Monday, January18, 2021
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L-36.com

Marine Weather and Tides
American Canyon, 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 7:21AMSunset 5:18PM Monday January 18, 2021 6:22 PM PST (02:22 UTC) Moonrise 10:53AMMoonset 11:06PM Illumination 31% Phase: Waxing Crescent; Moon at 6 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- 200 Pm Pst Mon Jan 18 2021
.small craft advisory in effect until 5 pm pst this afternoon...
.gale warning in effect from 5 pm pst this afternoon through Tuesday afternoon...
Rest of 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 around 5 kt.
Wed night..W winds around 5 kt.
Thu..W winds up to 10 kt.
Fri..NW winds 5 to 10 kt. A chance of rain.
PZZ500 200 Pm 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... Northerly winds will continue to increase over the waters into tonight with occasional low end gale-force gusts possible. Winds will pick up substantially tonight as a burst of strong offshore winds over land spills over into the waters. Widespread gale force conditions will then persist through tomorrow morning over the entire coastal waters including the san francisco and Monterey bays. This will result in widespread hazardous conditions. A large, very long period northwest swell will continue to impact the waters into this evening bringing additional hazards. The next long period northwest swell will arrive mid-week.


7 Day Forecast for Marine Location Near American Canyon, CA
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location: 38.21, -122.3     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 182252 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 252 PM PST Mon Jan 18 2021

SYNOPSIS. Strong, gusty north to east winds will continue through Tuesday night. Less windy conditions expected by mid-week, then rain and snow return for the end of the week.

DISCUSSION. Some areas seeing a lull/decrease in the wind gusts from last nite/earlier this morning over Norcal as the initial low pressure system drops to the south (near 30N/120W) and away from our region. The 2nd system located near the ID/NV border is forecast to retrograde across NV and the Srn half of CA through Tue. This feature is deeper/colder (5H heights 546-550 dam compared to the initial system 567-568 dam), albeit it will be taking a different track across our region. This track favors a much stronger minus U [horizontal (to the W)] component of the wind in this particular case and a larger area in Norcal, mostly in our CWA, under a significant standardized wind anomaly (-5). Thus, we are expecting another late night/early morning round of significantly strong N to E winds over our CWA. Given the virtually unidirectional NE flow aloft, wind speeds could exceed that of last nite over the Sierra and with the reverse Gap flow through the Carquinez Strait. Pressure gradients are likely to peak similar to last nite/early this morning, with MFR-SAC around 15 mbs and RNO-SAC around 9-10 mbs. Local gusts 80+ mph are expected over the Sierra, 70+ near Jarbo Gap, and up to 50 mph on the W side of the Valley and Solano Co areas. The NAEFS anomaly table still pointing toward a potentially stronger wind event for areas to the southwest of Sacramento early Tuesday with a return interval near 30 years. Power outages and tree damage are certainly not out of the question.

Satellite shows some cumuliform cloudiness with the 2nd system which the NE flow could bank up along the E side of the Sierra Crest with possible spill-over snow showers on our side of zone 69. These system will bring CAA winds (due to the deeper/colder low) so min temps will be colder as well, but not as cold as Wed morning when winds subside allowing for strong radiational cooling in the Valley. The CAA will also result in cooler max temps for Tue.

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. Min temps will cool into the 30s by Wed and for the rest of the week. The dry air mass will preclude much widespread frost until the latter half of the week, although cloud cover, or the lack of it, will make it rather problematic for now.

Over the course of the week, temperatures will gradually cool through the 60s in the Valley, with temps returning to near normal by Fri with highs in the 50s in the Valley, 30s to 40s in the foothills and mtns.

Although there are model timing differences on Fri, we are reasonably certain in the chances of rain/mountain snow on Fri. There is enough model agreement that a seasonably cold upper trof will move into Norcal on Fri giving the CWA a chance of precip. The heaviest amounts are forecast over the Sierra (liquid amounts up to a half inch or so, and 5-7 inches or so of snow) but only a few hundredths in the Valley.

EXTENDED DISCUSSION (Friday THROUGH Monday).

Ensemble guidance is in good agreement a low pressure system will bring some unsettled weather to northern California Friday into Saturday as it digs south along the West Coast. Precip amounts for valley locations are not expected to be all that much. The foothills and mountains will see better chances for measurable precip. After a possible break in the stormy weather Saturday, we could see another impulse bring potentially more wet weather to the area by the end of the weekend and into next week. Models are indicating this second system could be more impactful then the Friday into Saturday system.

AVIATION.

