Tuesday, November21, 2017 L-36.com


Marine Weather and Tides
Discovery Bay, CA

Version 3.4
What's New / NOTES
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.
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 6:52AMSunset 4:51PM Tuesday November 21, 2017 2:22 AM PST (10:22 UTC) Moonrise 9:30AMMoonset 7:37PM Illumination 8% 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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PZZ530 San Pablo Bay Suisun Bay The West Delta And San Francisco Bay North Of The Bay Bridge- 217 Am Pst Tue Nov 21 2017
Today..NE winds 5 to 15 kt.
Tonight..NE winds 10 kt.
Wed..NE winds 10 kt.
Wed night..NW winds 10 kt.
Thanksgiving day..W winds 5 to 15 kt.
Fri..N winds 10 kt.
Sat..SE winds 5 kt...becoming sw. Slight chance of rain.
PZZ500 217 Am Pst Tue Nov 21 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... As a ridge builds in from the south, a split windflow pattern is developing, with winds out of the north over the southern waters and out of the south over the northern waters. Winds will remain generally light with more moderate winds in the far northern waters. Chances of rain will return to the northern waters towards the end of the week. West to northwest swell will increase mid-week.

7 Day Forecast for Marine Location Near Discovery Bay, CA
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location: 37.89, -121.49     debug


Area Discussion for - Sacramento, CA
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Fxus66 ksto 202358
afdsto
area forecast discussion
national weather service sacramento ca
358 pm pst Mon nov 20 2017

Synopsis
Weather system will continue to bring chances of rain tonight,
mainly from i80 northward and in the mountains. Mainly dry
weather is then expected through Wednesday with light rain
chances for the northern mountains. Another weak system will bring
light rain on thanksgiving into Friday, mainly north of i80.

Discussion
A weak system with an ample moisture supply from a pacific plume
but little else is moving through northern california. Some
locations in the mountains of shasta and western plumas counties
have received as much as an inch and a third. The northern
sacramento valley has up to a half inch so far. Areas south of
i80 have seen much less, for the southern sacramento valley
generally a trace to a few hundredths, virtually northing for the
san joaquin valley. Snow levels are high (over 10000 feet) with
this mild system.

Light precipitation will continue into the early evening, but
will drop off in intensity and coverage fairly quickly. Some
overnight mist could develop, though cloud coverage will limit
dense fog development. Have included just a narrow band of some
patchy fog for Tuesday morning for the eastern suburbs of
sacramento and banking up against the foothills just east of
stockton and modesto.

Dry weather returns for most of the area Tuesday and Wednesday as
high pressure ridging strengthens over the west ahead of the
deepening trough over the gulf of alaska. A few light showers
remain possible over shasta county, though. Temperatures will be
unseasonably mild with upper 60s and lower 70s expected through
the central valley (around 10 degrees above average). Fog could be
more extensive Wednesday morning, though northerly winds should
limit this in the valley to around sacramento southward, where
light southeast winds calm conditions are expected.

Another weak system will move through the ridge on thanksgiving
and may bring some light rain to portions of the area, again
mainly north of i80. This system is expected to have less rainfall
than the current system. Snow levels again look high (over 10000
feet), so snow will not be an issue for holiday travel.

Temperatures on thanksgiving will be quite mild, reaching low 70s
in portion of the valley. While warm, these are not record levels.

For downtown sacramento, the record high on Thursday is 80
degrees. Ek
.Extended discussion (Friday through Monday)
a frontal boundary will be setting up over norcal for the start of
the extended period. This will bring some shower chances with the
best chances north of i-80 and mainly in the higher elevations.

Snow levels will remain high and travel impact should be low for
the weekend but you may have to deal with wet roads at times. The
trough drops south on Monday and this will bring a better chance
for precip across the area. There is some disagreement
on trough placement but there is good agreement on rain chances.

We will also see lower snow levels and they will likely fall
below pass level. Mild temperatures will continue for the start of
the period but will return to near normal by early next week.

-cjm

Aviation
Areas of MVFR ifr will be possible through 03z Tuesday due to
low cig and low vis mainly in scattered showers. Patchy fog and
low CIGS possible after 12z Tuesday at the southern terminals,
MVFR ifr possible. Improving conditions after 17z Tuesday. Winds
remain under 10 knots.

