Thursday, January17, 2019 L-36.com


Marine Weather and Tides
Spanish Springs, NV

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:15AMSunset 5:02PM Thursday January 17, 2019 8:44 AM PST (16:44 UTC) Moonrise 2:50PMMoonset 4:30AM Illumination 88% Phase: Waxing Gibbous; Moon at 11 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 171121
afdrev
area forecast discussion
national weather service reno nv
321 am pst Thu jan 17 2019

Synopsis
A major winter storm will continue to bring heavy snow in the
mountains with periods of rain, snow and gusty winds for lower
elevations through this evening. A messy evening commute is
possible along the 395 corridor while roads in the sierra will be
impassible at times. Drier Friday, but some snow is possible near
the oregon border with a warm front. Dry and mild Saturday before
another system moves through Sunday with valley rain, mountain
snow and gusty winds. Dry and cool weather is expected next week.

Short term
Main forecast changes:
* lowered snow levels from this morning through this evening.

* increased snow amounts between 5000 and 6500 feet all areas.

* moderate to high threat of a messy evening commute for the
sierra front.

* increased precipitation and snowfall threat near the oregon
border Friday afternoon and evening.

Overview: the first wave of the storm is moving through mono and
mineral counties this morning with heavy mountain snow and valley
rain. An impressive narrow cold frontal rainband (nfcr) moved
through reno-tahoe-lassen earlier with rainfall rates to 1 2" per
hour and snowfall rates of 3-4" hr. This has also brought snow
levels to the 5000-5500 foot level while they are still near 6500
ahead of the front that is still moving through mono-mineral
counties. Snow levels will drop again as another potent wave moves
a secondary cold front through late this morning through this
evening with periods of moderate to heavy precipitation.

The storm wanes overnight tonight, but a warm front is on its
heels. Models have trended significantly wetter and further south
the past 24 hours. It will not be a significant precipitation
producer, but up to 2 inches of snow is possible as the warm front
moves through. Snow levels will rapidly rise from near the valley
floors to 7000 feet Friday evening as the warm front passes.

Details by local area:
sierra: heavy snow to continue except in the lowest elevations
below 5500 feet. Blizzard conditions are likely the next few hours
with the strongest winds and light-moderate snowfall. Snowfall
increases this afternoon with 2-3" per hour rates possible as it
is unstable with the second wave. Winds will diminish some with
more localized blizzard conditions, but travel will remain
hazardous and discouraged in the sierra through this evening. An
additional 2-3 feet above 7000 feet is expected with 1-2 feet down
to 6000 feet.

Northeast california: periods of heavy snow above 5000 feet
through this afternoon. Lower valleys, including susanville will
see precipitation change to all snow by noon today as the second
front moves through. Additional accumulations of a foot or more
west of highway 395 with a couple inches on the valley floors
remain possible.

Western nevada sierra front: the heavy rain has ended with lighter
showers. Snow levels are about 5500 feet, but will fall to around
5000 by 10 am, and the valley floors by sunset. As the second
wave moves through from late morning into the early evening, it
will create some travel headaches, especially above 5000 feet.

Issued a winter weather advisory from 10 am through 7 pm. Snow
amounts of 2-5 inches above 5000 feet with 6-8 inches possible for
virginia city and the highlands. Up to 1 inch of slushy snow is
possible on valley floors for the evening commute. However, roads
are likely to remain wet below about 4700-4800 feet in elevation.

West central nevada: winds the main concern this morning for
mineral county with gusts to 65 mph possible near walker lake and
45-50 mph elsewhere as the front move through. Winds slowly
diminish during the aftenroon. As for precip, after sunrise,
occasional rain and snow showers with snow levels gradually
falling to the valley floors by 6 pm. Little if any valley
accumulation expected with couple inches possible above 5000 feet.

Once exception will be in western mineral county this morning
where up to 6 inches could fall on the roads south of yerington
and SW of hawthorne. X

Long term Saturday through next week...

changes: bumped up pops, wind and QPF for Sunday and warmed
temperatures over the weekend.

Models have trended flatter with shortwave ridge and keep more flow
aloft across northern ca and northern nv this weekend. The next
system moving into the region Sunday is also coming in farther to
the south and will likely have more of an impact.

