Monday, March30, 2020
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Marine Weather and Tides
Truckee, 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 6:45AMSunset 7:24PM Monday March 30, 2020 6:45 AM PDT (13:45 UTC) Moonrise 9:29AMMoonset 12:00AM Illumination 39% Phase: Waxing Crescent; Moon at 6 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 300958 AFDREV

Area Forecast Discussion National Weather Service Reno NV 258 AM PDT Mon Mar 30 2020

SYNOPSIS.

A broad area of low pressure over the northwest US will keep brisk and chilly conditions well north of I-80 into early April, with periods of light rain or snow through Tuesday night. Elsewhere, some moderation in temperatures will occur with mainly dry and breezy conditions through Tuesday, but a significant warmup is unlikely for the first few days of April.

SHORT TERM.

While the weak weather system that brought yesterday's showers has exited Nevada, a larger area of low pressure is moving into the northwest US and southwest Canada, and it's likely to remain in place for at least the next few days. The latest model guidance and ensembles have squashed any ideas of a substantial warmup anytime soon, with areas near the Oregon border remaining particularly chilly through midweek.

The main effect of this low will be breezy conditions today and Tuesday, with peak gusts of 30-35 mph mainly from US-50 northward, and some stronger gusts of 40 mph near the Oregon border today. For Sierra ridges, gusts could reach 70 mph tonight and Tuesday. While these winds aren't overly strong, the long duration of these breezy winds will produce choppy lake conditions, with Lake Wind Advisories going into effect starting this afternoon. Also, these steady winds could produce areas of blowing dust from the deserts and sinks of northwest and west central NV this afternoon and again Tuesday.

For far northeast CA-northwest NV, bands of moisture will bring periods of light rain and high elevation snow today through Tuesday. Then as a shallow cold front pushes through Tuesday night, a few light snow showers are possible occur in the Surprise Valley. A few snow flurries could even linger into Wednesday. Travel impacts are unlikely to be significant, although some light snow accumulations are possible over Cedar Pass for the next couple of nights. Highs in areas north of Susanville- Gerlach are unlikely to surpass 50 degrees for the next few days, and even be stuck in the lower-mid 40s by Wednesday.

For areas south of Susanville-Gerlach, mainly dry conditions will prevail, although a few very light snow showers may develop near the Sierra crest west of Tahoe this afternoon and tonight. Temperatures won't be as cold, and we may even squeeze out one day of slightly above average temperatures on Tuesday before highs head downward again on Wednesday, accompanied by moderate northwest to north breezes. MJD

LONG TERM. Thursday through Monday .

Models continue to trend towards the Pacific ridge farther offshore and troughing over the Pacific Northwest and Great Basin. This will keep a more active forecast pattern through the weekend and possibly into next week as well. A pair of shortwaves will push down through the Pacific Northwest and into northern CA/NV late Friday into Saturday morning, then again Sunday into Monday bringing rain/snow to the region as well as gusty winds.

The main adjustments that we made this morning were to continue increasing pops as these shortwaves move through northern CA/NV. The Friday night-Saturday shortwave looks to mainly bring light snow to the Sierra and northeast California, with gusty winds for the western Nevada valleys. We have also increased the wind forecast for Friday afternoon with the 700 mb flow increasing to around 40 kts.

The second shortwave on Sunday is much less certain as it could swing offshore and bring a shot of moderate snow to the Sierra. On the other hand, it could potentially move inland as a slider, bringing a burst of snow to the western Nevada valleys. Either way, it looks like our Spring "warm-up" will have to wait. We have continued to drop temperatures for the last half of the week and through the weekend. Looking out a little further, this cool and moist pattern may remain with us through mid April. -Hoon

AVIATION.

A weather system passing through the Pacific Northwest will bring gusty winds to the Sierra, northeast California, and western Nevada today and Tuesday. Gusts up to 25-35 kts will be possible with mountain wave turbulence and LLWS late this evening into early Tuesday morning 03-15z. A few showers are possible north of I-80 with MVFR/IFR CIGS/VIS. -Hoon

REV Watches/Warnings/Advisories. NV . Lake Wind Advisory from 2 PM this afternoon to 8 PM PDT this evening for Pyramid Lake in NVZ004.

Lake Wind Advisory from 2 PM to 8 PM PDT Tuesday for Pyramid Lake in NVZ004.

Lake Wind Advisory from 2 PM this afternoon to 8 PM PDT Tuesday for Lake Tahoe in NVZ002.

CA . Lake Wind Advisory from 2 PM this afternoon to 8 PM PDT Tuesday for Lake Tahoe in CAZ072.



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 mi51 minSSW 610.00 miOvercast34°F26°F75%1021.7 hPa
Reno, Reno Tahoe International Airport, NV24 mi51 minE 510.00 miMostly Cloudy37°F26°F65%1019.3 hPa

Link to 5 minute data for KTRK

Wind History from TRK (wind in knots)
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Last 24hrCalm------NW10W10W11W11
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SW3W5CalmCalmCalmW3S3CalmCalmCalmCalmS4SW10
1 day agoCalmCalmCalmCalm--CalmE4E4W5W7W4W4NW3W4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
2 days ago----CalmCalm--------W12W11
G16
W7SW8SW7W4CalmSE3CalmCalmE3CalmCalmCalmCalmCalm

Tide / Current Tables for Sacramento #4, Sacramento River, California
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Sacramento #4
Click for Map
Mon -- 12:32 AM PDT     2.00 feet High Tide
Mon -- 12:41 AM PDT     Moonset
Mon -- 06:32 AM PDT     0.77 feet Low Tide
Mon -- 06:52 AM PDT     Sunrise
Mon -- 10:35 AM PDT     Moonrise
Mon -- 10:49 AM PDT     2.94 feet High Tide
Mon -- 07:28 PM PDT     Sunset
Mon -- 08:07 PM PDT     0.20 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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221.91.61.310.80.81.222.72.92.82.52.11.61.10.70.40.30.20.30.61.1

Tide / Current Tables for Clarksburg #4, Sacramento River, California
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Clarksburg #4
Click for Map
Mon -- 12:41 AM PDT     Moonset
Mon -- 05:02 AM PDT     0.77 feet Low Tide
Mon -- 06:53 AM PDT     Sunrise
Mon -- 09:40 AM PDT     2.94 feet High Tide
Mon -- 10:36 AM PDT     Moonrise
Mon -- 06:37 PM PDT     0.20 feet Low Tide
Mon -- 07:28 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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21.81.51.10.90.80.91.52.22.82.92.72.41.91.510.60.30.20.20.40.81.31.7

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 (9,2,3,4)
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Ground Weather Radar Station Reno, NV
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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.