Friday, January22, 2021
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Marine Weather and Tides
Terminous, CA

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 7:15AMSunset 5:18PM Friday January 22, 2021 6:17 PM PST (02:17 UTC) Moonrise 12:32PMMoonset 1:56AM Illumination 73% Phase: Waxing Gibbous; Moon at 10 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- 224 Pm Pst Fri Jan 22 2021
Tonight..W winds up to 10 kt, becoming ne after midnight. A slight chance of showers.
Sat..NW winds 5 to 15 kt.
Sat night..W winds 5 to 10 kt.
Sun..SW winds 5 to 10 kt. Rain.
Sun night..NW winds 15 to 25 kt with gusts up to 30 kt. Rain likely.
Mon..NW winds 15 to 25 kt with gusts up to 30 kt.
Mon night..NW winds 5 to 15 kt.
Tue..S winds 10 to 20 kt with gusts up to 25 kt. Rain.
Wed..S winds 5 to 15 kt with gusts up to 25 kt. Rain.
PZZ500 224 Pm Pst Fri Jan 22 2021
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Post frontal showers will linger through early tonight with gusty winds. Unsettled weather will continue through much of the forecast period as a series of storms move through the region. The next one being on Sunday and into Monday. This front will be accompanied by widespread gusty winds with gale force conditions possible Sunday night into Monday morning. Another storm system is then expected mid next week. Moderate northwest swell will persist as a couple additional northwest swells arrive today and then on Sunday.


7 Day Forecast for Marine Location Near Terminous, CA
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location: 38.12, -121.43     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 222232 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 232 PM PST Fri Jan 22 2021

SYNOPSIS. Periods of rain and snow showers this afternoon. Can't rule out a stray thunderstorm south of Sacramento. Renewed rain and snow chances return late Sunday and into Monday. Potentially high- impact system will arrive around the middle of next week.

DISCUSSION. Visible satellite imagery shows low pressure system spinning counterclockwise just off the Sonoma County coast this early afternoon. Boundary pushed through northern California earlier today, bringing periods of rain to the Sacramento and northern San Joaquin Valleys. This line continues to impact portions of the Sierra this early afternoon. CalTrans webcams indicate snow- covered roadways along I-80 and US-50. A Winter Weather Advisory is in effect for locations at/above 4,500 ft elevation through 10 PM tonight. Can't rule out some snow showers making it all the way down to around 3,000 ft. If your weekend plans include mountain travel, be sure to check CalTrans for the latest road conditions.

The cooler air and steepening lapse rates will provide a brief window of opportunity for isolated thunderstorm development this afternoon, generally from Sacramento and points south. Can already see some convection attempting to bubble up on both satellite and radar. The lack of sunshine may limit the overall potential, though any storms that do develop could be accompanied by brief heavy downpours, lightning, and perhaps some small hail.

Aside a few lingering rain/snow showers in the mountains tomorrow morning, Saturday is expected to be largely uneventful weather- wise. Temperatures tomorrow afternoon will be in the 50s to low 60s across the Sacramento Valley, or about 5 to 10 degrees above mid/late January climatological normals.

Storm number two in what will become a parade of systems arrives around Sunday afternoon/evening from the north. This one will be a bit wetter than today's system, producing rain in the 0.25 to 1 inch range in the Valley, and 6 to 10 inches of snow at/above pass levels. Even colder air will usher in with this storm, further dropping snow levels . temperatures at 925 mb (about 2,500 ft above sea level) will likely be around or just below 0 deg C. The big question is if the precipitation will have already concluded by the time the coldest air arrives to the region. Still some uncertainty with that regard, but will keep a close eye as the higher resolution models begin to capture this event.

First half of the day on Tuesday appears to be tranquil, but that will change in a hurry as a potentially high-impact storm system takes aim on the region that could bring several feet of snow to the mountains on Wednesday and Thursday. More on that in the extended . // Rowe

EXTENDED DISCUSSION (Tuesday THROUGH Friday).

