Tuesday, September26, 2017 L-36.com


Marine Weather and Tides
South Lake Tahoe, CA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:51AMSunset 6:50PM Tuesday September 26, 2017 11:01 AM PDT (18:01 UTC) Moonrise 11:58AMMoonset 10:09PM Illumination 35% 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
    EDIT      (on/off)   Help
7 Day Forecast for Marine Location Near South Lake Tahoe, CA
   Hourly   EDIT   Help
location: 38.91, -120.01     debug


Area Discussion for - Reno, NV
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus65 krev 260934
afdrev
area forecast discussion
national weather service reno nv
234 am pdt Tue sep 26 2017

Synopsis
Periods of high clouds and light valley winds are expected through
the week. Gusty east winds are possible near the ridge lines
again tonight. A ridge of high pressure along the west coast is
gradually getting stronger leading to a slow warming trend. A weak
upper level wave will brush by the region by late in the weekend
and could bring a few showers to the oregon border.

Short term
No appreciable changes were made to the existing forecast through
Thursday. Temperatures warm a couple to three degrees each day
with highs increasing from the low 70s for western nevada and
mid upper 60s for sierra valleys to and upper 70s and low 70s
respectively by Thursday.

Otherwise, winds remain light and easterly with the exception of
sierra ridges which will stay breezy with gusts around 35 mph
tonight. Winds do begin to shift more southwesterly by Thursday
afternoon as upper flow deforms due to an area of low pressure
approaching the pacific northwest. Some high level cirrus clouds
will move into northern nevada today mainly north of interstate 80
with the rest of california and western nevada remaining mostly
cloud-free. Boyd

Long term Friday onward...

rather significant differences are starting to show up in the
forecast for the weekend and into next week, with increasing
ensemble spread as well. Being that fall is a transition season, in
addition to ongoing atlantic hurricanes changing downstream
conditions, would tend to lead to more chaotic long range
forecast scenarios.

The upper ridge begins to flatten Friday in response to an incoming
trough, which may bring an increase in winds Friday into Saturday.

The latest operational GFS and ECMWF currently agree on this
trough pushing a cold front across northern nevada over the
weekend. However, this is also a new development over the past
couple of model runs and the GFS is deeper with the trough than
the ec. This would lead to a cool down this weekend along with a
few light showers possible near the oregon border.

Where it get much more complicated is the early part of next week.

Operational and ensemble runs have anything from a rebuilding ridge
to a deep trough over the west coast. At this point will just trend
temperatures near normal and maintain the dry forecast outside of
slight chances near the oregon border to account for the
uncertainty. -dawn

Aviation
WidespreadVFR conditions outside of patchy morning freezing fog in
the martis and sierra valleys, which includes ktrk. While surface
winds will be generally light and northeasterly, ridges along the
sierra crest continue to gust to around 30-40 kts from the east.

This may create pockets of turbulence from the crest westward.

Winds are expected to subside across ridgelines by Wednesday.

-dawn

Rev watches warnings advisories
Nv... None.

Ca... None.

For more information from the national weather service visit...

http: weather.Gov reno


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
South Lake Tahoe, Lake Tahoe Airport, CA1 mi68 minNNE 710.00 miFair54°F28°F38%1018 hPa
Carson City Airport, NV24 mi66 minN 010.00 miFair54°F26°F35%1021.7 hPa

Wind History from TVL (wind in knots)
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
Last 24hr6--Calm6Calm--34CalmCalmCalmCalmS43CalmS44CalmCalmS5Calm3NE74
1 day ago--34Calm6NE4CalmCalmCalmS3S5S33Calm3S4S3Calm4S4S4CalmCalmN6
2 days agoNE10
G16
E7
G18
E6--56CalmCalmCalmNE7SW3S4Calm5S4S3SW3S43CalmS633NE8
G14

Tide / Current Tables for Sacramento, Sacramento River, California
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Sacramento
Click for MapNote: These data apply only during low river stages.

Tue -- 06:57 AM PDT     Sunrise
Tue -- 08:03 AM PDT     0.25 feet Low Tide
Tue -- 01:02 PM PDT     Moonrise
Tue -- 01:04 PM PDT     2.15 feet High Tide
Tue -- 06:56 PM PDT     Sunset
Tue -- 07:20 PM PDT     0.74 feet Low Tide
Tue -- 11:15 PM PDT     Moonset
Tue -- 11:29 PM PDT     2.65 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.62.421.61.20.80.50.30.20.40.91.51.92.12.11.81.51.10.90.70.81.32.12.6

Tide / Current Tables for Sacramento #4, Sacramento River, California
   EDIT      (on/off)   Help   One Week of Data
Sacramento #4
Click for Map
Tue -- 06:57 AM PDT     Sunrise
Tue -- 08:03 AM PDT     0.24 feet Low Tide
Tue -- 01:02 PM PDT     Moonrise
Tue -- 01:04 PM PDT     2.14 feet High Tide
Tue -- 06:56 PM PDT     Sunset
Tue -- 07:20 PM PDT     0.73 feet Low Tide
Tue -- 11:16 PM PDT     Moonset
Tue -- 11:29 PM PDT     2.64 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.62.421.61.10.80.50.30.20.40.91.51.92.12.11.81.51.10.90.70.81.32.12.6

Weather Map and Satellite Images
       (on/off)   Help
Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralWestCoast    EDIT
Geos

Wind Forecast for Reno, NV (14,3,4,5)
      (on/off)   Help

Ground Weather Radar Station Reno, NV
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.