Ground Weather Radar Station Sacramento, 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.