Friday, November27, 2020
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Marine Weather and Tides
Oakdale, 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 6:55AMSunset 4:47PM Friday November 27, 2020 3:49 PM PST (23:49 UTC) Moonrise 3:33PMMoonset 4:17AM Illumination 95% Phase: Waxing Gibbous; Moon at 13 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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PZZ531 San Francisco Bay South Of The Bay Bridge- 254 Pm Pst Fri Nov 27 2020
This afternoon..NW winds around 5 kt.
Tonight..N winds around 5 kt.
Sat..NW winds up to 10 kt.
Sat night..NW winds 5 to 10 kt.
Sun..NW winds around 5 kt.
Sun night..NW winds 5 to 10 kt.
Mon..NW winds 5 to 15 kt.
Tue..N winds 5 to 10 kt.
PZZ500 254 Pm Pst Fri Nov 27 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Continued light winds over the coastal waters the rest of Friday and into Saturday with high pressure centered off the california coast. Some strengthening will occur Saturday afternoon, as winds turn more northerly. Moderate northwest swell continues through the weekend. A stronger northwest swell is expected to arrive next Monday into Tuesday.


7 Day Forecast for Marine Location Near Oakdale, CA
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location: 37.76, -120.84     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 272118 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 118 PM PST Fri Nov 27 2020

SYNOPSIS. Dry conditions with mild afternoons and cool nights are forecast through the weekend. Only opportunity for any sort of light precipitation will be on Monday, and that will be limited to far northern California. Dry, mild, and possibly wind conditions are expected around the middle part of next week.

DISCUSSION. Aside a thin band of passing high clouds, mostly clear conditions prevail over central and northern California this afternoon. These mostly clear skies have provided GOES-West satellite with excellent viewing conditions of the finer details over the Golden State. For example, visible imagery shows the snowpack in the higher elevations of the Sierra and Cascades. Unfortunately, not much (if any) new snow will fall on the present snowpack as we wrap up November and enter the first month of meteorological winter. More on that in the extended discussion .

The locally strong winds from earlier in the Sierra and adjacent foothills have been subsiding since daybreak. This is a result of the relaxing surface pressure gradients: Reno to Sacramento has dropped from 8.3 mb to 5.6 mb within the last 6 hours. We'll continue to see these gradients relax as the upper level low in the Great Basin continues to dive south away from our area. Despite the mostly clear skies, most Valley locations are running several degrees cooler compared to 24 hours ago. Highs this afternoon will warm to the upper 50s to middle 60s, equating to near or slightly above late November climatological normals.

The dry airmass and light winds will promote efficient radiational cooling with many Valley communities approaching the freezing mark overnight and into Saturday morning. Some rural areas in Sacramento and San Joaquin Counties absent of the urban heat island influence may see sunrise temperatures in the upper 20s.

Low-amplitude ridge sets up over northern California and the Pacific Northwest on Saturday, allowing for dry and mild temperatures to continue again tomorrow. Similar conditions are forecast again on Sunday.

Upper level trough approaches the Pacific Northwest on Monday. While far northwest California will likely see some minor rain/snow amounts, the Sacramento Valley and northern Sierra will very likely remain dry. Temperatures will remain fairly steady day-to-day with most Valley locations in the 60s. // Rowe

EXTENDED DISCUSSION (Tuesday THROUGH Friday). Upper level trough digs into the Great Basin on Tuesday. This will result in a renewed opportunity of offshore surface pressure gradients, though the strength will largely depend on the placement and orientation of the digging trough. Fuel-moisture levels will need to be closely monitored as they will continue to trend drier through early next week. Extended forecast through next week looks bleak for precipitation chances as the majority of both European and American ensemble members remain completely dry. // Rowe

AVIATION. VFR conditions next 24 hours. Winds generally below 10 kts at TAF sites.

STO WATCHES/WARNINGS/ADVISORIES. None.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PCOC1 - 9415144 - Port Chicago, CA 67 mi50 min WNW 2.9 G 4.1 59°F 56°F1022.1 hPa (-1.6)
SFXC1 - San Francisco Bay Reserve, CA 70 mi65 min E 2.9
RTYC1 - 9414523 - Redwood City, CA 75 mi50 min W 2.9 G 4.1 62°F 57°F1022.7 hPa (-1.4)

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Modesto City-County Airport - Harry Sham Field, CA11 mi57 minSE 310.00 miFair61°F27°F27%1022.3 hPa
Stockton, Stockton Metropolitan Airport, CA24 mi55 minS 610.00 miFair64°F25°F23%1022.2 hPa

Link to 5 minute data for KMOD

Wind History from MOD (wind in knots)
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Last 24hrNW8NW7NW8W7W7W7W5SE3SE4CalmCalmCalmCalmCalmE4E5E5E4Calm3SE6CalmE3SE3
1 day agoNW17NW10NW9NW7NW9NW11NW12NW12NW10NW12NW13NW10NW13NW13NW13NW13NW13NW15N10N7NW6N8N9NW11
2 days agoCalmCalmCalmCalmCalmE4E4SE5CalmCalmCalmCalmE3CalmSE3CalmCalmN6NW12W15NW13NW13
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Tide / Current Tables for Grant Line Canal (drawbridge), Old River, California
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Grant Line Canal (drawbridge)
Click for Map
Fri -- 12:38 AM PST     0.03 feet Low Tide
Fri -- 04:20 AM PST     Moonset
Fri -- 06:24 AM PST     2.64 feet High Tide
Fri -- 06:59 AM PST     Sunrise
Fri -- 12:01 PM PST     0.69 feet Low Tide
Fri -- 03:34 PM PST     Moonrise
Fri -- 04:47 PM PST     Sunset
Fri -- 06:08 PM PST     3.63 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.10.10.411.72.32.62.62.21.71.20.80.70.91.42.12.93.43.63.532.31.50.8

Tide / Current Tables for Brandt Bridge, San Joaquin River, California Current
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Brandt Bridge
Click for Map
Fri -- 01:36 AM PST     0.00 knots Slack
Fri -- 04:13 AM PST     0.52 knots Max Flood
Fri -- 04:20 AM PST     Moonset
Fri -- 06:22 AM PST     -0.00 knots Slack
Fri -- 06:58 AM PST     Sunrise
Fri -- 09:43 AM PST     -0.67 knots Max Ebb
Fri -- 12:38 PM PST     0.00 knots Slack
Fri -- 03:32 PM PST     0.69 knots Max Flood
Fri -- 03:33 PM PST     Moonrise
Fri -- 04:47 PM PST     Sunset
Fri -- 06:13 PM PST     -0.01 knots Slack
Fri -- 10:34 PM PST     -1.12 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.7-0.30.10.40.50.40.1-0.2-0.5-0.6-0.7-0.5-0.30.10.50.70.70.50.1-0.3-0.7-1-1.1-1.1

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 Sacramento, CA
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weather_mapweather_map weather_map


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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.