VFR conditions next 24 hours. 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
CQUC1 11 mi33 min 53°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 11 mi52 min N 14 G 17 70°F 1012.4 hPa
UPBC1 15 mi52 min N 16 G 20
SFXC1 - San Francisco Bay Reserve, CA 15 mi97 min NNE 8.9 71°F 1013 hPa18°F
MZXC1 - 9415102 - Martinez-Amorco CA 15 mi52 min N 9.9 G 17 71°F 53°F1013 hPa
PCOC1 - 9415144 - Port Chicago, CA 17 mi52 min NW 6 G 8 71°F 53°F1012.7 hPa
RCMC1 - 9414863 - Richmond, CA 21 mi52 min N 19 G 22 74°F 53°F1012.4 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 21 mi52 min NNE 23 G 29 74°F 1012.8 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 23 mi41 min NW 8.9 65°F 1013 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 25 mi52 min N 19 G 23 68°F 1012.3 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 28 mi52 min N 17 G 21
OKXC1 - 9414776 - Oakland (Berth 34), CA 28 mi52 min N 17 G 20 65°F 1012.6 hPa
OBXC1 28 mi52 min 69°F 27°F
LNDC1 29 mi52 min N 11 G 19 73°F 1012.5 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 29 mi52 min N 13 G 17 67°F 1011.7 hPa
PXSC1 29 mi52 min 68°F 41°F
FTPC1 - 9414290 - San Francisco, CA 29 mi52 min N 15 G 18 71°F 54°F1012.8 hPa
AAMC1 - 9414750 - Alameda, CA 30 mi52 min N 8.9 G 14 72°F 54°F1012.7 hPa
46237 - San Francisco Bar, CA (142) 34 mi52 min 53°F10 ft
BDXC1 42 mi76 min 55°F
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 43 mi32 min NW 16 G 19 53°F9 ft1013 hPa
RTYC1 - 9414523 - Redwood City, CA 49 mi52 min NNW 1.9 G 5.1 62°F 57°F1013.2 hPa

Wind History for Union Pacific Rail Road Bridge (UPRR), CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Napa, Napa County Airport, CA1 mi28 minN 1210.00 miFair69°F18°F14%1011.7 hPa
Novato / Gnoss Field, CA14 mi27 minNNW 710.00 miFair61°F18°F19%1012.9 hPa
Fairfield / Travis Air Force Base, CA20 mi24 minNNW 14 G 1810.00 miFair67°F13°F12%1012.8 hPa
Concord, Buchanan Field, CA21 mi29 minN 410.00 miFair63°F26°F25%1011.4 hPa
Vacaville Nut Tree Airport, CA22 mi29 minN 24 G 3210.00 miFair and Windy68°F12°F11%1013.2 hPa

Link to 5 minute data for KAPC

Wind History from APC (wind in knots)
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Last 24hrNE4E3CalmCalmCalmSE4CalmSE6S6CalmS8W7N18N26
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1 day agoCalmCalmSE4NE3CalmCalmCalmE4CalmNE3NE3CalmCalmCalmCalmCalmW3CalmCalmSW6SW6SW6SW3E6
2 days agoCalmE3CalmN7N4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmSW4W33S4SW4S5S3

Tide / Current Tables for Brazos Drawbridge, Napa River, Carquinez Strait, California
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Brazos Drawbridge
Click for Map
Mon -- 05:45 AM PST     5.98 feet High Tide
Mon -- 07:23 AM PST     Sunrise
Mon -- 10:52 AM PST     Moonrise
Mon -- 11:52 AM PST     2.14 feet Low Tide
Mon -- 04:58 PM PST     5.23 feet High Tide
Mon -- 05:16 PM PST     Sunset
Mon -- 11:06 PM PST     Moonset
Mon -- 11:42 PM PST     0.81 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.61.52.745.15.865.64.83.82.92.32.12.53.34.24.95.254.43.42.41.50.9

Tide / Current Tables for Mare Island Strait, So Vallejo, San Pablo Bay, California Current
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Mare Island Strait
Click for Map
Mon -- 02:50 AM PST     1.49 knots Max Flood
Mon -- 06:09 AM PST     -0.00 knots Slack
Mon -- 07:22 AM PST     Sunrise
Mon -- 08:16 AM PST     -1.32 knots Max Ebb
Mon -- 10:52 AM PST     Moonrise
Mon -- 11:36 AM PST     0.00 knots Slack
Mon -- 02:36 PM PST     1.03 knots Max Flood
Mon -- 05:16 PM PST     Sunset
Mon -- 05:20 PM PST     -0.00 knots Slack
Mon -- 07:51 PM PST     -1.91 knots Max Ebb
Mon -- 11:06 PM PST     Moonset
Mon -- 11:51 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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0.61.11.41.51.30.80.1-0.8-1.3-1.3-1-0.40.20.7110.80.2-0.8-1.7-1.9-1.8-1.4-0.7

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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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.