For Saturday, expect mild and mostly dry conditions as warm
advection light precipitation across northeast ca and northwest nv
wanes and clouds break by afternoon. The big boom or bust for
Saturday will be mixing and expected temperatures as winds at ridge
level will be right at the cusp. If we mix, then temperatures could
push 55-60 degrees in some lower valleys with near 50 in the sierra
valleys. If we don't quite mix completely then readings will stay in
the mid 40s to lower 50s.

For Sunday, a fast moving shortwave and associated cold front will
bring our next good chance of wind and precipitation. Breezy and
mild conditions will likely precede this front with a well mixed
lower atmosphere. Again, temperatures will be tricky as some
scenarios push the front into the region by midday Sunday. We have
significantly pushed up pops for the northern sierra and northeast
ca Sunday morning and then spread rain snow south across much of the
area during the afternoon evening with snow levels crashing down to
most valley floors by Sunday evening. With this storm, snow levels
will be fairly high during the brunt of the precipitation ahead of
the front. So accumulations for lower elevations are expected to be
limited. Preliminary snowfall projections indicate a solid 8-14
inches along the crest in the tahoe basin with lesser amounts
farther south toward mammoth. For lake level, a few inches of wet
snow could fall on the back end of the precipitation. Travel will
likely be impacted across the sierra Sunday and Sunday night.

Temperatures will be much cooler mon-tue with cold northerly flow
Monday followed by inversions Tuesday. The weather pattern mid-late
week is trending colder too as a ridge amplifies off the west coast
and allows cold and drier systems to drop in from the north. So
after a brief warmup Wednesday, a cold front will slide in from the
north and bring another cool down Thursday. It is a bit too far out
to determine moisture potential with any inside sliders. But there
is at least a low confidence risk of snow showers Wednesday night-
Thursday. Hohmann

Aviation
Snow will continue for sierra terminals through this evening with
periods of heavy snow expected to bring significant accumulating
snow to ktrk ktvl kmmh. Sierra sites will likely remain below
minimums through this evening before snow begins to taper to showers
overnight and conditions improve late tonight and early Friday.

Latest model simulations indicate some light snow possible Friday
afternoon and evening for the tahoe basin northward with lowering
cigs vsbys and light accumulating snow.

For lower elevations, gusty winds will bring periods of moderate
turbulence and llws today as ridge level winds continue to gust over
100 kts and south-southwest surface winds increase to 20-25 kts with
gusts 30-40 kts. Periods of light rain are possible this morning
before the next wave approaches and brings a more steady moderate
rain (snow mainly above 5000 feet) this afternoon especially for
krno and kcxp. CIGS could lower enough to obscure higher terrain and
rain could briefly change over to snow before tapering late this
afternoon. Accumulation would generally be 1 2 inch or less and
mainly on exposed surfaces if snow levels fall in time before
precipitation tapers.

Another storm will roll in on Sunday, not as potent as this one, but
still capable of producing some light snow accumulations at sierra
terminals and turbulence for all areas. Hohmann

Rev watches warnings advisories
Nv... Winter storm warning until 4 am pst Friday nvz002.

Blizzard warning until 7 am pst this morning above 7000 feet in
nvz002.

Wind advisory until 7 pm pst this evening nvz001.

Winter weather advisory from 1 pm this afternoon to 7 pm pst
this evening nvz003.

Ca... Winter storm warning until 4 am pst Friday caz071.

Winter storm warning until 4 am pst Friday caz072-073.

Blizzard warning until 7 am pst this morning above 7000 feet in
caz072-073.

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
Reno, Reno Tahoe International Airport, NV17 mi50 minN 610.00 miMostly Cloudy41°F30°F67%1008.8 hPa
Reno/Stead, NV18 mi50 minSW 21 G 2910.00 miFair and Breezy39°F26°F61%1009.1 hPa

Wind History from TVL (wind in knots)
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Last 24hr--S10
G15
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SW86CalmS11
G31
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G32
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S7S16
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1 day agoCalmCalmCalmNE3CalmCalmNE3CalmCalmCalmCalmCalmS9
G15
S17
G26
S13
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S11
G24
S18
G24
S15
G19
S15
G23
S11
G21
S10S9
G17
S9
G24
S8
G21
2 days agoNE4Calm3NE5CalmCalmCalmCalmE3CalmCalmCalmS3CalmCalmCalmCalmCalmCalmCalmCalm3CalmCalm

Tide / Current Tables for
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Weather Map and Satellite Images
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GOES 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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Wind Forecast for Reno, NV (11,2,3,4)
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Ground Weather Radar Station Reno, NV
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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.