Sunday, January19, 2020
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L-36.com


Marine Weather and Tides
Nevada City, CA

Version 3.4
NOTICE
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 7:19AMSunset 5:12PM Sunday January 19, 2020 4:33 AM PST (12:33 UTC) Moonrise 2:28AMMoonset 1:02PM Illumination 32% Phase: Waning Crescent; Moon at 24 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 Nevada City, CA
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location: 39.25, -121     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 191130 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 330 AM PST Sun Jan 19 2020

SYNOPSIS. Some fog possible in portions of the Central Valley and mountain valleys this morning. Mostly dry and mild today with precipitation returning late Monday into Wednesday.

DISCUSSION. Upper ridging near 120W this morning with considerable amounts of baroclinic cirrus feeding into it from approaching mid latitude wave. Despite higher clouds, some fog has developed overnight in portions of the Northern San Joaquin Valley. Potential for patchy fog to further develop north into the Southern Sac Valley and Delta overnight. Fog lifted into stratus deck yesterday in the Northern San Joaquin Valley. This likely to occur again today and will be slow to dissipate, if at all, under abundant higher cloud cover. Rising 1000-500mb thicknesses will lead to slightly warmer temperatures today for most areas in the CWA with highs near to slightly above normal.

Second mid-latitude wave approaches Monday but weakens and gets drawn into progressing long wave. Associated baroclinic zone weakens as it approaches the coast. A stronger Pacific frontal system follows quickly behind it and begins to spread associated precip into the Coastal range and northern portions of the CWA Monday night. Surface winds increase Monday night as front draws closer. Widespread precip then spreads over interior NorCal Tuesday morning as frontal system moves inland. Snow begins in the mountains of Western Plumas and Northern Sierra Nevada Tuesday morning. Bulk of associated precip moves through during the day Tuesday. Post-frontal showers Tuesday night into Wednesday can be expected, especially over our eastern mountains. Snow levels start out around 4000 to 5500 Monday night, lowering to 3500 to 4500 feet by Wednesday morning. Model QPF has decreased some from previous runs and suggests snowfall amounts of 4-12 inches generally AOA 5000 feet with locally higher amounts over Lassen Peak. Rainfall amounts in the Central Valley range from under a tenth in the Northern San Joaquin Valley to above half an inch in the Northern Sacrament Valley. Around an inch of rain is expected in the wetter foothills locations. Breezy Tuesday as the front moves through with locally windy conditions over higher terrain.

Precip turns showery Tuesday afternoon into evening with fropa. Lingering showers possible overnight into Wednesday morning, mainly over the mountains. Drier weather expected midweek with warming temperatures as upper ridging returns. Weak waves moving through the ridge will keep a slight chance of light showers over the Coastal and Shasta mountain Wed/Thu, otherwise dry with some night/morning valley fog likely.

PCH

EXTENDED DISCUSSION (Thursday THROUGH Sunday). The beginning of the forecast period will start out dry, under upper level ridging. The exception will be some light showers, mainly over the northern mountains. Forecast highs in the Valley will be in the upper 50s to low 60s, with mountain locations in the mid 30s to low 50s. Uncertainty arises late in the period as model guidance suggests the potential for widespread precipitation next weekend, but confidence is low given model disagreement. Specific details will likely change so stay tuned.

AVIATION. VFR conditions next 24 hours, except for periods of MVFR conditions, locally IFR/LIFR, mainly south of KMYV through 18z-20z today due to BR/FG.

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 91 mi49 min E 7
PCOC1 - 9415144 - Port Chicago, CA 99 mi46 min 49°F

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Nevada County Air Park, CA2 mi59 minN 010.00 miFair46°F19°F34%1022.3 hPa
Emigrant Gap, Blue Canyon Nyack Airport, CA16 mi42 minN 010.00 miFair50°F1°F14%1020.8 hPa
Auburn Municipal Airport, CA21 mi59 minE 610.00 miFair43°F33°F71%1023 hPa

Link to 5 minute data for KGOO

Wind History from GOO (wind in knots)
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Last 24hrE5E6E5E3CalmCalmCalmCalmNW4CalmCalm--CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
1 day agoCalmCalm3SE5SE8SE6CalmCalmCalmCalmCalmCalmCalmE4E5CalmCalmCalmCalmCalmE4CalmCalmCalm
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Tide / Current Tables for Sacramento #4, Sacramento River, California
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Sacramento #4
Click for Map
Sun -- 02:29 AM PST     Moonrise
Sun -- 02:35 AM PST     2.11 feet High Tide
Sun -- 07:20 AM PST     Sunrise
Sun -- 09:20 AM PST     0.49 feet Low Tide
Sun -- 01:05 PM PST     Moonset
Sun -- 02:23 PM PST     3.06 feet High Tide
Sun -- 05:12 PM PST     Sunset
Sun -- 11:16 PM PST     0.05 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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11.622.11.91.61.20.90.60.50.61.11.92.6332.82.41.91.410.50.20.1

Tide / Current Tables for Clarksburg #4, Sacramento River, California
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Clarksburg #4
Click for Map
Sun -- 01:25 AM PST     2.11 feet High Tide
Sun -- 02:29 AM PST     Moonrise
Sun -- 07:20 AM PST     Sunrise
Sun -- 07:50 AM PST     0.49 feet Low Tide
Sun -- 01:05 PM PST     Moonset
Sun -- 01:14 PM PST     3.06 feet High Tide
Sun -- 05:13 PM PST     Sunset
Sun -- 09:46 PM PST     0.05 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.72.12.11.81.51.10.70.50.50.81.42.22.83.132.72.31.81.30.80.40.10.10.4

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 (7,2,3,4)
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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 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.