Thursday, May25, 2017 L-36.com


Marine Weather and Tides
South Lake Tahoe, CA

Version 3.4
What's New / NOTES
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 5:37AMSunset 8:16PM Thursday May 25, 2017 1:09 PM PDT (20:09 UTC) Moonrise 4:54AMMoonset 7:16PM Illumination 0% Phase: New Moon; Moon at 0 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 South Lake Tahoe, CA
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location: 38.91, -120.01     debug


Area Discussion for - Reno, NV
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Fxus65 krev 250947
afdrev
area forecast discussion
national weather service reno nv
247 am pdt Thu may 25 2017

Synopsis
Melting high elevation sierra snowpack will continue to lead to
minor flooding near creeks, streams and rivers through the
memorial day weekend and into most of next week. Temperatures will
cool a few degrees today and Friday before warming up again into
early next week. Breezy winds will prevail this afternoon.

Short term
A weak surface frontal boundary is providing areas of low clouds
and a band of showers across pershing county this morning. This
band will press eastward and diminish through the morning as the
upper trough progresses eastward. Breezy west to northwest winds
will remain in the wake of the front this morning and afternoon.

Wind gusts in the 25-30 mph range will make for choppy conditions
across areas lakes and anyone out on lake waters should exercise
caution today.

Temperatures will cool a few degrees today and Friday but will
still remain a few degrees above seasonal averages. Expect highs
mainly around upper 70s through Friday with lower 80s by Saturday
across western nevada. Mid to upper 60s will prevail for sierra
valleys through Friday with low 70s possible by Saturday.

Overall, the pattern looks relatively dry. The GFS does try to
spark some convection across the sierra south of the tahoe basin
on Friday afternoon, but it is in the minority compared with other
model output. Feel this is being overdone in the GFS considering
it tries to develop convection in a pattern of an elevated heat
source across the sierra in mono county. The considerable snowpack
should put a damper on near terrain instability and will likely
see just some cumulus build ups across higher terrain free of snow
cover. Fuentes

Long term Sunday through Wednesday...

the end of the memorial day weekend and most of next week will
feature a period of late spring heat with potential for enhanced
melting of the high elevation (8000 feet+) sierra snowpack. This
would lead to increased flows on small creeks and streams in mono
county and into the walker river system.

The heat along with light winds aloft will allow for several days of
convective activity and increasing chances for afternoon and evening
thunderstorms. First day of activity could be memorial day and
mainly along the sierra crest from donner pass southward. Shower and
thunderstorm potential should continue into Tuesday Wednesday with a
few storms possible for western nevada.

By late in the week, models are showing a trough approaching the
west coast. This would likely increase the afternoon and evening
winds off the sierra and decrease the potential for showers and
thunderstorms. Brong

Aviation
Winds will be gusty again today down at valley floors as the
pressure gradient tightens. Peak gusts at area terminals will
generally be 25-30 kts. Winds at ridge level are expected to drop
off however, so any lee turbulence would be limited to this morning.

Otherwise, more stable conditions are projected through most of the
memorial day weekend. Hohmann

Hydrology
The sierra snowpack will continue to melt over the next several
weeks. As we move into the peak of the melt season, impacts are
likely to become more prevalent for the eastern sierra, the
walker river system and upper portion of the carson river system.

Creeks and streams are running fast and very cold, bringing the
risk of hypothermia for those without protective gear. Those with
plans to camp in the sierra over the memorial day weekend should
be prepared to quickly leave creek side campsites. Hikers will
want to be cautious while trying to cross creeks and streams.

Also, be cautious if recreating near a river; some banks may have
become unstable from prolonged inundation and could suddenly
collapse. Brong boyd

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
South Lake Tahoe, Lake Tahoe Airport, CA1 mi76 minno data10.00 miFair63°F26°F25%1005.3 hPa
Carson City Airport, NV24 mi74 minS 310.00 miFair70°F24°F18%1008.1 hPa

Wind History from TVL (wind in knots)
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Last 24hrS16
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4S5SW3CalmCalmCalmCalmCalmCalmCalmCalmCalmS7
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S11S7--S13
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1 day ago--NE104S6S5S6CalmSW3S4SW4S6S5CalmS3S4SW3CalmS3NE8S13
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2 days agoN8NE10NE7N5NE5CalmCalmCalmS3S4S53CalmS33CalmCalmS3CalmNE5NE7NE7NE8--

Tide / Current Tables for Sacramento, Sacramento River, California
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Sacramento
Click for MapNote: These data apply only during low river stages.

Thu -- 02:09 AM PDT     0.46 feet Low Tide
Thu -- 05:46 AM PDT     Sunrise
Thu -- 06:00 AM PDT     Moonrise
Thu -- 06:38 AM PDT     3.35 feet High Tide
Thu -- 12:46 PM PDT     New Moon
Thu -- 03:37 PM PDT     -0.29 feet Low Tide
Thu -- 08:19 PM PDT     Sunset
Thu -- 08:20 PM PDT     Moonset
Thu -- 08:22 PM PDT     2.44 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.80.60.50.71.42.53.23.33.12.72.11.50.90.4-0-0.2-0.30.31.222.42.42.11.7

Tide / Current Tables for Sacramento #4, Sacramento River, California
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Sacramento #4
Click for Map
Thu -- 02:09 AM PDT     0.46 feet Low Tide
Thu -- 05:46 AM PDT     Sunrise
Thu -- 06:00 AM PDT     Moonrise
Thu -- 06:38 AM PDT     3.34 feet High Tide
Thu -- 12:46 PM PDT     New Moon
Thu -- 03:37 PM PDT     -0.30 feet Low Tide
Thu -- 08:19 PM PDT     Sunset
Thu -- 08:21 PM PDT     Moonset
Thu -- 08:22 PM PDT     2.44 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.80.60.50.61.42.53.23.33.12.72.11.50.90.4-0-0.3-0.30.31.222.42.42.11.7

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralWestCoast    EDIT
Geos

Wind Forecast for Reno, NV (16,3,4,5)
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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.