Monday, December16, 2019
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Marine Weather and Tides
Floriston, 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 7:11AMSunset 4:39PM Sunday December 15, 2019 11:29 PM PST (07:29 UTC) Moonrise 8:26PMMoonset 10:21AM Illumination 79% Phase: Waning Gibbous; Moon at 19 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 Floriston, CA
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location: 39.39, -120.08     debug


Area Discussion for - Reno, NV
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FXUS65 KREV 152134 AFDREV

Area Forecast Discussion National Weather Service Reno NV 134 PM PST Sun Dec 15 2019

SYNOPSIS.

High pressure builds overhead early this week for quieter weather. Developing inversions will bring limited ventilation for valleys Monday and Tuesday. A weak storm is expected Wednesday for a chance of light snow, mainly in eastern California. Below average temperatures will rebound to around average mid to late week. A stronger storm could impact holiday travel next weekend.

SHORT TERM.

Brisk northerly winds will slow this evening into the overnight hours while synoptic cloud cover thins as high pressure builds over the region. These conditions will promote strong radiational cooling during the overnight hours resulting in strong valley inversions, and weak ventilation, through at least Tuesday morning. Some freezing fog and stratus will be possible mainly for Sierra valleys. Best chances of seeing freezing fog and fog-to- stratus development will be in and adjacent to the Martis Valley near Truckee, in the Sierra Valley, in the Portola area, and in the vicinity of Susanville.

Higher cloud cover rapidly increases Tuesday which would help to weaken surface inversions for Wednesday morning with winds increasing aloft, which would break any remaining inversions. Some light snow and snow showers will be possible Wednesday and Wednesday night as a weak wave moves through northern California. Model trends for this wave continue to weaken as jet support out- paces the upper level circulation which will likely open into an unconsolidated, lifting wave Wednesday evening. Best chance of showers remain in eastern California with only a dusting to 0.5" of accumulation possible at this time. Some flurries could make its way into western Nevada, but impacts will be non-existent. Flow aloft turns westerly late Wednesday night into early Thursday morning.

LONG TERM. Thursday to Christmas Day

Thursday and Friday a moist onshore flow may lead to a few light showers in the northern Sierra, the Surprise Valley and far northwest Nevada, but trend is toward drier conditions with ridge building over the Great Basin. Valley inversions could persist through the end of the week with some warming pushing high temperatures into the low 50s.

Ensembles continue to show a slower and drier trend in the storm for next weekend. This is due to a more elongated trough along the west coast with the upper jet ahead of the trough in a more north-south orientation. The threat for a big precipitation event looks diminished, but still have some confidence in some rain and snow in the Sierra which usually leads to weekend travel difficulties over the passes. This could be amplified by pre- holiday weekend traffic. Winds could be the main impact for travel across western NV and the eastern Sierra.

Looking ahead toward Christmas week, ensembles maintain a trough along the west coast with potential for rain and snow. No strong signals for a big snow event but some snow about the region is not out of the question. Brong

AVIATION.

Low cloud deck and obscured mountain tops will hang around western NV and northeast CA into this evening with some cleaning tonight. This could lead to valley fog, especially around KTRK, late tonight and Monday morning. The region will remain dry into Tuesday with some light showers possible on Wednesday.

Winds along the Tahoe ridge lines will shift to the east by Monday morning, certainly enough for some bumps in and out of the Tahoe terminals. Brong

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, CA6 mi54 minN 010.00 miFair12°F10°F92%1023.7 hPa
Reno, Reno Tahoe International Airport, NV18 mi34 minW 310.00 miPartly Cloudy27°F18°F69%1026.2 hPa
Reno/Stead, NV22 mi54 minN 510.00 miFair18°F14°F86%1024.7 hPa
Carson City Airport, NV23 mi54 minN 010.00 miOvercast27°F19°F74%1024.4 hPa

Link to 5 minute data for KTRK

Wind History from TRK (wind in knots)
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Last 24hrS3CalmCalmCalmCalmCalmCalm------CalmCalmCalmN3N4N3N4CalmCalmS3SE3CalmCalmCalm
1 day agoW11
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CalmNE5N5CalmCalmCalmCalm--S4S6S7S6W4SW8S8S9SW4SE4S3CalmCalmNW7
2 days agoCalmCalmCalmSE5CalmW4S5S4CalmCalm--CalmSW10S7CalmCalmCalmW3CalmSW10
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G29

Tide / Current Tables for Sacramento #4, Sacramento River, California
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Sacramento #4
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Mon -- 05:42 AM PST     -0.23 feet Low Tide
Mon -- 07:17 AM PST     Sunrise
Mon -- 11:04 AM PST     2.38 feet High Tide
Mon -- 11:08 AM PST     Moonset
Mon -- 04:46 PM PST     Sunset
Mon -- 05:31 PM PST     0.76 feet Low Tide
Mon -- 09:23 PM PST     2.93 feet High Tide
Mon -- 09:43 PM PST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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21.40.80.30-0.2-0.20.10.91.62.22.42.321.61.310.80.81.42.32.92.92.7

Tide / Current Tables for
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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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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.