Friday, January15, 2021
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Marine Weather and Tides
Country Club, 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 7:18AMSunset 5:11PM Friday January 15, 2021 12:31 PM PST (20:31 UTC) Moonrise 9:25AMMoonset 8:01PM Illumination 6% Phase: Waxing Crescent; Moon at 2 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- 823 Am Pst Fri Jan 15 2021
Today..NE winds up to 10 kt. Patchy dense fog this morning.
Tonight..NW winds around 5 kt.
Sat..W winds around 5 kt.
Sat night..NW winds around 5 kt.
Sun..NE winds around 5 kt.
Sun night..NW winds up to 10 kt.
Martin luther king jr day..N winds 10 to 20 kt with gusts up to 25 kt.
Tue..N winds 10 to 20 kt with gusts up to 25 kt.
PZZ500 823 Am Pst Fri Jan 15 2021
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Moderate to locally breezy northwest winds across the waters through much of the weekend. Winds will shift more northerly Sunday and Sunday night and increase as offshore winds pick up over land. Occasional gale force gusts will be possible at that time across the northern outer waters. Moderate west to northwest swell will build through tonight resulting in hazardous seas conditions for small crafts into the weekend. A second larger long period northwest swell will arrive late Sunday.


7 Day Forecast for Marine Location Near Country Club, CA
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location: 37.97, -121.37     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 151029 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 229 AM PST Fri Jan 15 2021

SYNOPSIS. Dry weather into next week with areas of late night and morning valley fog. Well above average temperatures will continue into next week. Strong winds possible early next week.

DISCUSSION. Infrared satellite imagery reveals developing Tule Fog in the Central Valley this early Friday morning. Visibilities are already down to a quarter-mile at several airports. Consequently, a Dense Fog Advisory is in effect for the southern Sacramento Valley, the Delta, as well as the northern San Joaquin Valley through 11 AM PST Friday.

A broad upper level ridge parked about 400 miles west of Santa Barbara will promote another afternoon with temperatures well- above January normals. Most communities in the Sacramento Valley will max out in the 60s. Similar to yesterday, localized areas with lingering fog into the afternoon hours may struggle to get out of the upper 50s. For reference, normal high temperature for January 15 at Downtown Sacramento is 54 deg F and 55 deg F at Redding.

The offshore ridge is forecast to amplify over the weekend, leading to further warming across much of the Golden State. Unfortunately, this also means that dry conditions are forecast to prevail as we dive deeper into what is ordinarily the wettest time of the year.

A shortwave will ripple around the outer periphery of the upper level ridge late Sunday and into Monday, quickly diving south from the Pacific Northwest into California. A second piece of energy will drop south on Tuesday as an inside slider, reinforcing northeasterly, and potentially strong/damaging offshore flow. More on that in the extended discussion section . // Rowe

EXTENDED DISCUSSION (Tuesday THROUGH Friday). A closed off upper level low will be set up over SoCal with a strong Pacific high begining to build into NorCal. This will bring a strong pressure gradient over the region with strong north to east winds late Sunday night into Tuesday. NAEFS shows a band of anomalous winds (30+ year return intervals) for the wind component. Current forecast indicates wind gusts ranging from the 30 to 40 mph in the Valley and into the Delta, locally higher. There is the potential for higher wind gusts up to 70+ in favored gaps, canyons and ridgetops. Weakened or burned trees and limbs may fall in strong winds. Stay tuned for details.

Dry weather is expected for much of the extended period as we sit on the eastern edge of the Pacific high. The ridge will push west late in the week as a short wave trough digs down the coast. This may bring some light showers to the area. NBM guidance shows daytime temperatures gradually cooling down through the period, but highs could still remain above normal for mid January.

-CJM

AVIATION. Areas of IFR/LIFR from KMYV south due to fog and low cigs this morning. Conditions improve after 18z with VFR conditions expected by 20z. VFR conditions north of KMYV. Winds remain under 10 knots.

STO WATCHES/WARNINGS/ADVISORIES. Dense Fog Advisory until 11 AM PST this morning for Carquinez Strait and Delta-Central Sacramento Valley-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 28 mi43 min ENE 1.9 G 4.1 53°F 1027 hPa
PCOC1 - 9415144 - Port Chicago, CA 36 mi43 min N 5.1 G 5.1 50°F 52°F1027.1 hPa
SFXC1 - San Francisco Bay Reserve, CA 38 mi106 min ESE 5.1 1028 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 40 mi43 min NNE 4.1 G 5.1 50°F 52°F1027.3 hPa
UPBC1 40 mi43 min E 4.1 G 5.1
CQUC1 46 mi42 min 52°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 48 mi43 min E 11 G 13 56°F 1026.4 hPa
AAMC1 - 9414750 - Alameda, CA 51 mi43 min Calm G 1.9 58°F 53°F1026.7 hPa

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Stockton, Stockton Metropolitan Airport, CA8 mi36 minS 31.50 miFog/Mist54°F50°F87%1026.6 hPa

Link to 5 minute data for KSCK

Wind History from SCK (wind in knots)
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Last 24hrCalmCalmW5NW5NW7W3N4E4E5E4SE4E3NE3CalmCalmCalmSE5SE4SE3E5NE4N3CalmS3
1 day agoN3NW5NW5W8NW8NW8N8NW7NW8W8--W6W4W5W6W6W3CalmCalmE3E4CalmCalmNW4
2 days agoE43E3CalmCalmS3SW3W5W3CalmCalmCalmN5NE3CalmS4CalmCalmE3E6SE6CalmCalmCalm

Tide / Current Tables for Blackslough Landing, San Joaquin River, California
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Blackslough Landing
Click for Map
Fri -- 02:06 AM PST     -0.29 feet Low Tide
Fri -- 07:20 AM PST     Sunrise
Fri -- 08:16 AM PST     3.37 feet High Tide
Fri -- 09:24 AM PST     Moonrise
Fri -- 01:44 PM PST     1.25 feet Low Tide
Fri -- 05:10 PM PST     Sunset
Fri -- 06:51 PM PST     3.89 feet High Tide
Fri -- 08:01 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.5-0-0.3-0.10.61.52.333.43.32.82.21.71.31.31.62.43.23.73.93.73.22.41.6

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 -- 03:04 AM PST     0.00 knots Slack
Fri -- 06:16 AM PST     0.63 knots Max Flood
Fri -- 07:20 AM PST     Sunrise
Fri -- 09:24 AM PST     Moonrise
Fri -- 09:43 AM PST     -0.00 knots Slack
Fri -- 11:53 AM PST     -0.24 knots Max Ebb
Fri -- 02:08 PM PST     0.00 knots Slack
Fri -- 04:47 PM PST     0.62 knots Max Flood
Fri -- 05:10 PM PST     Sunset
Fri -- 07:58 PM PST     -0.00 knots Slack
Fri -- 08:00 PM PST     Moonset
Fri -- 11:41 PM PST     -0.62 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.6-0.5-0.3-00.30.50.60.60.40.2-0.1-0.2-0.2-0.2-00.30.60.60.50.3-0-0.3-0.5-0.6

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.