Sunday, December16, 2018 L-36.com


Marine Weather and Tides
Magalia, CA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:20AMSunset 4:45PM Sunday December 16, 2018 7:19 PM PST (03:19 UTC) Moonrise 1:14PMMoonset 12:39AM Illumination 71% Phase: Waxing Gibbous; Moon at 9 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 Magalia, CA
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location: 39.77, -121.63     debug


Area Discussion for - Sacramento, CA
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Fxus66 ksto 162146
afdsto
area forecast discussion
national weather service sacramento ca
146 pm pst Sun dec 16 2018

Synopsis
A moderate storm system will track over norcal into Monday
causing hazardous travel conditions over the mountains. Drier
weather returns for much of the area this week with the exception
of the far northern areas which will have a chance of showers
into early Wednesday.

Discussion
The weather system is moving through the coastal range this
afternoon with some showers light rain out ahead of the front.

As the front moves closer to the interior upslope areas will
start to get enhanced precipitation. The front will move through
the sacramento area during the late afternoon and evening hours.

Snowfall will be increasing near major pass levels at this time
but remain fairly high through most of the evening hours.

Have ended the advisory for the western plumas county lassen park
and the winter storm warning for the west slopes northern sierra
nevada a couple of hours earlier due to the slightly faster pace
of the storm and amounts dropping off rapidly in the morning.

Snow levels will stay high enough over the far north to lower
snowfall totals over the populated areas roads traveled though
lassen peak could see up to 2 feet of snow. The snow levels
further south look to be near pass level this afternoon into the
early evening before lowering towards midnight and in the late
night hours. The higher totals will be above 6500 to 7000 feet
where up to a foot of snowfall could accumulate below pass levels.

The heaviest snowfall looks to occur from mid to late evening
trough 6 am Monday morning gradually tapering from north to south
after 1 am.

Breezy conditions are likely as the front moves through for most
of the area outside of the crest which will be its normal windy
conditions for winter storms probably in the 50 to 75 mph range
over the peaks.

For the valley a half inch to around an inch and a half of
rainfall can be expected with the highest totals over the north
end of the valley tapering to lowest in the northern san joaquin
valley. As the front moves through the interior rainfall rates
might be sufficient enough for some water buildup of areas with
poor drainage and locations that may get clogged by leaves.

The main part of the system clears the region early Monday
morning with some residual showers lingering mainly over the
mountains during the day before ending in the southern forecast
area. Winds become light in the morning south of sacramento and
with the recent rain some patches of fog forming will be possible
in the morning.

Weak ridging tries to build but the tail end of a system
moving into the pacific northwest will pass through the far
northern part of the state to keep some chances of precipitation
going through Tuesday night.(mainly north of chico in the valley
and well north of i-80 for the mountains) and along the northern
coastal range. To the south expect to stay dry.

Light northerly winds develop on Wednesday as a ridge of high
pressure builds over the region with dry conditions expected
throughout the cwa. Some morning patches of fog will be
possible... Mainly south of sacramento.

.Extended discussion (Thursday through Sunday)
an upper level ridge remains over norcal Thursday before a weak
weather system moves in Thursday night through Friday.

Precipitation with this system would mainly be limited to the
sacramento valley and the mountains. Current forecast liquid
precipitation amounts are fairly low, with less than an inch
expected over the mountains. However, forecast confidence is still
low with this system at this time. Isolated showers could linger
in the far north Saturday. Elsewhere will remain dry. Models bring
another weather system into norcal Sunday, though timing and
intensity of the storm are very uncertain at this time. Hec

Aviation
Pacific frontal system moves through norcal this afternoon and
tonight. Widespread MVFR ifr conditions will continue north of
kmyv through 18z Monday. Elsewhere,VFR conditions expected to
predominate through 22z with local MVFR visibilities in the
central valley until 18z Monday. Southerly wind gusts 20-30 kts
possible at TAF sites this afternoon and evening as the front
moves south.

Sto watches warnings advisories
Winter weather advisory until 6 am pst Monday for western plumas
county lassen park.

Winter storm warning until 10 am pst Monday for west slope
northern sierra nevada.



Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Chico Municipal Airport, CA12 mi28 minSE 16 G 226.00 miRain55°F55°F100%1015.6 hPa
Oroville Municipal Airport, CA19 mi27 minSSW 410.00 miLight Rain56°F53°F90%1016.7 hPa

Wind History from CIC (wind in knots)
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Last 24hr--CalmCalmCalmSE3S5SE8S9SE9SE10S8SE8SE12S11SE10SE13SE11SE12E17
G26
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G22
1 day ago--SE7SE8SE5SE6S8S8SE6W3N4NW4NW4NW6NW7NW5NW5CalmCalmNW4CalmCalmSE4CalmCalm
2 days ago--CalmNE6Calm--CalmCalmCalmNW3N3CalmCalmCalmW4S4E12E17SE16
G23
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G21
--SE16SE13SE12

Tide / Current Tables for Sacramento #4, Sacramento River, California
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Sacramento #4
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Sun -- 12:39 AM PST     Moonset
Sun -- 12:56 AM PST     1.92 feet High Tide
Sun -- 07:17 AM PST     Sunrise
Sun -- 08:43 AM PST     0.20 feet Low Tide
Sun -- 01:12 PM PST     Moonrise
Sun -- 02:17 PM PST     2.51 feet High Tide
Sun -- 04:46 PM PST     Sunset
Sun -- 10:13 PM PST     0.45 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.81.91.91.71.410.60.40.20.20.51.11.72.22.52.52.21.91.51.10.80.60.50.6

Tide / Current Tables for Clarksburg #4, Sacramento River, California
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Clarksburg #4
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Sun -- 12:39 AM PST     Moonset
Sun -- 07:13 AM PST     0.20 feet Low Tide
Sun -- 07:16 AM PST     Sunrise
Sun -- 01:08 PM PST     2.51 feet High Tide
Sun -- 01:12 PM PST     Moonrise
Sun -- 04:46 PM PST     Sunset
Sun -- 08:43 PM PST     0.45 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.91.81.61.30.90.50.30.20.30.71.31.92.32.52.42.21.81.310.70.50.50.81.3

Weather Map and Satellite Images
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GOES 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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Sacramento, CA (22,6,7,8)
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Ground Weather Radar Station Beal AFB, CA
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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.