Monday, January18, 2021
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Marine Weather and Tides
Marysville, 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 7:20AMSunset 5:12PM Monday January 18, 2021 6:28 AM PST (14:28 UTC) Moonrise 10:50AMMoonset 11:03PM Illumination 27% 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- 159 Am Pst Mon Jan 18 2021
.small craft advisory in effect through this afternoon...
.gale warning in effect from this afternoon through Tuesday morning...
Today..N winds 10 to 20 kt with gusts up to 35 kt.
Tonight..N winds 30 to 40 kt with gusts up to 50 kt.
Tue..N winds 20 to 30 kt with gusts up to 50 kt.
Tue night..NE winds 5 to 15 kt with gusts up to 40 kt.
Wed..NE winds up to 10 kt.
Wed night..NW winds up to 10 kt.
Thu..W winds up to 10 kt.
Fri..W winds 5 to 10 kt.
PZZ500 159 Am Pst Mon Jan 18 2021
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Breezy north winds will prevail over the waters through Monday. The strongest winds are expected over the northern outer waters where occasional low end gale- force gusts will be possible. Locally breezy conditions will also be present along the big sur coast south of point sur. These winds will persist into tomorrow before a burst of offshore winds over land spills over into the waters starting late this evening through tonight. This will bring gale force conditions across the entire coastal waters and through portions of the san francisco bay into Tuesday resulting in widespread hazardous conditions. A large, very long period northwest swell will impact the waters through late tomorrow bringing additional hazards. The next long period northwest swell arrives mid-week.


7 Day Forecast for Marine Location Near Marysville, CA
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location: 39.14, -121.57     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 181145 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 345 AM PST Mon Jan 18 2021

SYNOPSIS. Strong gusty north to east winds will continue early this week as a weather system strengthens to the south of the region. The strongest winds are expected tonight and Tuesday. Less windy conditions expected by mid-week, then precipitation chances return for the end of the week.

DISCUSSION. Satellite imagery shows a band of high clouds moving over NorCal ahead of the initial system dropping south off the coast. North and east surface pressure gradients have continued to tighten overnight (MFR-SAC around 15-16 mbs and RNO-SAC around 9-10 mbs). We're already seeing gusts of 25-35 mph across the northern Sacramento Valley, gusts of 35-50 mph along the western edge of the Sacramento Valley, and gusts of 40-50 mph across the northern Sierra (locally above 60 mph near the mouth of the Feather River Canyon).

Temperatures remain very mild across windier portions of the area. Current readings are mostly in the 60s across the northern half of the Sacramento Valley, while temperatures are in the 40s to the south where winds are lighter. Some light valley fog will be possible to the south and east of Sacramento early this morning.

Breezy north winds will continue to spread south through the Central Valley today. Winds may subside slightly over the foothills and northern Sierra this afternoon and early evening as surface pressure gradients relax a bit.

Stronger winds are forecast to develop tonight and Tuesday as the second portion of the system drops south from the Great Basin across central California and deepens the developing closed low to the southwest of SoCal. Increasing upper level support, stronger subsidence, and strengthening cold-advection will all work drive strong winds. Widespread gusts over 60 mph will be possible across the high Sierra, while gusts of 45-55 mph will be common over the western half of the Central Valley and adjacent foothills. Gusts over the northern Sierra foothills will be more localized to ridgetops and near canyons.

For the valley, the strongest winds will likely be along the western edge of the Sacramento Valley south into the western Delta. The NAEFS anomaly table still pointing toward a potentially stronger wind event for areas to the southwest of Sacramento centered on 18Z Tuesday (return interval between 10 to 30 years). Power outages and tree damage are certainly not out of the question.

By Tuesday evening, winds will start to decrease, especially across the Valley. Gusty winds are expected to linger over the Sierra Tuesday night, weakening significantly by Wednesday morning.

Over the course the first half of the week, temperatures will gradually cool with highs returning the low/mid 60s in the Valley by Wednesday.

