Tuesday, January16, 2018 L-36.com


Marine Weather and Tides
Coloma, 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 7:18AMSunset 5:10PM Tuesday January 16, 2018 5:22 AM PST (13:22 UTC) Moonrise 6:58AMMoonset 5:04PM Illumination 0% Phase: New Moon; Moon at 29 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- 240 Am Pst Tue Jan 16 2018
Today..SE winds 5 kt...becoming nw in the afternoon. Chance of rain in the morning.
Tonight..N winds 10 kt.
Wed..E winds 5 kt...becoming nw in the afternoon.
Wed night..SW winds 10 kt.
Thu..S winds 5 to 15 kt...becoming w. Chance of rain, then chance of showers.
Fri..W winds 5 to 15 kt. Chance of showers, then slight chance of showers.
Sat..W winds 10 kt.
PZZ500 240 Am Pst Tue Jan 16 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Weak high pressure off the california coast will keep light northwest winds for today. Winds will switch southerly late tonight and Wednesday as a low pressure system deveops off the british columbia coast and pushes the high south. Large swells will impact the beaches through early tonight before decreasing. A larger swell with long period will arrive Thursday.

7 Day Forecast for Marine Location Near Coloma, CA
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location: 38.81, -120.92     debug


Area Discussion for - Sacramento, CA
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Fxus66 ksto 161211
afdsto
area forecast discussion
national weather service sacramento ca
411 am pst Tue jan 16 2018

Synopsis
A weak and warm weather system passes through the region this
morning, followed by stronger and colder storm system Thursday-
Friday. Moderate snowfall below pass levels for mountain travel
impacts. Next system moves through Sunday-Monday.

Discussion
Weak frontal band now moving through northern california bringing
generally light precipitation. So far, precipitation amounts have
been less than about one quarter inch. The passage of this front
over the sacramento valley has mixed the atmosphere enough to
break up the fog a bit and visibilities have improved so was
able to cancel the dense fog advisory. The light precipitation
should end most places by late this morning as the weak front
moves eastward with just a few showers over the sierra lasting
into the afternoon. With light precipitation amounts and snow
levels at or above pass levels, mountain travel impacts should be
minor. Upper level ridging will end the shower threat after sunset
tonight. Fog will form in the valleys again tonight but amount of
cloud cover will determine how dense this fog becomes. Warmer
airmass and a bit more Sun should allow for a little warming on
Wednesday afternoon with daytime highs remaining a little above
normal.

Next pacific storm system pushes onto the north coast Wednesday
night then pushes across the north state on Thursday.

Precipitation amounts will be a little heavier than the system
moving through this morning with heaviest amounts expected over
the mountains. This will be a colder system with snow levels
dropping to pass levels by Thursday afternoon. Snow levels
continue to fall in the cold air behind the frontal system
Thursday night. Snow levels well below pass levels and moderate
precipitation will bring likely mountain travel impacts. General
troughing over the west coast will keep showers going on Friday.

Total snow amounts over the sierra could add up to several inches
to over a foot so winter storm watch now in place Thursday to
Friday afternoons still looks good. Colder airmass will bring
down daytime highs Friday to below normal for this time of year.

.Extended discussion (Saturday through Tuesday)
short-lived upper level ridge will build across the area on
Saturday, resulting in generally dry conditions. The ridge of high
pressure will be displaced as an upper trough deepens along the
west coast. Forecast models similar in bringing widespread
precipitation across interior norcal Sunday into Monday as
associated pacific frontal boundary pushes through. There are
still some minor differences in timing as well as precipitation
amounts this far out. Regardless, mountain travel impacts could
be possible given the cold nature of this system. Breezy to gusty
winds could be possible as the system moves through.

Lingering showers will continue early Tuesday as the system exits
the area. Guidance indicates a brief period of dry weather before
the next system moves in around the middle of next week, but
models solutions diverge significantly. Nevertheless, it appears
that active weather could continue through the extended period.

Temperatures will gradually warm up by the end of the forecast
period, but should remain near or slightly below normal.

Aviation
MVFR ifr conditions, locally lifr, continue across interior norcal
as frontal system pushes through. Precipitation can be expected
generally through 14z across TAF sites. Conditions improve by 20
Tuesday but areas of MVFR ifr are expected to continue with the
potential for valley fog Wednesday morning. Winds will remain
under 10 knots.

Sto watches warnings advisories
Winter storm watch from Thursday afternoon through Friday
afternoon for west slope northern sierra nevada-western plumas
county lassen park.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SFXC1 - San Francisco Bay Reserve, CA 72 mi98 min ENE 2.9 49°F 1022 hPa
PCOC1 - 9415144 - Port Chicago, CA 79 mi53 min ENE 13 G 15 50°F 51°F1022.3 hPa
RCMC1 - 9414863 - Richmond, CA 100 mi53 min NNW 2.9 G 2.9 54°F 53°F1021.6 hPa

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Auburn Municipal Airport, CA13 mi28 minE 75.00 miMostly Cloudy50°F46°F88%1022.7 hPa
Lincoln Regional Karl Harder Field, CA24 mi28 minWNW 55.00 miMostly Cloudy23°F23°F100%1023 hPa

Wind History from AUN (wind in knots)
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Last 24hrE5E3E3E5E5E7W10NE3S4E4CalmW3CalmCalmE6CalmE6SE6E5E3CalmCalmE4E5
1 day agoSE5CalmCalmCalmCalmCalmE5CalmCalmW7E4W6CalmCalmE5W3E6CalmE8
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CalmE4SE4E5E4
2 days agoCalmCalmCalmE5CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmE3E4CalmCalmCalmE5Calm

Tide / Current Tables for Sacramento #4, Sacramento River, California
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Sacramento #4
Click for Map
Tue -- 02:41 AM PST     -0.07 feet Low Tide
Tue -- 06:59 AM PST     Moonrise
Tue -- 07:21 AM PST     Sunrise
Tue -- 07:32 AM PST     2.58 feet High Tide
Tue -- 01:57 PM PST     0.92 feet Low Tide
Tue -- 05:07 PM PST     Moonset
Tue -- 05:10 PM PST     Sunset
Tue -- 05:58 PM PST     3.15 feet High Tide
Tue -- 06:18 PM PST     New Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.60.2-0-00.41.222.52.52.321.61.210.91.32.12.93.23.12.82.41.81.3

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

Tue -- 02:41 AM PST     -0.07 feet Low Tide
Tue -- 06:59 AM PST     Moonrise
Tue -- 07:21 AM PST     Sunrise
Tue -- 07:32 AM PST     2.58 feet High Tide
Tue -- 01:57 PM PST     0.93 feet Low Tide
Tue -- 05:07 PM PST     Moonset
Tue -- 05:10 PM PST     Sunset
Tue -- 05:58 PM PST     3.16 feet High Tide
Tue -- 06:18 PM PST     New Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.60.3-0-00.41.222.52.62.321.61.210.91.32.12.93.23.12.82.41.81.3

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 (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.