Monday, November20, 2017 L-36.com


Marine Weather and Tides
Nevada City, CA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:53AMSunset 4:48PM Monday November 20, 2017 7:36 AM PST (15:36 UTC) Moonrise 8:40AMMoonset 6:45PM Illumination 4% 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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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 201100
afdsto
area forecast discussion
national weather service sacramento ca
300 am pst Mon nov 20 2017

Synopsis
Weather system will bring rain chances to the region today. Mainly
dry weather is then expected for the remainder of the week with
rain chances limited to the northern mountains.

Discussion
Cloudy skies across interior norcal as the next weather system
moves into the region. Measurable rain has so far been limited to
the coast range where amounts up to two tenths of an inch have
been reported since late Sunday evening. So far, only sprinkles
have been occurring over the sacramento valley and far northern
sierra nevada.

Current temperatures are considerably milder compared to 24 hours
ago and range from the upper 30s and lower 40s in the mountain
valleys to the upper 40s and lower 50s in the central valley.

Mostly light precipitation is expected across interior norcal
today as we catch the tail end of a system moving through the
pacnw. Satellite imagery shows a wide plume of deep moisture (tpw
of around 1.5 inches) moving up from the southwest. Warm-advection
and terrain will be the main forcing mechanisms as the cold front
remains to the north, and precip in the valley will occur mainly
to the north of sacramento. Heaviest amounts will be in the
mountains where up to an inch may occur into this evening. Snow
levels will remain above 10k feet.

Dry weather returns Tuesday and Wednesday as high pressure
strengthens over the west ahead of the deepening trough over the
gulf of alaska. Temperatures will be unseasonably mild with upper
60s and lower 70s expected through the central valley (around 10
degrees above average).

Another weak system will move through the ridge on thanksgiving
and may bring even lighter QPF (than the current system) to far
northern california.

.Extended discussion (Friday through Monday)
weak system will be exiting the area on Friday with a few
lingering showers across mountains. Snow levels will remain high,
so not expecting any impact there, other than some wet roads. Rest
of the extended period characterized by high model uncertainty.

Ecmwf and GFS out of phase with subsequent waves, leading to low
confidence in timing and extent of precipitation for the weekend
into early next week. ECMWF fairly wet for Sunday into Monday
while GFS holds off until Monday night-Tuesday. Have left low
chance pops across much of the area through the period until
better agreement is shown. As it stands now, snow levels look high
(above 8-9k feet through the weekend), then perhaps dropping
below pass levels by Monday. Will be something to watch depending
on which solution verifies. Temperatures will remain mild through
the period, around 4-10 degrees above normal for this time of
year.

Aviation
Showers possible today with areas of MVFR conditions from time to
time in heavier showers. Winds generally 10 kts or less.

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 mi112 min Calm 53°F 1018 hPa50°F
PCOC1 - 9415144 - Port Chicago, CA 99 mi49 min E 1.9 G 2.9 56°F 58°F1018.1 hPa

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Nevada County Air Park, CA2 mi57 minSE 9 G 143.00 miOvercast45°F42°F93%1019.3 hPa
Emigrant Gap, Blue Canyon Nyack Airport, CA16 mi45 minSE 8 G 140.75 miLight Rain Fog/Mist39°F39°F100%1018.2 hPa
Auburn Municipal Airport, CA21 mi42 minN 09.00 miOvercast54°F44°F72%1019 hPa

Wind History from GOO (wind in knots)
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Last 24hrSE5SE5S5S4S4SE3S3CalmCalmCalmCalmCalmCalmSE3SE5SE8SE5CalmCalmSE3E6SE8SE10
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1 day agoSE3SE4S4S3S3S4S4W4CalmCalmCalmCalmCalmE4E6E3SE3CalmCalmSE4SE4CalmSE3SE5
2 days agoCalmE3NE3N3N4W3NW4NW8NW6NW6NE5E4E9E8E8E5E5E4CalmN3CalmSE4CalmCalm

Tide / Current Tables for Sacramento, Sacramento River, California
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Sacramento
Click for MapNote: These data apply only during low river stages.

Mon -- 03:56 AM PST     -0.10 feet Low Tide
Mon -- 06:53 AM PST     Sunrise
Mon -- 08:40 AM PST     Moonrise
Mon -- 08:50 AM PST     2.33 feet High Tide
Mon -- 03:12 PM PST     0.76 feet Low Tide
Mon -- 04:49 PM PST     Sunset
Mon -- 06:49 PM PST     Moonset
Mon -- 07:11 PM PST     2.94 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.60.2-0-0.10.20.91.62.22.32.21.91.51.10.90.80.91.62.52.92.92.72.31.8

Tide / Current Tables for Sacramento #4, Sacramento River, California
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Sacramento #4
Click for Map
Mon -- 03:56 AM PST     -0.10 feet Low Tide
Mon -- 06:53 AM PST     Sunrise
Mon -- 08:40 AM PST     Moonrise
Mon -- 08:50 AM PST     2.32 feet High Tide
Mon -- 03:12 PM PST     0.76 feet Low Tide
Mon -- 04:49 PM PST     Sunset
Mon -- 06:49 PM PST     Moonset
Mon -- 07:11 PM PST     2.93 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.60.2-0-0.10.20.91.62.22.32.21.91.51.10.90.80.91.62.52.92.92.62.31.8

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralWestCoast    EDIT
Geos

Wind Forecast for Sacramento, CA (10,2,3,4)
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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 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.