Tuesday, January21, 2020
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Marine Weather and Tides
Pittsburg, CA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 7:18AMSunset 5:18PM Monday January 20, 2020 9:44 PM PST (05:44 UTC) Moonrise 3:37AMMoonset 1:48PM Illumination 16% Phase: Waning Crescent; Moon at 26 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- 810 Pm Pst Mon Jan 20 2020
Tonight..S winds 10 to 20 kt. A slight chance of showers.
Tue..S winds 10 to 20 kt with gusts up to 30 kt. Showers.
Tue night..NW winds 5 to 10 kt. A chance of showers.
Wed..NE winds 5 to 10 kt.
Wed night..NE winds up to 10 kt.
Thu..NE winds up to 10 kt.
Thu night..W winds 5 to 10 kt.
Fri..W winds 5 to 10 kt. A chance of rain.
Sat..S winds up to 10 kt. A chance of rain.
PZZ500 810 Pm Pst Mon Jan 20 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Southerly winds will gradually increase tonight ahead of an approaching cold front that will push through the coastal waters on Tuesday. A longer period northwest swell will also begin to build over the waters tonight before peaking midweek. This will generate hazardous seas conditions for smaller vessels. Another long period northwest swell will then arrive late week.


7 Day Forecast for Marine Location Near Pittsburg, CA
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location: 38.05, -121.87     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 202243 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 243 PM PST Mon Jan 20 2020

Synopsis. Widespread precipitation chances return Tuesday and Tuesday night night with a few inches of snow possible at pass level. Dry conditions return for the end of the week, then another storm is possible by late weekend.

Discussion. Disturbance passing over central California is keeping clouds over the area this afternoon, but no precipitation. Skies will remain mostly cloudy through the evening. The next system will pass through Tuesday with light valley showers and mountain snow. The heaviest rainfall will be over the southern Cascade Range including the Redding area where 0.50 to 1.00 inches will be possible. Less than 0.25 of rain is expected over the southern Sacramento Valley southward. This system will be warmer than last weeks storm with snow level generally above 5000 feet. Expect 3 to 5 inches of snow above 5000 feet over Interstate 80 with the best chances Tuesday afternoon. Higher Sierra peaks could see up to 8 inches. The higher snow levels and low snowfall rates should decrease travel impacts, although still could see chain controls. Dry and warmer conditions Wednesday through Friday, as upper ridge builds in from the Pacific.

EXTENDED DISCUSSION (Friday THROUGH Monday). A low-amplitude shortwave will cross the Oregon/California border early Friday keeping a few showers around over Shasta County. In its wake, heights gradually build with broad southwesterly flow aloft prevailing through the first half of Saturday. Then the focus shifts toward the next system which may be a bit more impactful. While the guidance continues to struggle with the timing and magnitude of the approaching shortwave, there is agreement upon the return of wet weather late Saturday into Sunday. ECMWF ensemble probabilities exhibit higher values than the GEFS members so some ensemble spread remains. The current thinking suggest decent rainfall amounts over the Valley, foothills, and Delta with moderate snowfall accumulations across the Sierra-Cascade range, generally around pass level and above. It is too early to suggest concrete amounts, but do expect some mountain travel impacts. Thus, it continues to bear watching as models iron out their differences. Residual shower activity to linger into Monday morning before an upstream ridge moves in to start next week. ~BRO

AVIATION. A Pacific system will spread rain and mountain snow after 06Z Tuesday; mainly MVFR/IFR conditions are expected in the Valley with IFR/LIFR over the mountains. Initial winds are expected to be around 5 knots or less, while south winds will increase after 10Z Tuesday. Conditions become locally breezy in the afternoon over the northern Sacramento Valley with gusts up to 20 to 30 knots at times.

