Sunday, December8, 2019
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Marine Weather and Tides
Truckee, 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 7:06AMSunset 4:38PM Sunday December 8, 2019 7:07 PM PST (03:07 UTC) Moonrise 2:47PMMoonset 3:24AM Illumination 92% Phase: Waxing Gibbous; Moon at 12 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 Truckee, CA
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location: 39.35, -120.19     debug


Area Discussion for - Reno, NV
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FXUS65 KREV 082104 AFDREV

Area Forecast Discussion National Weather Service Reno NV 104 PM PST Sun Dec 8 2019

SYNOPSIS.

A quiet weather pattern will be in place over the next couple of days with potential for valley fog in the morning. A weak weather system could bring light snow showers to the mountains from late Tuesday into Wednesday. A stronger weather system, with high snow levels, could arrive by Friday.

SHORT TERM.

There will be a break between storms tonight and Monday. However, the recent heavy rain along with melting snow could create some travel hassles tonight. Wet roads and sidewalks will freeze creating slick and icy spots. Also, freezing fog is a good bet for many valleys in the Sierra and along the Sierra Front tonight. Those traveling overnight or commuting tomorrow morning may need to leave extra time because of icy roads and poor visibility due to fog.

Otherwise, a break in the weather, with light winds both in valleys and at ridgetops, will persist through tomorrow. Westerly winds may increase for Sierra ridges staring Monday night ahead of the next (weak) low-pressure system. JCM

LONG TERM. Tuesday through the Winter Solstice .

A few weather systems are forecast to pass through the region over the next two weeks.

First system is set to arrive late Tuesday afternoon and be gone by Wednesday morning. Not much to write about here, with a just a few light snow showers in the Sierra. Accumulations should stay at or below a couple inches.

Next system should set up a bit farther to our the north starting Thursday, which means a warm up is on tap for middle and end of the week. Ensembles also predicting high probability of weak AR reaching the northern California coast and pushing inland with this system, which could lead to some decent precipitation totals Friday into Saturday. Snow levels here could get rather high 8000-9000 feet for the Tahoe Basin and Mono County. Definitely something to keep an eye on over the next few days with saturated soils and and potentially high snow levels.

Looking ahead to the week of Dec 15-21, ensembles continue the active pattern with troughing along the west coast and two systems arriving around Dec 18 and Dec 20-21. This is a bit beyond the reliability of the Atmospheric River tools (10 days), so difficult to give much confidence if these will be significant events. However the Dec 20-21 is the kickoff weekend for holiday travel, so even a small event could be impactful for Sierra travel. Brong

AVIATION.

Fog and low clouds are expected to develop tonight for many Sierra valleys and along the Sierra Front Range. Confidence is high for dense fog at KTRK after midnight. There is also a good chance for fog or low clouds to develop tonight at KTVL, KRNO, KMMH, KCXP and KRNO and at other Sierra terminals. This fog could create IFR/LIFR conditions and icy runways tonight into Monday morning.

Otherwise, light winds are forecast both in valleys and ridges through tomorrow. Westerly ridge winds may increase Monday night into Tuesday ahead of the next low-pressure system. This next system will bring chances for mountain snow showers Tuesday afternoon into Wednesday. A stronger weather system with high snow levels could arrive by Friday. JCM

REV Watches/Warnings/Advisories. NV . None. CA . None.

For more information from the National Weather Service visit . http://weather.gov/reno


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Truckee-Tahoe, CA3 mi72 minS 37.00 miPartly Cloudy30°F30°F100%1018.3 hPa
Reno, Reno Tahoe International Airport, NV24 mi72 minNNW 310.00 miMostly Cloudy44°F34°F68%1017 hPa

Link to 5 minute data for KTRK

Wind History from TRK (wind in knots)
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Last 24hrSE3E3CalmS4CalmSW3SW4CalmE3CalmCalmCalm------------Calm------CalmCalm
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2 days agoCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm--CalmCalmCalmCalmW3S11SW12
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Tide / Current Tables for Sacramento #4, Sacramento River, California
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Sacramento #4
Click for Map
Sun -- 12:06 AM PST     0.15 feet Low Tide
Sun -- 03:28 AM PST     Moonset
Sun -- 04:30 AM PST     1.98 feet High Tide
Sun -- 07:11 AM PST     Sunrise
Sun -- 11:19 AM PST     0.43 feet Low Tide
Sun -- 02:53 PM PST     Moonrise
Sun -- 04:16 PM PST     2.83 feet High Tide
Sun -- 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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0.20.40.91.51.921.81.41.10.80.60.40.511.82.52.82.82.52.11.61.20.70.4

Tide / Current Tables for Clarksburg #4, Sacramento River, California
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Clarksburg #4
Click for Map
Sun -- 03:22 AM PST     1.98 feet High Tide
Sun -- 03:28 AM PST     Moonset
Sun -- 07:10 AM PST     Sunrise
Sun -- 09:49 AM PST     0.43 feet Low Tide
Sun -- 02:53 PM PST     Moonrise
Sun -- 03:07 PM PST     2.83 feet High Tide
Sun -- 04:45 PM PST     Sunset
Sun -- 11:23 PM PST     0.04 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.61.11.621.91.71.310.70.50.40.71.322.62.82.72.521.510.60.20.1

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 Reno, NV (22,6,7,8)
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Ground Weather Radar Station Reno, NV
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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.