Tuesday, December10, 2019
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Marine Weather and Tides
Fiddle, CA

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:09AMSunset 4:44PM Tuesday December 10, 2019 5:12 AM PST (13:12 UTC) Moonrise 3:56PMMoonset 5:28AM Illumination 98% 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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PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 208 Am Pst Tue Dec 10 2019
Today..E winds up to 10 kt. A chance of rain this afternoon.
Tonight..E winds up to 10 kt. A chance of rain.
Wed..NE winds up to 10 kt. A slight chance of rain.
Wed night..E winds up to 10 kt. A slight chance of rain.
Thu..S winds up to 10 kt. A slight chance of rain.
Thu night..SW winds up to 10 kt.
Fri..W winds up to 10 kt.
Sat..W winds 5 to 15 kt. A chance of rain.
PZZ500 208 Am Pst Tue Dec 10 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light winds will persist over the coastal waters as a weak system approaches. A weak cold front will turn winds southerly today and bring a chance of showers this evening and into Wednesday. Light to moderate southerly winds will then continue through much of the week before shifting back out of the northwest towards the weekend. Moderate northwest swell will also persist before a longer period northwest swell arrives on Thursday. Wave heights will gradually build heading into the coming weekend creating hazardous seas conditions, particularly for smaller vessels.


7 Day Forecast for Marine Location Near Fiddle, CA
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location: 38.52, -120.78     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 101045 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 245 AM PST Tue Dec 10 2019

SYNOPSIS. Quiet weather today with areas of morning valley fog and near average temperatures. Rain chances return to the region tonight with more widespread precipitation expected late in the week.

DISCUSSION. The upper ridge that brought the dry weather to the region on Monday is moving east as the next upstream short-wave trough approaches. Satellite imagery shows high clouds out ahead of the system already moving over NorCal.

Fog has been developing in the southern half of the Sacramento Valley southward into the northern San Joaquin Valley since late Monday evening. So far, the most extensive dense fog has been in the Sacramento area with patches of dense fog in around Modesto and across portions of the Motherlode. The extensive high clouds may limit further spread of dense fog, and forecast soundings indicate it may lift to a low stratus deck this morning.

Dry weather will persist today, but a brief period of light precipitation is expected across NorCal tonight as the short-wave and a shot of warm-advection move through interacting with TPW of around 3/4 to 1 inch over the area. QPF of less than a tenth of an inch is likely in the valley, with less than a third of an inch over the mountains. An inch or two of snowfall accumulation will be possible above 5500-6000 feet.

Ridging in the wake of tonight's wave gradually flattens the remainder of the week as strong mid/upper level jet across the eastern Pacific reaches the West Coast. Most of the forecast area is expected to see dry weather Wednesday, except across the mountains north of Redding where warm-advection may allow for some lingering light precipitation.

Light precipitation is then forecast to increase again along a stalled out front by Thursday as warm-advection ramps up and deeper moisture spreads into the region. The front may sag far enough south later Thursday into Friday to allow light precipitation to spread across the Sacramento region and into the I-80 corridor over the northern Sierra. Snow levels will be above 8k ft limiting winter travel impacts.

EXTENDED DISCUSSION (Saturday THROUGH Tuesday). Fairly zonal upper level flow is expected to remain over NorCal Saturday. Weak shortwave along the flow will bring a chance of light showers to the area Friday night through Saturday. Another 3 to 6 inches of snow accumulation is possible Saturday mainly for elevations above 5000 feet, though dropping snow levels early Saturday could bring light accumulation down to 4000 to 4500 feet. This could cause some travel issues over mountain passes Saturday.

Zonal flow breaks down behind this weather system as upper level ridging builds over the area Sunday into Monday, bring dry weather back to interior NorCal. Ensembles hinting at wetter weather system impacting the West Coast beginning Tuesday. However confidence is low at this time, so keep an eye out for forecast updates. HEC

AVIATION. IFR/LIFR visibilities across the Central Valley due to fog through 18-21Z, generally areas Marysville and south. Otherwise, VFR visibilities and winds generally less than 10 kts.

STO WATCHES/WARNINGS/ADVISORIES. Dense Fog Advisory until noon PST today for Carquinez Strait and Delta-Central Sacramento Valley-Motherlode-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 70 mi87 min Calm 45°F 1024 hPa
PCOC1 - 9415144 - Port Chicago, CA 74 mi54 min ESE 1.9 G 2.9 48°F 53°F1024 hPa
RCMC1 - 9414863 - Richmond, CA 96 mi54 min 54°F

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Sacramento Mather Airport, CA28 mi22 minENE 510.00 miMostly Cloudy45°F42°F93%1023.7 hPa

Link to 5 minute data for KMHR

Wind History from MHR (wind in knots)
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Last 24hrE3E4E5S5S4S5SE3Calm------Calm----SW3CalmE3SE5SE5----E6CalmE5
1 day agoS11SE8SE6S6S8S6E8E7SE4CalmCalm------------------------Calm
2 days agoSE11S9S9S10SE18
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Tide / Current Tables for Sacramento #4, Sacramento River, California
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Sacramento #4
Click for Map
Tue -- 01:36 AM PST     -0.04 feet Low Tide
Tue -- 05:31 AM PST     Moonset
Tue -- 06:15 AM PST     2.14 feet High Tide
Tue -- 07:12 AM PST     Sunrise
Tue -- 12:34 PM PST     0.67 feet Low Tide
Tue -- 03:58 PM PST     Moonrise
Tue -- 04:44 PM PST     Sunset
Tue -- 05:03 PM PST     3.11 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.2-0-00.51.21.82.12.11.81.51.10.90.70.71.222.83.132.82.31.81.20.8

Tide / Current Tables for Clarksburg #4, Sacramento River, California
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Clarksburg #4
Click for Map
Tue -- 12:06 AM PST     -0.04 feet Low Tide
Tue -- 05:06 AM PST     2.14 feet High Tide
Tue -- 05:30 AM PST     Moonset
Tue -- 07:12 AM PST     Sunrise
Tue -- 11:04 AM PST     0.67 feet Low Tide
Tue -- 03:54 PM PST     3.11 feet High Tide
Tue -- 03:59 PM PST     Moonrise
Tue -- 04:45 PM PST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-00.10.71.41.92.121.81.410.80.70.81.42.32.93.132.72.21.61.10.60.2

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
Wind Forecast for Sacramento, CA (8,2,3,4)
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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 numerious 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.