Sunday, March29, 2020
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Marine Weather and Tides
Stockton, 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 6:53AMSunset 7:26PM Saturday March 28, 2020 9:53 PM PDT (04:53 UTC) Moonrise 8:22AMMoonset 10:39PM Illumination 26% Phase: Waxing Crescent; Moon at 5 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- 822 Pm Pdt Sat Mar 28 2020
Tonight..SW winds 5 to 10 kt. Rain.
Sun..SW winds 5 to 15 kt. Rain.
Sun night..W winds 5 to 15 kt.
Mon..SW winds 5 to 15 kt.
Mon night..W winds 5 to 10 kt.
Tue..W winds up to 10 kt.
Tue night..NW winds 5 to 10 kt.
Wed..NW winds up to 10 kt.
Thu..W winds up to 10 kt.
PZZ500 822 Pm Pdt Sat Mar 28 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light winds persisting through the weekend and early next week as high pressure moves over the southern california waters and a weak boundary approaches from offshore of the pacific northwest. Mixed swell will continue with a moderate northwest swell and a light southwesterly swell.


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 290438 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 938 PM PDT Sat Mar 28 2020

Synopsis. Unsettled weather is expected over the weekend with showers and mountain snow showers. Slight chance of thunderstorms Sunday afternoon. Threat of showers persists in the north Monday through Tuesday morning, otherwise drier and much warmer into the middle of next week.

Discussion. Evening Update: The current 6.95 micron water vapor imagery shows the shortwave spinning about 150 miles off the coast. Warm advection processes continue to foster the development of light showers across the region. Radar imagery shows the activity is somewhat scattered in nature with some of the showers currently entering the Sierra. A couple traffic cameras show light accumulations onto the main thoroughfare. Current snow levels are running just below 5,000 feet per S-band radar data. The recent 3-hour precipitation trends have depicted only minimal amounts, generally ranging from 0.05 to 0.15 inches. Recent high-resolution models maintain intermittent showers into the overnight hours with additional activity reaching the Valley by mid-morning on Sunday. This will occur along the leading edge of a decaying cold front which gradually washes out upon moving inland. ~BRO

Previous Discussion. Latest radar imagery indicates light precipitation continuing to spread across the region this afternoon. Precipitation amounts have been light, generally ranging from less than 0.05" in the Valley to around 0.15" in the northern mountains. This precipitation activity is associated with a trough gradually moving inland.

Conditions trend wetter early this evening into Sunday as reinforcing wave with a cold front pushes inland, but moisture is somewhat lacking, so rain and snowfall amounts should remain light to moderate. Overall, additional QPF amounts will be 0.10 to 0.40 inches in the Valley, and 0.50 to 0.75 inches (locally higher) of liquid precipitation over the mountains tonight into Sunday. NBM guidance favors up to 4.5" of snowfall accumulation at Blue Canyon. Total snow amounts will be between 3 to 5 inches over the Sierra/Cascade range with higher amounts over peaks. Snow levels are forecast to be from 4000-5500 feet. Although total snow accumulations and snowfall rates will remain on the light side, minor travel impacts are still possible including travel delays and slick roads.

Hi-Res models indicate a brief break in precipitation activity over the Valley after midnight, with continued activity over the northern Sierra and Shasta County. Then, models depict the next wave of precipitation pushing into the region Sunday morning. There is a slight chance of thunderstorms Sunday afternoon given the potential for some clearing behind the front. HREF is showing best chance of thunderstorms over the Delta and western portions of the Central Valley. Main threats are small hail, brief heavy downpours, and gusty winds if storms develop.

By early next week, a trough tracking through the Pacific NW and its associated frontal boundary will bring a chance of showers to the northern mountains and the northern Sacramento Valley Monday through Tuesday morning. Best dynamics will remain north of the forecast area; thus, expected precipitation amounts will remain generally under a tenth of an inch. Elsewhere, conditions will remain dry with increasing cloud coverage generally north of I-80. Regarding temperatures, highs are forecast to gradually warm up early next week, and will rise to slightly above normal by Tuesday. Forecast highs on Tuesday will be 5 to 10 degrees warmer than Monday, with Valley highs in the low 70s.

EXTENDED DISCUSSION (Wednesday THROUGH Saturday).

Deterministic and ensemble guidance support increasing heights across the region as an amplifying ridge builds over the West Coast. This should result in dry conditions and above normal highs (generally 5-15 above average). Look for high temperatures to reach the upper 70s to low 80s across the Valley, while mountain locations will be in the low 50s to upper 60s.

AVIATION.

VFR and locally MVFR ceilings are likely to prevail as a system moves across the area. Terminals may see periods of MVFR visbys with any SHRA. Winds generally under 12 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 32 mi53 min WNW 1 G 1.9 53°F 1020.5 hPa (+0.0)
PCOC1 - 9415144 - Port Chicago, CA 40 mi53 min SW 2.9 G 5.1 51°F 58°F1020.3 hPa (+0.0)
SFXC1 - San Francisco Bay Reserve, CA 42 mi68 min W 5.1
UPBC1 44 mi53 min SW 6 G 8.9
MZXC1 - 9415102 - Martinez-Amorco CA 45 mi53 min SSW 5.1 G 7 52°F 57°F1020.6 hPa (+0.0)
AAMC1 - 9414750 - Alameda, CA 55 mi53 min SW 5.1 G 6 53°F 58°F1020.7 hPa (-0.3)

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Stockton, Stockton Metropolitan Airport, CA4 mi58 minSW 510.00 miLight Rain53°F48°F86%1020.6 hPa

Link to 5 minute data for KSCK

Wind History from SCK (wind in knots)
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Last 24hrW9W5NW4NW4NW3CalmNE4E3CalmSE3SW3SW4SW4S3S3CalmNW54NW3N3CalmCalmCalmSW5
1 day agoNW7W5W3NW5W8W9W7NW5CalmN4CalmS6SE6--S7SW8W10W11W11W17W15W13W11W9
2 days agoW12W5W6W5W5W4CalmW6SW5CalmW4S3CalmW5NW43N5NW8NW7N8N7N7NE5NW5

Tide / Current Tables for Stockton, San Joaquin River, California
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


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
Sun -- 01:39 AM PDT     -0.26 knots Max Ebb
Sun -- 04:30 AM PDT     0.00 knots Slack
Sun -- 06:54 AM PDT     Sunrise
Sun -- 07:20 AM PDT     0.67 knots Max Flood
Sun -- 09:57 AM PDT     Moonrise
Sun -- 10:26 AM PDT     -0.00 knots Slack
Sun -- 01:35 PM PDT     -0.56 knots Max Ebb
Sun -- 06:08 PM PDT     0.00 knots Slack
Sun -- 07:26 PM PDT     Sunset
Sun -- 08:47 PM PDT     0.42 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.1-0.2-0.3-0.2-0.10.20.50.70.60.40.1-0.1-0.4-0.5-0.6-0.5-0.4-0.2-00.20.40.40.40.3

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 (0,6,7,8)
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Ground Weather Radar Station Sacramento, CA
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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.