Monday, December9, 2019
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Marine Weather and Tides
Stockton, CA

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:07AMSunset 4:47PM Monday December 9, 2019 9:50 AM PST (17:50 UTC) Moonrise 3:24PMMoonset 4:27AM Illumination 95% Phase: Waxing Gibbous; Moon at 13 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- 851 Am Pst Mon Dec 9 2019
Today..SW winds up to 10 kt. Patchy fog this morning.
Tonight..W winds up to 10 kt.
Tue..NE winds up to 10 kt.
Tue night..E winds 5 to 15 kt. A chance of rain.
Wed..NE winds 5 to 15 kt. A slight chance of rain.
Wed night..E winds up to 10 kt.
Thu..SE winds around 5 kt.
Fri..W winds up to 10 kt.
PZZ500 851 Am Pst Mon Dec 9 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... High pressure will build in from the west into today, keeping winds generally light across the waters. A weak system will then move through the region early this week bringing a chance of showers Tuesday night into Wednesday while winds turn southerly. Moderate northwest swell will persist through much of the week before a larger and longer period northwest swell arrives late this week.


7 Day Forecast for Marine Location Near Stockton, CA
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location: 37.96, -121.29     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 091120 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 320 AM PST Mon Dec 9 2019

SYNOPSIS. High pressure builds over the region on today, which will lead to a period of dry conditions and near average temperatures early this week. Precipitation chances return to areas north of Sacramento on Wednesday with more widespread precipitation expected late in the week.

DISCUSSION. Skies have cleared as the trough continues to south of the area. IR difference imagery shows an extensive area of dense fog along the eastern edge of the Central Valley extending from about Oroville southward through the San Joaquin Valley. Light northerly flow over the western half of the Sacramento Valley has so far prevented the fog from shifting further to the west. Current temperatures are considerably cooler across most of the area compared to 24 hours ago and range from the mid 20s in the colder mountain valleys to the 40s to around 50 in the Central Valley.

Heights will continue to build today as an offshore ridge moves through. This ensures a period of dry weather to start the week with near average temperatures. Valley fog is expected to mix out by mid to late morning.

The ridge axis crosses the state early Tuesday before a weak shortwave moves through Tuesday evening into early Wednesday. Moisture seems to be meager so precipitation will be light, mainly focused over the northern Sacramento Valley and into the higher terrain. Any snowfall will lead to little to no accumulations.

Ridge briefly rebounds Wednesday, then a wide swath of deep moisture will approach NorCal beginning late Wednesday. Overall lift appears to be rather weak, but increasing warm-advection will likely result in some light precipitation across the northern half of the forecast area and northern Sierra Nevada. Snow levels expected to be over 8K ft, so little to no winter travel impacts expected.

EXTENDED DISCUSSION (Friday THROUGH Monday). The extended forecast calls for zonal flow over the area. A weak shortwave disturbance will slide over us on Thursday, dragging a cold front into the region. The chance for showers remains in the forecast at this time, keeping the bulk of any precip over the mountainous regions. A more vigorous trough will dig into the area on Friday. Ensembles remain in good agreement with pushing a cold front south through the area Friday night into Saturday morning. This will be the best chances for widespread precip activity for interior NorCal, with the chance for showers lingering throughout the day on Saturday. Snow levels start off fairly high, but once the front passes through we could see accumulating snow at pass level on Saturday. By Sunday, a shortwave ridge builds over the area which will bring drier weather through Monday.

AVIATION. A tongue of fog has developed along the eastern side of the Valley, bringing IFR and LIFR conditions to several TAF sites. Farther north and west of this, light north winds are prevalent which has kept fog development at bay. The fog is expected to linger throughout most of the morning, with VFR conditions forecast by early afternoon.

STO WATCHES/WARNINGS/ADVISORIES. Dense Fog Advisory until 10 AM PST this morning for Central Sacramento Valley-Motherlode-Northern San Joaquin Valley- Southern Sacramento Valley.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 32 mi56 min N 5.1 G 6 53°F 1022.1 hPa
PCOC1 - 9415144 - Port Chicago, CA 40 mi56 min SW 7 G 9.9 49°F 53°F1022.3 hPa
SFXC1 - San Francisco Bay Reserve, CA 42 mi65 min WNW 2.9 49°F 1022 hPa
UPBC1 44 mi56 min WNW 7 G 8
MZXC1 - 9415102 - Martinez-Amorco CA 45 mi56 min WNW 8 G 8.9 48°F 54°F1022.7 hPa
AAMC1 - 9414750 - Alameda, CA 55 mi56 min ESE 1.9 G 1.9 51°F 55°F1023 hPa

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Stockton, Stockton Metropolitan Airport, CA4 mi55 minSE 40.25 miFog46°F45°F96%1022.2 hPa

Link to 5 minute data for KSCK

Wind History from SCK (wind in knots)
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Last 24hrSE5E6E5E9SE6S4CalmCalmW5W4NW6N7NW6W6W6W6NW4W5CalmCalmCalmE3CalmSE4
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Tide / Current Tables for Blackslough Landing, San Joaquin River, California
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Blackslough Landing
Click for Map
Mon -- 04:17 AM PST     2.58 feet High Tide
Mon -- 04:27 AM PST     Moonset
Mon -- 07:09 AM PST     Sunrise
Mon -- 09:39 AM PST     0.84 feet Low Tide
Mon -- 03:24 PM PST     Moonrise
Mon -- 03:31 PM PST     3.71 feet High Tide
Mon -- 04:46 PM PST     Sunset
Mon -- 11:19 PM PST     -0.06 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.51.11.72.32.62.52.11.61.20.90.91.21.82.63.33.73.73.42.821.30.70.2-0

Tide / Current Tables for Vulcan Island .5 mi E, San Joaquin River, California Current
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Vulcan Island .5 mi E
Click for Map
Mon -- 02:24 AM PST     0.48 knots Max Flood
Mon -- 04:27 AM PST     Moonset
Mon -- 05:17 AM PST     -0.00 knots Slack
Mon -- 07:09 AM PST     Sunrise
Mon -- 07:39 AM PST     -0.27 knots Max Ebb
Mon -- 10:19 AM PST     0.00 knots Slack
Mon -- 01:13 PM PST     0.70 knots Max Flood
Mon -- 03:24 PM PST     Moonrise
Mon -- 04:37 PM PST     -0.00 knots Slack
Mon -- 04:45 PM PST     Sunset
Mon -- 08:12 PM PST     -0.57 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.10.40.50.50.30.1-0.1-0.2-0.3-0.2-0.10.20.50.70.70.50.2-0.1-0.4-0.5-0.6-0.5-0.5-0.3

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 (12,3,4,5)
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Ground Weather Radar Station Sacramento, CA
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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.