Ensembles bring high potential for precipitation spreading on Tuesday as a Pacific frontal system arrives, with widespread moderate to heavy precipitation spreading across the area in the afternoon and continuing through Wednesday. Abundant moisture associated with this system should result in significant rainfall and heavy snow. Several feet of snow are possible in the higher elevations through midweek, causing extensive travel difficulties. Cold air with this system could bring snow down to 500 feet elevations in Shasta County, down to 1000 feet elsewhere. The mid to upper foothills could see 6 to 12 inches of snow potentially, but much uncertainty remains on details at this point. Stay tuned!

While much of the precipitation should be in the form of snow, heavy to moderate rain is possible in lower elevations. Some burn scars in those areas could potentially be impacted. Ponding on roads in the Valley could cause travel delays.

The threat of showers continues Thursday into Friday before the upper trough exits. EK

AVIATION.

Scattered showers mainly from KMYV south until 4z. MVFR in any showers due to low cigs and lower vis. Isolated thunderstorms from I-80 south until 2z. Some clearing expected for the northern terminals tonight with BKN to OVC skies 035-050 for the southern terminals. Clearing skies tomorrow with VFR conditions. Winds remain under 10 knots.

STO WATCHES/WARNINGS/ADVISORIES. Winter Weather Advisory until 10 PM PST this evening for West Slope Northern Sierra Nevada.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 25 mi47 min E 6 G 7 48°F 1011.1 hPa
SFXC1 - San Francisco Bay Reserve, CA 32 mi92 min Calm 52°F 1011 hPa42°F
PCOC1 - 9415144 - Port Chicago, CA 33 mi47 min SSW 2.9 G 5.1 49°F 52°F1011 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 37 mi47 min Calm G 1 50°F 52°F1011.3 hPa
UPBC1 37 mi47 min W 1.9 G 2.9
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 44 mi47 min W 2.9 G 4.1 50°F 1011 hPa
AAMC1 - 9414750 - Alameda, CA 52 mi47 min WNW 2.9 G 5.1 50°F 53°F1011.5 hPa

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Stockton, Stockton Metropolitan Airport, CA17 mi22 minN 010.00 miOvercast48°F44°F86%1011.6 hPa

Link to 5 minute data for KSCK

Wind History from SCK (wind in knots)
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Last 24hrCalmSW3--W3E4NW6NW5NW11CalmCalmN3CalmS6S5W7SW7SW8SW5S5SE7NE8E8E6Calm
1 day agoW3W4W4E3S3E3E4E3SE3CalmCalmSE3NE3NE3E4SE5SE5SE6SE3S6S3S4CalmCalm
2 days agoN12NW7W9W6W9W9W6W7W7W6SW6W8W4SW3CalmNW5NW7NW7NW6NW7NW5N6NW7W5

Tide / Current Tables for Terminous, South Fork, Mokelumne River, California
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Terminous
Click for Map
Fri -- 01:26 AM PST     2.19 feet High Tide
Fri -- 01:56 AM PST     Moonset
Fri -- 06:28 AM PST     0.99 feet Low Tide
Fri -- 07:17 AM PST     Sunrise
Fri -- 12:32 PM PST     Moonrise
Fri -- 12:47 PM PST     3.26 feet High Tide
Fri -- 05:18 PM PST     Sunset
Fri -- 08:52 PM PST     0.32 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.92.22.11.91.51.2111.31.82.42.93.23.33.12.72.21.71.20.70.40.30.50.9

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
Fri -- 01:55 AM PST     Moonset
Fri -- 02:21 AM PST     -0.00 knots Slack
Fri -- 04:53 AM PST     -0.27 knots Max Ebb
Fri -- 07:16 AM PST     Sunrise
Fri -- 07:36 AM PST     0.00 knots Slack
Fri -- 10:32 AM PST     0.65 knots Max Flood
Fri -- 12:32 PM PST     Moonrise
Fri -- 02:10 PM PST     -0.00 knots Slack
Fri -- 05:17 PM PST     Sunset
Fri -- 06:04 PM PST     -0.51 knots Max Ebb
Fri -- 09:59 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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0.40.30.1-0.1-0.2-0.3-0.2-0.10.10.40.60.60.50.30.1-0.2-0.4-0.5-0.5-0.5-0.4-0.200.2

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
Ground Weather Radar Station




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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.