Sto watches warnings advisories
None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 23 mi64 min ESE 2.9 G 5.1 55°F 1022.3 hPa
PCOC1 - 9415144 - Port Chicago, CA 31 mi52 min ENE 9.9 G 13 55°F 58°F1021.9 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 35 mi52 min E 6 G 11 54°F 58°F1022.2 hPa54°F
SFXC1 - San Francisco Bay Reserve, CA 36 mi97 min E 8.9 52°F 1021 hPa51°F
LNDC1 42 mi52 min ESE 1 G 2.9 58°F 1020.4 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 43 mi52 min ESE 19 G 24 55°F 1020.3 hPa
AAMC1 - 9414750 - Alameda, CA 44 mi52 min Calm G 0 57°F 58°F1021 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 45 mi52 min NNW 2.9 G 5.1
OBXC1 45 mi52 min 58°F 56°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 45 mi52 min NNW 2.9 G 4.1 58°F 1020.4 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 46 mi52 min ENE 1.9 G 7 60°F 1020.7 hPa
RTYC1 - 9414523 - Redwood City, CA 47 mi52 min SW 1 G 1 57°F 60°F1021 hPa
PXSC1 48 mi52 min 59°F 55°F
RCMC1 - 9414863 - Richmond, CA 49 mi52 min ENE 4.1 G 8 58°F 58°F1020.4 hPa

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Stockton, Stockton Metropolitan Airport, CA13 mi27 minW 65.00 miFog/Mist53°F52°F96%1022 hPa
Livermore, Livermore Municipal Airport, CA22 mi29 minE 85.00 miFog/Mist52°F50°F93%1021.2 hPa

Wind History from SCK (wind in knots)
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Last 24hrCalmE5E7E6SE5SE6SE10SE9S11S6S3E5E5SE4CalmCalmNE3CalmW3NW4N8NW6NW4W6
1 day agoCalmCalmW4W4N3CalmCalm3NW4NW3NE5W4CalmW6W6W4CalmCalmNW3CalmCalmS4CalmE3
2 days agoW7W5W3W4SW3W4W5NW3CalmCalmCalm3SW3CalmW3CalmW3CalmSW4CalmCalmCalmCalmCalm

Tide / Current Tables for Borden Highway Bridge, Middle River, San Joaquin River, California
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Borden Highway Bridge
Click for Map
Tue -- 02:55 AM PST     -0.12 feet Low Tide
Tue -- 06:53 AM PST     Sunrise
Tue -- 09:20 AM PST     2.58 feet High Tide
Tue -- 09:29 AM PST     Moonrise
Tue -- 02:14 PM PST     1.23 feet Low Tide
Tue -- 04:50 PM PST     Sunset
Tue -- 07:26 PM PST     3.24 feet High Tide
Tue -- 07:37 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.80.3-0-0.10.10.61.21.92.32.62.52.21.81.41.21.31.72.32.93.23.22.92.41.8

Tide / Current Tables for Brandt Bridge, San Joaquin River, California Current
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Brandt Bridge
Click for Map
Tue -- 12:40 AM PST     -1.14 knots Max Ebb
Tue -- 05:13 AM PST     0.00 knots Slack
Tue -- 06:52 AM PST     Sunrise
Tue -- 08:15 AM PST     0.56 knots Max Flood
Tue -- 09:28 AM PST     Moonrise
Tue -- 11:00 AM PST     -0.00 knots Slack
Tue -- 01:41 PM PST     -0.42 knots Max Ebb
Tue -- 04:15 PM PST     0.00 knots Slack
Tue -- 04:49 PM PST     Sunset
Tue -- 06:44 PM PST     0.60 knots Max Flood
Tue -- 07:36 PM PST     Moonset
Tue -- 09:04 PM PST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.1-1.1-1.1-0.9-0.5-0.10.30.50.60.50.30-0.3-0.4-0.4-0.3-0.10.20.50.60.40-0.4-0.8

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 (5,6,7,8)
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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.