Thursday, January18, 2018 L-36.com


Marine Weather and Tides
Pittsburg, 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 7:19AMSunset 5:17PM Thursday January 18, 2018 5:33 AM PST (13:33 UTC) Moonrise 8:22AMMoonset 7:00PM Illumination 3% Phase: Waxing Crescent; Moon at 2 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- 222 Am Pst Thu Jan 18 2018
Today..SW winds 5 to 15 kt. Chance of rain.
Tonight..W winds 5 to 15 kt. Chance of rain in the evening, then chance of showers after midnight.
Fri..NW winds 5 to 15 kt. Chance of showers.
Fri night..NW winds 10 to 20 kt. Slight chance of showers.
Sat..NW winds 5 to 15 kt. Slight chance of showers in the morning.
Sun..E winds 5 kt...becoming S 5 to 15 kt. Chance of rain.
Mon..SW winds 10 kt...becoming north. Chance of showers.
PZZ500 222 Am Pst Thu Jan 18 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A large long period westerly swell will continue to impact the coastal waters through the remainder of the week. This swell will bring hazardous seas to the region as well as large breaking waves to the coastline through Friday. A cold front will pass over the waters later this morning, switching winds out of the west or northwest by this afternoon or evening. Rain chances will increase through the morning and will continue through the weekend.

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 181215
afdsto
area forecast discussion
national weather service sacramento ca
415 am pst Thu jan 18 2018

Synopsis
Active weather pattern continues with a colder storm system
arriving today thru Friday. A similarly cold storm system is
expected early next week.

Discussion
Latest radar imagery shows the main frontal band precipitation
moving across northwest california. Stratus covers the entire
central valley up to redding and this has limited dense fog
formation overnight with all surface observations reporting
visibility above 1 mile.

Little change to overall forecast timing or precipitation amounts.

Precipitation is expected to extend southward to the sacramento
region, and interstate 80 in the sierra, by mid to late
afternoon. Snow levels will be considerably lower with this
system, lowering to around 2500-3500 feet by early Friday.

The main impactful weather from the storm will result in
precipitation approaching an inch for the north valley and
12-18 inches of snow for the northern sierra through Friday.

Latest forecast plumes indicate high likelihood of 6-8 inches of
snow accumulation at kblu with the heaviest snowfall occurring
this evening into early Friday morning as the front transits the
area. Travel for the i-80 and us 50 corridors will become
difficult. Gusty winds between 25 and 35 mph could make travel
difficult for higher profile vehicles.

The base of the trough swings through Friday afternoon into early
Friday evening with precipitation then tapering off. A short-wave
ridge of high pressure will develop Saturday with the potential
for clearing skies and patchy fog for the valley before the next
weather making system arrives Sunday.

.Extended discussion (Monday through Thursday)
pacific frontal system will continue to push south of the
forecast area on Monday. The valley is expected to see about a
tenth to a quarter inch of additional QPF amounts, whereas the
mountains could receive up to half an inch. Precipitation is
forecast to end across most locations late Monday, although
lingering activity could persist over higher terrain. Additional
snow amounts could approach 4-6 inches during this timeframe.

Late Monday into early Tuesday should be a transition period
before the next system moves in. Forecast models indicate a deep
trough moving along the west coast by midweek. This upper system
will bring another round of widespread precipitation, mountain
snow, and breezy winds. Guidance solutions differ regarding the
overall progression of the system, with the latest ECMWF run being
the fastest output. Nevertheless, precipitation could approach
across the northern mountains as early as Tuesday afternoon and
then spread southward across the entire CWA on Wednesday.

Aviation
MVFR ifr conditions, local ifr, due to low ceilings br will
continue early this morning. A pacific storm will bring
precipitation after 12z Thursday with ifr conditions over the
sierra, and MVFR ifr conditions in the central valley. Could see a
few gusts to 20 kts in the northern valley, higher gusts over the
mountains.

Sto watches warnings advisories
Winter storm warning from noon today to 4 pm pst Friday for west
slope northern sierra nevada-western plumas county lassen park.