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 1 mi63 min 47°F 1017.2 hPa
PCOC1 - 9415144 - Port Chicago, CA 9 mi57 min 49°F
SFXC1 - San Francisco Bay Reserve, CA 13 mi120 min SE 5.1
UPBC1 13 mi117 min ENE 5.1 G 7
MZXC1 - 9415102 - Martinez-Amorco CA 14 mi63 min 48°F 49°F1017.3 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 21 mi57 min 50°F 1017.1 hPa
LNDC1 28 mi63 min 52°F 1017.2 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 28 mi57 min 54°F 1017.7 hPa
OBXC1 30 mi63 min 51°F 46°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 30 mi63 min 51°F 1017.4 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 30 mi117 min S 4.1 G 5.1
AAMC1 - 9414750 - Alameda, CA 30 mi57 min 52°F
RCMC1 - 9414863 - Richmond, CA 30 mi57 min 52°F
TIBC1 - Tiburon Pier, San Francisco Bay, CA 32 mi88 min SW 4.1 51°F 1017 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 33 mi57 min 54°F 1016.3 hPa
PXSC1 33 mi57 min 55°F 47°F
FTPC1 - 9414290 - San Francisco, CA 36 mi63 min 51°F 53°F1017.4 hPa
RTYC1 - 9414523 - Redwood City, CA 42 mi63 min 52°F 52°F1017.7 hPa
46237 - San Francisco Bar, CA (142) 44 mi45 min 53°F8 ft

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Concord, Buchanan Field, CA11 mi52 minSSE 36.00 miOvercast with Haze48°F43°F83%1016 hPa
Fairfield / Travis Air Force Base, CA16 mi47 minN 03.00 miFog/Mist44°F40°F89%1018 hPa
Vacaville Nut Tree Airport, CA23 mi52 minSW 34.00 miFog/Mist46°F43°F89%1017.5 hPa
Napa, Napa County Airport, CA24 mi51 minN 010.00 miFair46°F43°F89%1016.5 hPa
Livermore, Livermore Municipal Airport, CA24 mi52 minN 08.00 miMostly Cloudy48°F43°F83%1017.2 hPa

Link to 5 minute data for KCCR

Wind History from CCR (wind in knots)
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Last 24hrCalmCalmW3S4N4NE4N4NW5NW4CalmSE3N3CalmCalmCalmCalmCalmN3NW3CalmCalmN3CalmS3
1 day agoE3E4E3CalmNE3E5E4CalmNW6NW6NW6N6NE8NE8NE9NE9----NE6NE8NE7CalmCalmCalm
2 days agoCalmCalmSE4CalmCalmNE3CalmCalm3NE4CalmE4NE5NE6NE9NE6NE7E8NE8E5E3SE3SE4E5

Tide / Current Tables for Pittsburg, New York Slough, Suisun Bay, California
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Pittsburg
Click for Map
Tue -- 12:44 AM PST     3.22 feet High Tide
Tue -- 04:40 AM PST     Moonrise
Tue -- 05:52 AM PST     1.56 feet Low Tide
Tue -- 07:19 AM PST     Sunrise
Tue -- 11:52 AM PST     4.50 feet High Tide
Tue -- 02:33 PM PST     Moonset
Tue -- 05:17 PM PST     Sunset
Tue -- 07:42 PM PST     -0.29 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.13.22.92.521.71.61.82.43.23.94.44.54.33.72.821.10.4-0.2-0.30.10.91.9

Tide / Current Tables for Chain Island .7 mi SW, Sacramento River, California Current
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Chain Island .7 mi SW
Click for Map
Tue -- 02:47 AM PST     -0.00 knots Slack
Tue -- 04:40 AM PST     Moonrise
Tue -- 05:10 AM PST     -0.81 knots Max Ebb
Tue -- 07:19 AM PST     0.00 knots Slack
Tue -- 07:19 AM PST     Sunrise
Tue -- 10:29 AM PST     1.41 knots Max Flood
Tue -- 01:59 PM PST     -0.00 knots Slack
Tue -- 02:33 PM PST     Moonset
Tue -- 05:17 PM PST     Sunset
Tue -- 06:07 PM PST     -1.88 knots Max Ebb
Tue -- 09:46 PM PST     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.10.90.4-0.1-0.6-0.8-0.7-0.20.51.11.41.41.10.6-0-0.8-1.3-1.7-1.9-1.7-1.3-0.50.10.7

Weather Map
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wmap_P
GEOS 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 (0,6,7,8)
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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 numerous 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.