Sunday, December17, 2017 L-36.com


Marine Weather and Tides
Topaz, 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 7:11AMSunset 4:41PM Sunday December 17, 2017 5:40 AM PST (13:40 UTC) Moonrise 7:28AMMoonset 5:38PM Illumination 1% Phase: Waning Crescent; Moon at 29 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 Topaz, CA
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location: 38.67, -119.53     debug


Area Discussion for - Reno, NV
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Fxus65 krev 171109
afdrev
area forecast discussion
national weather service reno nv
309 am pst Sun dec 17 2017

Synopsis
Average temperatures today with warming and moderate overnight
temperature inversions through Tuesday. Another storm will likely
produce strong winds Wednesday, very cold temperatures for late
week, and has the potential to bring a couple inches of
accumulating snow to all elevations.

Short term
Northeast winds along the sierra crest gusted to over 100 mph
overnight as cold air settled into the great basin creating a very
strong temperature gradient along the sierra. Winds on lake tahoe
continue to gust around 30 mph this morning with a lake wind
advisory in effect until 10 am. The strong gradient will dissipate
with winds slowly backing off along the ridges through the day
today with generally light winds elsewhere.

Temperatures today will be right around average for this time of
year with mostly clear skies. Daytime high temperatures will
increase to around 10 degrees above average by Tuesday as ridging
builds back over the region. Moderate low level temperature
inversions are expected for the beginning of the week before the
next system moves in Wednesday. -zach

Long term Tuesday night and beyond...

models remain persistent with dropping upper low into the great
basin for Wednesday with both the gfs ECMWF showing similar
timing differences to their previous runs. The ECMWF is about 6
hours faster. The overall character of the storm has not changed
with winds increasing Tuesday night ahead of a strong cold front
that will drop into northeast ca northwest nv late Tuesday night,
and then progress fairly quickly southeast during the day
Wednesday. Frontogenetical forcing instability remain impressive
along the front with model QPF showing anywhere from 0.20-0.40".

This is a colder storm and snow levels are expected to be at
valley floors. So accumulating snow is possible at all elevations
with current projections of 1-4" which will mostly fall during a
short 1-2 hour window along the front. Impacts will be greater if
the faster ECMWF verifies in bringing this band of snow through
the area earlier in the day Wednesday. However, the intensity of
the snow band may still be sufficient to accumulate snow for area
roadways airports even during the day. Anyone with travel or
outdoor interest late Tuesday night into Wednesday should check
weather forecast updates and be prepared for adverse travel
conditions.

As this system departs, we will develop another period of gusty
northeast winds across the ridges Wednesday night and Thursday.

These winds may persist into next weekend as upper level ridge
builds across the west coast. The large scale pattern favors a
blocking pattern that will keep big pacific storms away from our
area with perhaps a chance for another cold slider-like system for
the end of the month. Hohmann

Aviation
Gusty northeast ridge winds to continue this morning with gusts
to 70-75 kts and mtn wave turbulence likely near the sierra
crest. Winds then begin to diminish with peak gusts around 50 kts
after 18z today. Light winds will then prevail through Tuesday
before the next system arrives Wednesday. This one looks stronger
than the last front with strong gusty winds, mtn wave turbulence,
llws and a period of MVFR ifr conditions in shsn for all
elevations. Hohmann

Rev watches warnings advisories
Nv... Lake wind advisory until 10 am pst this morning for lake tahoe
in nvz002.

Ca... Lake wind advisory until 10 am pst this morning for lake tahoe
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
South Lake Tahoe, Lake Tahoe Airport, CA30 mi47 minN 010.00 miFair22°F12°F66%1022 hPa

Wind History from TVL (wind in knots)
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Last 24hrN7S3E8
G14
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5NE4CalmCalm5--N7
G18
--553CalmCalmCalm
1 day agoCalmS5CalmCalmCalmNE3NE4NE6S8S105S6SW5CalmS11CalmCalmS9CalmCalm3Calm4Calm
2 days ago3S3S4CalmS4CalmE3CalmNE4N3CalmCalmCalmCalmS3S3S4S3S3S3S3CalmCalmS4

Tide / Current Tables for
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Tide / Current Tables for
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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 (8,2,3,4)
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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.