Thursday, April2, 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 6:42AMSunset 7:26PM Wednesday April 1, 2020 11:32 PM PDT (06:32 UTC) Moonrise 11:09AMMoonset 1:35AM Illumination 68% 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 Truckee, CA
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location: 39.35, -120.19     debug


Area Discussion for - Reno, NV
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FXUS65 KREV 020316 AFDREV

Area Forecast Discussion National Weather Service Reno NV 816 PM PDT Wed Apr 1 2020

UPDATE.

Winds are decreasing slowly across the region. This slow decrease in wind speeds should continue through the evening. We have allowed the Lake Wind Advisories to expire as a result. Some model data still want to indicate very light precipitation near the Oregon border this evening . so we will leave that in for now. Otherwise . the forecast seems on track in the short term.

PREVIOUS DISCUSSION. /Issued 153 PM PDT Wed Apr 1 2020/

SYNOPSIS .

Persistent trough across the northwest US will maintain cooler conditions through Thursday. Brisk gusty winds will keep it feeling chilly for much of the area. A brief warmup on Friday will be followed by another round of cooler temperatures, gusty winds, mountain snow and chances for valley rain and snow over the weekend into early next week.

SHORT TERM . Gusty brisk, north-northwest winds continue across the Sierra and western Nevada today. Peak gusts will be around 30 to 35 mph for most areas today, except for south of Highway 50 where it will be notably more breezy. For those locations in Mono and Mineral counties the peak wind gusts will be around 35 to 45 mph, with some wind prone areas up to 50 mph. Sierra ridge winds will continue to be in the 60 to 80 mph range through the rest of the day, with impacts to aviation possible.

Rain/snow showers will be very sparse, with some light snow showers primarily north of I80 and east of Highway 95. Showers currently are impacting areas from Winnemucca eastward. Any additional showers that occur through this evening may form north of a Lovelock to Gerlach line.

Temperatures will drop tonight as cloud cover and winds dissipate. Plan for chilly lows in the teens for Sierra valleys and 20s for western Nevada valleys. Light northerly flow will keep temperatures on the cool side for Thursday as well.

Warmer temperatures and generally lighter winds on Friday will make for a small break in active weather. Then the weekend arrives, and yes we have another round of storms on tap. Plan for gusty winds, chances for rain and snow, and a drop in temperatures . again. -Edan

LONG TERM . Saturday through Wednesday .

The return of winter-like weather is still on track for this weekend. Gusty winds, mountain snow, valley rain and snow, along with cooler weather will move into the region Saturday and last into early next week. No significant changes were made to the forecast thinking this afternoon.

The storm is still expected to come in two waves, one on Saturday and another, likely stronger wave, on Sunday. Although areas along the Sierra crest may not see much, if any, break in the precipitation. The main discrepancy in the models is how far south will the system drop and how long will it stay over the region. Some simulations show the low pressure system lingering over the region through midweek which could keep cooler, showery weather, over the region through much of next week.

Precipitation is expected to move into NE California and the Sierra on Saturday and last into Monday morning. The system is relatively cold so the upper elevations will see mostly all snow. However with the current sun angle and warm ground temperatures, snow will have a harder time accumulating in the lower mountain elevations. Snow amounts along the Sierra crest over the weekend are expected to be in the one to two foot range with 4 to 8 inches possible in the Truckee/Tahoe area. Simulations are still showing a little less accumulations for the eastern Sierra, but if the system drops a farther south, accumulations would be similar to the central Sierra.

Gusty winds can be expected over the weekend, but there is still a question of which day will be the strongest and models have gone back and forth a little on this. Either way, expect widespread gusts of 30-40 mph over the weekend. -Zach

AVIATION . Brisk west to northwest winds continue today at the main terminals, with peak gusts mainly around 25-30 kt, except possibly a bit stronger at KMMH and areas south of US-50. Sierra ridge gusts to around 60-70 kt have resulted in mountain wave turbulence today, with several pilot reports of moderate to severe turbulence.

Otherwise, VFR conditions will prevail for the next few days with lighter NE-E winds as surface high pressure builds into the region.

Winds may begin to pick up on Friday afternoon, ahead of the incoming stormy weekend. Plan for periods of gusty winds and increased chances for rain and snow producing a variety of aviation- related travel impacts this weekend. MJD/Edan

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 mi37 minN 010.00 miFair25°F19°F80%1014.2 hPa
Reno, Reno Tahoe International Airport, NV24 mi37 minN 710.00 miA Few Clouds37°F8°F30%1013.3 hPa

Link to 5 minute data for KTRK

Wind History from TRK (wind in knots)
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Last 24hrSW9SW11S10SW7SW10S8S9----------------SW16
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Tide / Current Tables for Sacramento, Sacramento River, California
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Sacramento #4, Sacramento River, California
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Sacramento #4
Click for Map
Thu -- 03:30 AM PDT     Moonset
Thu -- 04:07 AM PDT     2.16 feet High Tide
Thu -- 06:48 AM PDT     Sunrise
Thu -- 10:03 AM PDT     0.93 feet Low Tide
Thu -- 01:19 PM PDT     Moonrise
Thu -- 02:00 PM PDT     2.68 feet High Tide
Thu -- 07:31 PM PDT     Sunset
Thu -- 11:45 PM PDT     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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0.40.91.51.92.22.11.81.51.210.91.11.72.42.72.62.42.11.71.20.80.50.20.1

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 (2,6,7,8)
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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.