Winter weather advisory from 7 pm this evening to 4 pm pst
Friday for mountains southwestern shasta county to northern lake
county-shasta lake area northern shasta county.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 1 mi46 min SE 8.9 G 11 51°F 1019.5 hPa
PCOC1 - 9415144 - Port Chicago, CA 9 mi46 min E 1.9 G 1.9 51°F 52°F1019.5 hPa
SFXC1 - San Francisco Bay Reserve, CA 13 mi109 min SSE 2.9 51°F 1020 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 14 mi46 min E 1 G 2.9 51°F 52°F1019.8 hPa51°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 21 mi46 min E 8 G 8.9 51°F 1019.5 hPa
LNDC1 28 mi46 min S 7 G 8.9 53°F 1019.4 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 28 mi46 min SW 4.1 G 6 54°F 1020 hPa
RCMC1 - 9414863 - Richmond, CA 30 mi52 min SSW 1.9 G 4.1 53°F 54°F1019.5 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 30 mi46 min SSE 9.9 G 12
AAMC1 - 9414750 - Alameda, CA 30 mi52 min SE 6 G 9.9 52°F 55°F1019.6 hPa
OBXC1 30 mi46 min 53°F 53°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 30 mi46 min S 8.9 G 12 52°F 1019.4 hPa
PXSC1 33 mi46 min 54°F 54°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 33 mi46 min SSE 8.9 G 13 53°F 1018.3 hPa
FTPC1 - 9414290 - San Francisco, CA 36 mi52 min WSW 1.9 G 5.1 52°F 54°F1019.9 hPa
RTYC1 - 9414523 - Redwood City, CA 42 mi46 min SE 4.1 G 6 51°F 56°F1020.4 hPa
46237 - San Francisco Bar, CA (142) 44 mi64 min 54°F9 ft

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Concord, Buchanan Field, CA11 mi41 minS 33.00 miFog/Mist52°F50°F93%1018.2 hPa
Fairfield / Travis Air Force Base, CA16 mi96 minS 44.00 miFog/Mist52°F51°F100%1020.7 hPa
Vacaville Nut Tree Airport, CA23 mi41 minS 62.50 miFog/Mist51°F51°F100%1020 hPa
Napa, Napa County Airport, CA24 mi40 minN 04.00 miFog/Mist50°F50°F100%1018.9 hPa
Livermore, Livermore Municipal Airport, CA24 mi41 minNE 33.00 miFog/Mist50°F50°F100%1019.8 hPa

Wind History from CCR (wind in knots)
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Last 24hrCalmCalmS3CalmN6CalmN6NE4NE5NE3N6N4NE4NE3CalmNW6CalmCalmS7SW6CalmSE5SE5S3
1 day agoNE4NE4NE3CalmCalmNE5NE6NE8NE4NE6E3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmSE3CalmCalm
2 days agoN3NE4CalmCalm3CalmCalmN6NW5N7N4CalmNW4CalmCalmCalmCalmNW5CalmNW4N4CalmNW56

Tide / Current Tables for Pittsburg, New York Slough, Suisun Bay, California
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Pittsburg
Click for Map
Thu -- 04:40 AM PST     3.58 feet High Tide
Thu -- 07:21 AM PST     Sunrise
Thu -- 08:21 AM PST     Moonrise
Thu -- 09:50 AM PST     1.80 feet Low Tide
Thu -- 03:01 PM PST     4.29 feet High Tide
Thu -- 05:15 PM PST     Sunset
Thu -- 06:59 PM PST     Moonset
Thu -- 10:45 PM PST     -0.05 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.61.42.333.53.63.32.72.21.91.822.73.54.14.34.13.62.81.91.10.40.1-0

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
Thu -- 12:10 AM PST     0.00 knots Slack
Thu -- 03:34 AM PST     1.19 knots Max Flood
Thu -- 07:01 AM PST     -0.00 knots Slack
Thu -- 07:21 AM PST     Sunrise
Thu -- 08:21 AM PST     Moonrise
Thu -- 09:16 AM PST     -0.67 knots Max Ebb
Thu -- 11:24 AM PST     0.00 knots Slack
Thu -- 02:08 PM PST     1.16 knots Max Flood
Thu -- 05:10 PM PST     -0.00 knots Slack
Thu -- 05:15 PM PST     Sunset
Thu -- 06:59 PM PST     Moonset
Thu -- 08:38 PM PST     -1.82 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.10.511.21.210.50-0.4-0.7-0.6-0.20.40.91.210.70.1-0.6-1.3-1.7-1.8-1.6-1.2

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 (8,2,3,4)
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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.