EXTENDED DISCUSSION (Friday THROUGH Monday). Ensembles indicate a closed upper low dropping southward along the West Coast and into NorCal Friday and Saturday. This system will bring some precipitation to the region, mainly over the northern and eastern foothills and mountains. Most precipitation is forecast to be south of I-80 over the Sierra by late Saturday morning. A few inches of snow are possible at pass levels, leading to slick roads and mountain travel delays. Dry conditions return late Saturday into Sunday as the upper low exits the region. Then, colder and wetter conditions are forecast early next week as ensembles depict a stronger/colder system that could potentially bring widespread precipitation.

AVIATION. VFR conditions next 24 hours with the exception being some MVFR visbys possible from KSMF southward through about 16Z-18Z today. North wind gusts up to 30-40 kts in the Central Valley and Delta, locally higher. Areas of northeast to east wind gusts stronger than 50 kts over the Sierra.

STO WATCHES/WARNINGS/ADVISORIES. High Wind Warning until 7 PM PST Tuesday for Northeast Foothills/Sacramento Valley-Shasta Lake Area / Northern Shasta County-West Slope Northern Sierra Nevada-Western Plumas County/Lassen Park.

Wind Advisory until 7 PM PST Tuesday for Carquinez Strait and Delta-Central Sacramento Valley-Motherlode-Mountains Southwestern Shasta County to Western Colusa County-Northern Sacramento Valley-Northern San Joaquin Valley-Southern Sacramento Valley.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SFXC1 - San Francisco Bay Reserve, CA 69 mi103 min N 6 58°F 1014 hPa37°F
PCOC1 - 9415144 - Port Chicago, CA 79 mi58 min N 8.9 G 12 63°F 52°F1013.6 hPa
RCMC1 - 9414863 - Richmond, CA 95 mi58 min NW 2.9 G 5.1 53°F 53°F1014 hPa

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Marysville, Yuba County Airport, CA2 mi35 minNNW 1010.00 miFair60°F28°F30%1016.5 hPa
Marysville, Beale Air Force Base, CA7 mi30 minN 1710.00 miFair59°F31°F35%1015.8 hPa
Lincoln Regional Karl Harder Field, CA20 mi33 minNNW 1310.00 miFair52°F36°F54%1014.6 hPa
Oroville Municipal Airport, CA24 mi35 minNNE 910.00 miFair65°F20°F18%1017.8 hPa

Link to 5 minute data for KMYV

Wind History from MYV (wind in knots)
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Last 24hrN3CalmE6CalmCalmCalm3E6S4SE4S4CalmS3E3E4NE3N5NW3N10N14N17
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N16N10
1 day agoNE6N3N6NW8NW5CalmNW5NW5N3CalmS3CalmCalmSE3E3E3CalmCalmCalmNE4NW4CalmCalmN4
2 days agoCalmN3CalmCalmCalmSW3NW6NW7CalmW4N4NW6N3N4NW3NW3N4N5N5N6N5N5--NE3

Tide / Current Tables for Sacramento #4, Sacramento River, California
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Sacramento #4
Click for Map
Mon -- 06:08 AM PST     0.05 feet Low Tide
Mon -- 07:20 AM PST     Sunrise
Mon -- 10:49 AM PST     Moonrise
Mon -- 11:26 AM PST     2.63 feet High Tide
Mon -- 05:12 PM PST     Sunset
Mon -- 06:45 PM PST     0.64 feet Low Tide
Mon -- 10:39 PM PST     2.29 feet High Tide
Mon -- 11:03 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.21.71.20.80.40.20.10.20.81.62.22.62.62.421.61.20.90.70.71.11.72.22.3

Tide / Current Tables for Clarksburg #4, Sacramento River, California
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Clarksburg #4
Click for Map
Mon -- 04:38 AM PST     0.05 feet Low Tide
Mon -- 07:20 AM PST     Sunrise
Mon -- 10:17 AM PST     2.63 feet High Tide
Mon -- 10:49 AM PST     Moonrise
Mon -- 05:13 PM PST     Sunset
Mon -- 05:15 PM PST     0.64 feet Low Tide
Mon -- 09:30 PM PST     2.29 feet High Tide
Mon -- 11:03 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.61.10.60.30.10.10.41.11.82.32.62.62.31.91.41.10.80.60.81.31.92.22.32.1

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.