Monday, December9, 2019
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Marine Weather and Tides
Penn Valley, 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 7:12AMSunset 4:44PM Monday December 9, 2019 5:46 PM PST (01:46 UTC) Moonrise 3:22PMMoonset 4:28AM Illumination 96% 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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7 Day Forecast for Marine Location Near Penn Valley, CA
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location: 39.21, -121.2     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 092300 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 300 PM PST Mon Dec 9 2019

SYNOPSIS. Quiet weather into Tuesday with near average temperatures. Precipitation chances return to areas north of Sacramento on late Tuesday with more widespread precipitation expected late in the week.

DISCUSSION. The dense fog this morning lingered a bit longer then expected but has burned off and we are now enjoying clear skies throughout the region. The fog did hold temperatures down this morning but the afternoon sun is helping them warm nicely and we should see them top out close to what we saw yesterday minus a few degrees. An approaching short wave trough and trough pushing into the PacNW will bring increasing high clouds this evening and continuing overnight. The high clouds will likely limit some fog development tonight but conditions still favor some patchy dense fog across the southern Sacramento Valley south into the San Joaquin Valley.

The mentioned short wave trough will push east through NorCal later Tuesday into Wednesday. This will bring the chance for some light showers but moisture will be lacking and that will keep the precip light. The best chances will also be over the northern part of the area where the forcing is a bit better. Snow levels look to be in the 5000 to 6000 range but little to no snow accumulation is expected.

Short wave riding moves in on Wednesday drying things out but we look to remain mainly cloudy. A trough crashing into the PacNW Thursday will bring warm air advection and push a frontal boundary into the region. This will bring the return of precip chances with the best chances in the higher elevations but some light showers are expected in the valley Thursday afternoon/evening. With the warmer air building into the area we will see snow levels rise well above pass level.

-CJM

EXTENDED DISCUSSION (Friday THROUGH Monday).

A system will impact the area Friday through the weekend bringing periods of rain and mountain snow to northern California. Precipitation on Friday mainly looks limited to the mountains and foothills with snow levels high over 7kft. As a cold front moves over the area Friday night into Saturday, the Valley may see some light rain as well. Mountain snow looks to continue into the afternoon on Saturday with snow levels dropping to pass level by Saturday morning which may cause some difficulties traveling. Dry weather returns Sunday as ridging builds over the west coast.

AVIATION.

VFR will prevail until fog is expected to develop at Sacramento TAF sites southward near 09-10Z. IFR/LIFR visibilities will be possible continuing through 18Z. Winds generally under 10 knots.

STO WATCHES/WARNINGS/ADVISORIES. None.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SFXC1 - San Francisco Bay Reserve, CA 82 mi62 min WNW 7 51°F 1022 hPa50°F

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Nevada County Air Park, CA10 mi72 minN 010.00 miFair46°F41°F82%1021 hPa
Marysville, Beale Air Force Base, CA14 mi1.8 hrsSSW 38.00 miFair54°F46°F75%1021 hPa
Auburn Municipal Airport, CA19 mi72 minN 010.00 miFair50°F42°F76%1021.3 hPa
Marysville, Yuba County Airport, CA21 mi54 minN 010.00 miFair52°F45°F77%1022.1 hPa
Lincoln Regional Karl Harder Field, CA22 mi72 minN 010.00 miFair52°F46°F82%1021.3 hPa

Link to 5 minute data for KGOO

Wind History from GOO (wind in knots)
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Tide / Current Tables for Sacramento, Sacramento River, California
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Sacramento #4, Sacramento River, California
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Sacramento #4
Click for Map
Mon -- 12:53 AM PST     0.04 feet Low Tide
Mon -- 04:28 AM PST     Moonset
Mon -- 05:24 AM PST     2.06 feet High Tide
Mon -- 07:11 AM PST     Sunrise
Mon -- 11:56 AM PST     0.56 feet Low Tide
Mon -- 03:23 PM PST     Moonrise
Mon -- 04:38 PM PST     2.97 feet High Tide
Mon -- 04:44 PM PST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.100.411.6221.81.51.10.80.60.60.81.52.32.932.82.521.510.5

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 (20,4,5,8)
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Ground Weather Radar Station Beal AFB, 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.