Friday, December13, 2019
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Marine Weather and Tides
Soda Springs, 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 7:10AMSunset 4:39PM Friday December 13, 2019 5:38 PM PST (01:38 UTC) Moonrise 6:16PMMoonset 8:37AM Illumination 95% Phase: Waning Gibbous; Moon at 17 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 Soda Springs, CA
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location: 39.31, -120.33     debug


Area Discussion for - Reno, NV
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FXUS65 KREV 132144 AFDREV

Area Forecast Discussion National Weather Service Reno NV 144 PM PST Fri Dec 13 2019

SYNOPSIS.

Rain and high elevation snow with gusty winds will continue through Saturday morning. Snow levels will gradually drop with significant travel impacts likely in the Sierra by sundown this evening. After a short break Saturday afternoon, more moisture moves in with a chance for light snow down to all valley floors Saturday evening into early Sunday morning. A break in the wet pattern is anticipated for early next week.

SHORT TERM.

Taking a look at current radar this afternoon, precipitation remains in northeast California and the Sierra with some light spillover making its way out near Gerlach, Lovelock, and Fallon. Snow levels this morning started out at around 6300 feet with light snowfall reported at South Lake Tahoe airport and now are hovering between 6800-7500 feet. Levels are expected to decrease gradually down to Lake Tahoe level (~6000 ft) from now through the evening hours as colder air ushers in from the northwest.

A Winter Weather Advisory is in effect for the Tahoe Basin for areas above 6500 feet until Saturday morning. Not many changes were made to the forecast this afternoon regarding snow totals around the Tahoe Basin and along the Sierra crest down into Mono County. Still anticipating 3 to 8 inches between 6500-7000 feet and 6 to 12 inches above 7000 feet. Higher amounts of up to 2 feet are likely along the Sierra crest with lighter amounts of 1 to 2 inches around lake level.

The main push of moisture is expected from now until Saturday morning along the storm's cold frontal boundary. Once the front makes its way through the region from the north, leftover snow showers are likely to linger during the day on Saturday with snow levels down to all valley floors at that time. Recent short range model guidance (NAM 3km & HRRR) has picked up on a secondary wave of moisture pushing through the region Saturday evening and lasting until early Sunday morning. Higher confidence exists in this wave providing sufficient forcing enough to form a narrow band of precipitation starting just north of the Tahoe Basin and stretching east towards the Lovelock/Fallon area by sundown Saturday. POPs and snow amounts have been increased in these areas to reflect the possible formation of this band. A light snowfall of up to an inch is forecast at this time enough to cause travel hazards for area roadways . this includes the Reno-Sparks metro area. Lower confidence in how long this band will last, as models currently have it moved out of the region just before sunrise Sunday morning.

As for winds . gusty conditions remain across the region with the strongest along Hwy 395 in Washoe Valley, the Sierra crest, and in Mono County along the eastern Sierra. Lake Wind Advisories remain in effect for both Tahoe and Pyramid through this evening. Winds are expected to begin decreasing in intensity later tonight for the western Nevada valleys as the main front pushes through from the north. Breezy conditions are likely to last for most of the weekend.

The low pressure trough exits the region by Sunday afternoon, being replaced with a short wave ridge from the west. Partly cloudy skies and cold temperatures will be the main story for the beginning of the work week with highs forecast to be 5 to 10 degrees below average for Monday and Tuesday. -LaGuardia

LONG TERM. next week .

A few changes were made to the long term, mainly to reduce the chances of precip for Wednesday and later in the week. The Wednesday storm is splitting and weakening rapidly as it moves in. It is also trending on a more southward track. We have kept low chance to slight chances of snow in the Sierra into Thursday morning, but have kept it dry for the rest of the area. Winds with this system will be negligible aside from some modest increases over the Sierra ridges.

The next storm for late in the week and into the weekend is not looking as impressive either. The main AR portion of the storm is now looking to remain north for Thursday and Friday. We will keep the threat for rain/snow north of I-80, although keep the chances somewhat subdued. After that, the storm splits with a closed low off the coast that may slowly move in next weekend. One thing to watch will be if the models trend south with the initial AR part of the storm Thursday and Thursday night. If this were to occur, it will be significantly wetter and windier for the Sierra and northwest Nevada. X

AVIATION.

MVFR to IFR CIGS/VIS will continue for the Tahoe area terminals especially thru 06Z. Most precip will fall as RA but some SN could mix in with heavier precip bands before 06Z, and after 06Z when colder air arrives but precip intensity decreases. Farther south at KMMH, winds will be stronger especially thru 00Z, followed by a shorter period of MVFR conditions late tonight into early Saturday AM. Snow accumulation on Sierra terminal runways is expected to be 1" or less.

MVFR CIGS are also possible for western NV terminals at times thru 06Z during periods of steady RA, with mountain obscurations into Saturday AM. A period of increased winds with areas of turbulence is likely to continue overnight thru midday Saturday.

We will have a short break in the weather on Saturday, with another round of lower CIGS/VIS, mountain obscurations and light snow possible for all elevations including western NV Saturday night into Sunday morning. Winds are expected to be lighter with this quick period of snow. MJD

REV Watches/Warnings/Advisories. NV . Lake Wind Advisory until 6 PM PST this evening for Pyramid Lake in NVZ004.

Lake Wind Advisory until 4 AM PST Saturday for Lake Tahoe in NVZ002.

Winter Weather Advisory until 10 AM PST Saturday above 6500 feet in NVZ002.

CA . Lake Wind Advisory until 4 AM PST Saturday for Lake Tahoe in CAZ072.

Winter Weather Advisory until 10 AM PST Saturday above 6500 feet 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, CA10 mi49 minN 010.00 miLight Rain34°F33°F100%1017.6 hPa
Emigrant Gap, Blue Canyon Nyack Airport, CA20 mi47 minS 10 G 150.25 miLight Rain Fog38°F37°F97%1016.6 hPa

Link to 5 minute data for KTRK

Wind History from TRK (wind in knots)
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Last 24hrNW4E3E3SE3CalmCalmCalmCalmCalmSE5CalmW4S5S4CalmCalm--CalmSW10S7CalmCalmCalmW3
1 day agoCalmS3SW6SW7CalmCalmS4S3CalmN3NW3NE4N3SW5
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2 days agoNE3E4CalmCalmN5SW4S11
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SW8N4N3CalmN3CalmCalmCalm--NE4--Calm----S6NW5N5

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
Fri -- 03:37 AM PST     -0.18 feet Low Tide
Fri -- 07:15 AM PST     Sunrise
Fri -- 08:39 AM PST     Moonset
Fri -- 08:41 AM PST     2.33 feet High Tide
Fri -- 02:46 PM PST     0.86 feet Low Tide
Fri -- 04:45 PM PST     Sunset
Fri -- 06:23 PM PST     Moonrise
Fri -- 06:51 PM PST     3.34 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.80.40-0.1-0.10.311.82.22.32.11.81.41.10.90.91.32.23.13.33.22.82.31.7

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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Reno, NV (20,4,5,8)
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Ground Weather Radar Station Reno, NV
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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.