Friday, June23, 2017 L-36.com


Marine Weather and Tides
Plymouth, 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 5:38AMSunset 8:34PM Friday June 23, 2017 6:55 AM PDT (13:55 UTC) Moonrise 4:28AMMoonset 7:11PM Illumination 0% Phase: New Moon; Moon at 29 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- 308 Am Pdt Fri Jun 23 2017
Today..NW winds 5 to 15 kt.
Tonight..NW winds 5 to 15 kt. Patchy fog after midnight.
Sat..NW winds 5 to 15 kt. Patchy fog in the morning.
Sat night..W winds 5 to 15 kt.
Sun..W winds 10 to 20 kt.
Mon..W winds 10 kt.
Tue..SW winds 10 kt.
PZZ500 308 Am Pdt Fri Jun 23 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light southerly winds over the coastal waters today. Onshore winds increase later today and tonight through coastal gaps such as the golden gate gap and across the northern san francisco bay. Northwest winds return this weekend. Generally decreasing seas through the coming days.

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 231035
afdsto
area forecast discussion
national weather service sacramento ca
335 am pdt Fri jun 23 2017

Synopsis
Heat wave easing a bit in delta influenced areas due to increased
delta breeze. Heat wave continues elsewhere with widespread highs
over 100 degrees and warm nights today through Saturday.

Isolated afternoon thunderstorms possible over the mountains. Not
as hot next week.

Discussion
Another hot day today under building upper level ridge. Some
relief is in site however for the delta influenced areas thanks to
an increased delta breeze. Temperatures this morning running 7
degrees cooler at travis afb and 2 to 5 degrees cooler in the
sacramento and stockton areas. Main question for this area will
be how persistent delta push is through the day. Nam GFS guidance
does keep a moderate breeze going through the afternoon and fort
ord profiler showing marine layer up to about 1200 feet.

Satellite fog product and surface observations showing some
coastal stratus trickling into the bay area as well. Have lowered
daytime MAX temperatures a bit in delta influenced areas and
downgraded excessive heat warning in this area to a heat advisory.

Elsewhere, conditions expected to come in just a hot as Thursday
so kept up warnings advisories in place unchanged. A few isolated
thunderstorms popped up over the sierra crest on Thursday and
expect there may be a few here today south of tahoe. Little change
is expected in the overall forecast for Saturday so expect only
minor changes in temperatures. Exception should be the delta and
delta influences areas which should see a little more cooling
under a somewhat stronger delta breeze.

More significant changes in store for Sunday with upper ridge axis
forecast to shift into the great basin. Increased delta breeze and
cooler airmass should bring general cooling all areas. Southerly
flow aloft will continue instability and thunderstorm threat over
the sierra crest Sunday afternoon. Models hinting at a shortwave
disturbance pivoting up the back side of the ridge and across the
northwest corner of the state for a threat of afternoon
thunderstorms over the coast range crest. Cooling continues on
Monday as weak upper troughing moves over the coast. Daytime highs
Monday should be down to just a few degrees above normal. Stable
southwest flow aloft will bring dry conditions so should not see
any afternoon thunderstorm activity over the mountains.

.Extended discussion (Tuesday through Friday)
further cooling expected on Tuesday as weak trough moves across
the area. Models depicting a few showers across the northern
mountains but confidence is low and given limited moisture return,
have continued dry forecast. Upper flow becomes more zonal on
Wednesday into Thursday with high temperatures within a few
degrees of normal. Cooler overnight temperatures will continue the
relief from this week's heatwave. Delta breeze should be going
with further cooling across influenced areas. Ceo

Aviation
Vfr conditions expected at the TAF sites the next 24 hours.

Isolated thunderstorms possible over the northern sierra crest in
the afternoon. Southwest winds 15 to 30 kt through the
delta... Otherwise winds generally below 15 kt.

Sto watches warnings advisories
Heat advisory until 11 pm pdt Saturday for carquinez strait and
delta-clear lake southern lake county-motherlode-mountains
southwestern shasta county to northern lake county-northeast
foothills sacramento valley-northern san joaquin valley-shasta
lake area northern shasta county-west slope northern sierra
nevada-western plumas county lassen park.

Red flag warning until noon pdt today for central sacramento
valley in glenn, colusa, yuba, northern sutter, and butte county
below 1000 ft-eastern mendocino nf-eastern portion of
shasta trinity nf-lake county portion of lake-napa-sonoma unit-
northern sacramento valley to southern tehama county line below
1000 ft-northern sierra foothills from 1000 to 3000 ft. Includes
portions of shasta-trinity and butte units-southeast edge shasta-
trinity nf and western portions of tehama-glenn unit.

Excessive heat warning until 11 pm pdt Saturday for central
sacramento valley-northern sacramento valley-southern sacramento
valley.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SFXC1 - San Francisco Bay Reserve, CA 66 mi70 min WNW 12 63°F 1009 hPa58°F
PCOC1 - 9415144 - Port Chicago, CA 70 mi43 min W 21 G 23 61°F 70°F1010.2 hPa
AAMC1 - 9414750 - Alameda, CA 92 mi43 min NNE 1.9 G 5.1 58°F 66°F1012.1 hPa

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Sacramento Mather Airport, CA25 mi60 minSE 610.00 miClear70°F55°F60%1008.1 hPa

Wind History from MHR (wind in knots)
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Last 24hrCalmNW4W4W4N7W6NW7--NW7
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1 day agoS4S4SW4--W7SW5W5N4
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2 days agoS4SW7--CalmNW5CalmW3W4----S6
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Tide / Current Tables for Clarksburg, Sacramento River, California
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Clarksburg
Click for MapNote: These data apply only during low river stages.

Fri -- 12:13 AM PDT     0.66 feet Low Tide
Fri -- 05:03 AM PDT     3.53 feet High Tide
Fri -- 05:31 AM PDT     Moonrise
Fri -- 05:43 AM PDT     Sunrise
Fri -- 01:57 PM PDT     -0.30 feet Low Tide
Fri -- 07:06 PM PDT     2.48 feet High Tide
Fri -- 07:32 PM PDT     New Moon
Fri -- 08:13 PM PDT     Moonset
Fri -- 08:33 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.70.81.42.43.23.53.43.12.51.81.20.60.2-0.2-0.3-00.71.62.22.52.421.61.2

Tide / Current Tables for Clarksburg #4, Sacramento River, California
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Clarksburg #4
Click for Map
Fri -- 12:13 AM PDT     0.65 feet Low Tide
Fri -- 05:03 AM PDT     3.53 feet High Tide
Fri -- 05:31 AM PDT     Moonrise
Fri -- 05:43 AM PDT     Sunrise
Fri -- 01:57 PM PDT     -0.31 feet Low Tide
Fri -- 07:06 PM PDT     2.47 feet High Tide
Fri -- 07:32 PM PDT     New Moon
Fri -- 08:13 PM PDT     Moonset
Fri -- 08:33 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.70.81.42.43.23.53.43.12.51.81.20.60.1-0.2-0.3-00.71.52.22.52.421.61.2

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 (9,2,3,4)
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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.