Friday, March24, 2017 L-36.com


Marine Weather and Tides
Topaz, CA

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:53AMSunset 7:18PM Friday March 24, 2017 2:57 PM PDT (21:57 UTC) Moonrise 4:56AMMoonset 3:48PM Illumination 8% Phase: Waning Crescent; Moon at 27 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 242156
afdrev
area forecast discussion
national weather service reno nv
256 pm pdt Fri mar 24 2017

Synopsis
Active weather pattern will continue through early next week as a
couple of springtime storms bring mountain snow and valley rain.

Travel impacts are likely in the sierra tonight and again Sunday
night into Monday. Breezy winds may produce choppy lake conditions
at times through the weekend along with turbulent air travel.

Short term
Cold front associated with the current storm system was pushing
across the tahoe basin and reno-sparks vicinity early this
afternoon, producing a short period of enhanced snow around the
lake and steady rain in lower elevations. This front will
continue to move south through tonight and slowly weaken, shifting
the best snow chances southward to alpine and mono counties.

Additional snow amounts of 2-5 inches are likely in the advisory
area around tahoe, with slightly higher amounts south of us-50
along the sierra crest. Farther north, additional snowfall will be
less, with most of the snow behind the front more confined to
areas near the sierra crest and far western lassen county.

Therefore we will cancel the winter weather advisory for zone 71.

For western nv, the best chance for rain will shift east to areas
east of us-95 this evening where up to 0.25 inch is possible,
while elsewhere rainfall amounts will be lighter.

For Saturday, a weak trough passage will keep the possibility of
showers going mainly through the morning with snow levels
generally around 5000 feet, but little to no additional
accumulations are expected.

The next storm system for the late weekend into Monday looks to
be less organized, with only some light warm-advection type rain
and snow during the day with little to no accumulations. The best
chance for accumulating snow will be Sunday night--although
current QPF projections only support a few inches from northeast
ca into the tahoe basin and western mono county, and 4-8 inches
near the sierra crest. Even these lighter snow amounts could
produce some travel impacts for the Monday morning commute near
the sierra. For western nv, light rain and snow showers are
possible with the cold front passage early Monday morning but are
unlikely to produce significant travel impacts. Then during the
day Monday, cyclonic flow aloft behind the upper low will keep the
potential for snow or pellet showers going. Brisk northwest winds
will make for a chilly afternoon as highs only reach the lower
50s in western nv and lower 40s near the sierra. Mjd

Long term Tuesday through Friday...

a quieter pattern will unfold as ridging tries to establish itself
for a good part of the upcoming week. On Tuesday, a shortwave
ridge sets up across northern california and nevada yielding a
trend towards warmer conditions beginning mid-week. There is some
potential for a brush-by system Thursday but this has been
trending towards staying a little farther north with the best
potential for shower activity remaining north of i-80. Confidence
in the southern extent of the trough is relatively low, so will
leave slight chance of precipitation across southern areas at this
time.

Thereafter, model guidance shows good agreement even a week out of
establishing a broad upper level ridge across the eastern pacific
basin. This pattern would favor a more northerly storm track which
would diminish our precipitation potential heading into next
weekend. Did warm high temperatures as well with this solution in
mind. Could see temperatures warm above season averages with
highs in the mid to upper 60s across western nevada and lower 50s
for sierra valleys. Fuentes

Aviation
Main cold front has pushed through ktrk, ktvl, krno, and kcxp
with post-frontal showers expected to diminish through early
evening. Periods of MVFR cigs/vsbys are possible in the post-
frontal band of showers through about 03-04z for tahoe and western
nevada terminals (05-06z for kmmh).

Most showers should weaken considerably by 03-04z but a second wave
of weak upslope showers may be possible for ktrk/ktvl/kmmh after 12z
Saturday morning but at most brief MVFR conditions and mountain
obscuration is expected.

Turbulence across the ridgetops should weaken after 06z tonight as
stronger winds aloft near ridge level weaken with trough pushing
eastward.

After a brief break early Sunday... Another storm system will move
through the region late Sunday into Monday. This one looks similar
to today's system, except most of the precip is likely to occur
during the nighttime hours. Fuentes

Rev watches/warnings/advisories
Nv... Winter weather advisory until 4 am pdt Saturday nvz002.

Ca... Winter weather advisory until 4 am pdt Saturday 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 mi65 minSSW 11 G 211.25 miLight Snow Fog/Mist35°F32°F89%1019.1 hPa

Wind History from TVL (wind in knots)
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Last 24hrS11S9
G17
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S8S7S9CalmS8S94SW8SW8S14S12
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G19
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1 day agoS5S83S11S5S4CalmCalmCalmS4CalmS3CalmS6S5CalmS5S4CalmCalmCalmCalmS7SW9
2 days agoS12
G20
CalmCalmS4S6S5Calm35S10S10S10S8SW7S15
G19
S20
G25
S14CalmS8S9
G15
S8SE4Calm5

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
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IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralWestCoast    EDIT
Geos

Wind Forecast for Reno, NV (17,4,5,8)
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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.