Wednesday, March29, 2017 L-36.com


Marine Weather and Tides
Plymouth, CA

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:49AMSunset 7:26PM Wednesday March 29, 2017 7:39 PM PDT (02:39 UTC) Moonrise 7:08AMMoonset 8:31PM Illumination 7% Phase: Waxing Crescent; Moon at 3 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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PZZ531 San Francisco Bay South Of The Bay Bridge- 210 Pm Pdt Wed Mar 29 2017
.small craft advisory in effect until 9 pm pdt this evening...
Tonight..W winds 10 to 20 kt.
Thu..NW winds 10 to 20 kt. Slight chance of showers in the morning.
Thu night..NW winds 15 to 25 kt.
Fri..N winds 15 to 25 kt.
Fri night..NW winds 5 to 15 kt.
Sat..N winds 10 kt...becoming west.
Sun..W winds 5 kt...becoming northwest 5 to 15 kt.
Mon..NW winds 5 to 15 kt.
PZZ500 210 Pm Pdt Wed Mar 29 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... High pressure off the california coast will keep moderate northwest winds through this evening. Winds will briefly decrease tonight as the high weakens but will increase again Thursday through Friday as strong low pressure develops over the intermountain region. Long period swells will continue through this evening. A larger long-period swell is expected to arrive Sunday night and Monday.

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 292239
afdsto
area forecast discussion
national weather service sacramento ca
339 pm pdt Wed mar 29 2017

Synopsis
An approaching upper level disturbance will bring light rain for the
valley and light snow for elevations higher than 4000 feet. Gusty
north winds are likely Friday. Seasonably dry weather anticipated
for Saturday with chances for light rain in the sierra Sunday.

Short term (today through Saturday)
The upper level ridge over the eastern pacific is beginning to break
down as an upper level trough approaches from the northwest.

Satellite and radar imagery shows increasing clouds and some areas
of precipitation moving into the region across the northern
mountains and northern sacramento valley.

Forecast concerns this period include some light rain for the valley
and foothills with light snow for elevations higher than 4000 feet
starting tonight through Thursday night/Friday morning, and gusty
north winds on Friday. Model forecasts are in good agreement and
indicate the shortwave trough quickly moving through northern
california, which will start late tonight and last through Friday.

Little impacts are expected from the precipitation with only 1 to 2
inches of snow for the mountains and some wet roadways. A stronger
mid to lower level jet will be present across the area Friday, which
could translate to gusty north winds between 30 and 35 mph for the
valley and upwards of 45 mph for the higher terrain. Gusts will
start to diminish Friday evening.

Another upper level ridge will begin to build across the region and
will allow for dry seasonal weather to return with temperatures
between 5 and 10 degrees above normal.

.Extended discussion (Sunday through Wednesday)
the extended period will be somewhat unsettled with a couple
weather systems expected to move through the area. A shortwave
will deepen as it moves over the northwest us on Sunday, bringing
light precipitation to the norcal mountains Sunday evening through
the overnight hours. Temperatures will lower slightly by Monday,
and we could see a gusty northern wind event behind the trough.

Ridging builds again for the early part of the week with
temperatures remaining around 5 degrees warmer than normal. A
larger upper level trough looks to approach the pacific northwest
by the end of the extended period, bringing a wetter storm system
into the area beginning Wednesday evening. Hec

Aviation
MainlyVFR conditions. A brief weather system will
bring scattered -shra through tomorrow morning and possible MVFR
conditions to TAF sites after 11z tomorrow. Winds increasing to
sustained greater than 10-15 kt by 12z with gusts up to 20-25 kt
by 18z. Hec

Sto watches/warnings/advisories
None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SFXC1 - San Francisco Bay Reserve, CA 66 mi115 min W 9.9 71°F 1018 hPa53°F
PCOC1 - 9415144 - Port Chicago, CA 70 mi52 min WSW 11 G 15 63°F 58°F1018.8 hPa
AAMC1 - 9414750 - Alameda, CA 92 mi52 min W 6 G 9.9 61°F 62°F1020.6 hPa

Wind History for Port Chicago, CA
(wind in knots)    EDIT      (on/off)   Help
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W17
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S11
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G15
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Sacramento, Sacramento Mather Airport, CA25 mi50 minS 710.00 miPartly Cloudy68°F53°F60%1018.3 hPa

Wind History from MHR (wind in knots)
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Last 24hrN7SW3NW6N7------CalmCalmCalmCalmCalmCalmSE4SE4SE4SW4SW4S4SW4W3E3SE4S7
1 day agoNW6NW7N4N5------N6N6NW6N4CalmCalmN8N11N13
G20
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2 days ago------------------SE4SE4CalmCalmW3NE4--NW5NW7
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G20
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NW9
G17

Tide / Current Tables for Clarksburg, Sacramento River, California
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Clarksburg
Click for MapNote: These data apply only during low river stages.

Wed -- 02:31 AM PDT     0.19 feet Low Tide
Wed -- 06:55 AM PDT     Sunrise
Wed -- 07:22 AM PDT     3.07 feet High Tide
Wed -- 08:11 AM PDT     Moonrise
Wed -- 03:16 PM PDT     0.05 feet Low Tide
Wed -- 07:27 PM PDT     Sunset
Wed -- 08:08 PM PDT     2.76 feet High Tide
Wed -- 09:33 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.80.40.20.20.81.72.6332.82.31.71.10.60.20.10.20.81.72.52.82.72.31.8

Tide / Current Tables for Clarksburg #4, Sacramento River, California
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Clarksburg #4
Click for Map
Wed -- 02:32 AM PDT     0.19 feet Low Tide
Wed -- 06:55 AM PDT     Sunrise
Wed -- 07:22 AM PDT     3.06 feet High Tide
Wed -- 08:11 AM PDT     Moonrise
Wed -- 03:16 PM PDT     0.05 feet Low Tide
Wed -- 07:27 PM PDT     Sunset
Wed -- 08:08 PM PDT     2.75 feet High Tide
Wed -- 09:33 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.80.40.20.20.81.72.6332.72.31.71.10.60.20.10.20.81.72.42.72.72.31.8

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralWestCoast    EDIT
Geos

Wind Forecast for Sacramento, CA (22,6,7,8)
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Ground Weather Radar Station Sacramento, 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.