Thursday, March30, 2017

Marine Weather and Tides
Fallon, NV

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 6:42AMSunset 7:20PM Wednesday March 29, 2017 11:43 PM PDT (06:43 UTC) Moonrise 8:00AMMoonset 9:24PM Illumination 8% Phase: Waxing Crescent; Moon at 3 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 Fallon, NV
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location: 39.47, -119     debug

Area Discussion for - Reno, NV
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Fxus65 krev 300504 aaa
area forecast discussion... Updated
national weather service reno nv
1004 pm pdt Wed mar 29 2017

No changes this evening as cold front and upper trough are still
forecast to swing quickly through the region overnight into
Thursday morning. Model simulations indicate the deepest
instability for convection along front will be from the basin and
range eastward across northeast and east central nv. However, we
will maintain the slight chance of thunder farther west due to
the forcing along cold front. Hrrr simulations also show narrow
band of convection accompanying front although it is shortlived
for much of western nv west of hwy 95 and south into mono-mineral
counties. While precipitation amounts will be mostly unimpressive,
the wind will not disappoint. Strong gradients will result in
windy conditions especially south of hwy 50 where the gradient
will maximize during the day Thursday. Continue all wind
advisories and warnings. Hohmann

Previous discussion /issued 323 pm pdt Wed mar 29 2017/

dry conditions, light winds and warm temperatures stick around
for one last day before a storm pushes into the region late
tonight into Thursday. The storm on Thursday will bring a strong
cold front through western nevada with gusty winds as well as
rain, snow, and pellet showers. Cooler temperatures will stick
around through the end of the week behind this cold front.

Short term...

latest visible satellite imagery shows cloud cover increasing
across northern california and northwest nevada ahead of next
spring storm which will arrive earlier Thursday morning. This
storm will provide a strong and fast moving cold front which will
races through the region early tomorrow morning.

This front will be accompanied by a strong surface pressure
gradient which will result in stout sustained winds and valley
gusts in the 40 to 50 mph range. The strongest winds in the area
are expected through mineral and southern mono counties where the
gradient and terrain orientation will be favorable to produce
sustained wind as high as 30 to 40 mph with gusts exceeding 60
mph. High wind warnings are in place for mono-mineral with wind
advisories covering most other areas across the tahoe basin and
northwestern nevada.

Forecast simulations continue to quickly push the cold front near
the i-80 corridor around 6-8am. This front is also rather dynamic
and will provide the best chances for precipitation as it moves
through. There is enough instability and frontogenetical forcing
to yield convective banded precipitation along the front which
could even yield isolated thunderstorms in the morning. Snow level
will lower to around 6,000-6,500' behind the front but could
temporarily drop to near 5,000' right as the front passes. As
such will see a mix of rain and snow showers for valleys with
accumulating snow pellet (graupel) showers possible with the
front. A few inches of snowfall will be possible through the
sierra but should be a rather quick hit for precipitation with not
much accumulation expected along roadways.

Showers will shift into central nevada and diminish Thursday
evening into Friday morning. Surface winds will shift out of the
north to northeast and remain breezy Friday. Winds across ridgetop
will also become strong and gusty but will come out of the more
uncommon easterly direction. Winds lighten for Saturday and highs
will rebound back into the mid and upper 60s across western nevada
with mid and upper 50s for sierra valleys. Fuentes
long term... Sunday through Wednesday...

on Sunday another fast cold front is expected to be brushing through
ne california and into nevada. Models have keyed in better with the
timing but continue to struggle with how much they want to dig this
shortwave in as it passes through the area. Currently it is enough
to cause an increase in winds, cloud cover, and bring about a chance
of light precipitation.

Monday and Tuesday will be a return to northwest flow with weak
shortwave building in for at least Monday. Tuesday another shortwave
could move through the flow, but at this time, it is only strong
enough to bring about a slight increase in winds and clouds. A large
scale trough developing in the eastern pacific begins to increase
the chances for precipitation for the second half of next week. For
more on this check out the new week 2 outlook below. -zach
week 2 outlook... Issued 3pm 3/29
the last few weeks the west coast has been in a fairly typical
spring weather pattern. The pacific jet stream was retracted to the
west allowing weak fast moving low pressure systems to drop out of
the far eastern gulf of alaska with limited moisture potential.

This is expected to change next week as the jet strengthens and
moves into the eastern pacific. Ensemble models are in good
agreement that a large area of low pressure will deepen along the
west coast. Atmospheric river (ar) detection tools show a strong
signal for an ar to impact the west coast in the 7-10 day time

At this point, it is likely that an ar will reach the west coast by
the end of next week with the current forecasts favoring the
pacific northwest; however, intensity and especially latitude are
still in the realm of low predictability. The deepening low
pressure and strengthening jet in the eastern pacific, along with
strong ar signals for the west coast during the second half of
next week increase the chances for a return of stronger storms
impacting the sierra and western nevada. The main question is how
far south will the moisture and jet stream drop next week.

Increased chances are not a guarantee, but definitely worth
keeping an eye on as a direct hit from another ar would again
increase flooding concerns in the region. -zach
* the week 2 outlook discussion is an experimental part of the area
forecast discussion. This product is designed to highlight the
potential for significant pattern changes beyond day 7 and will
not be issued on a daily basis.


a strong fast moving cold front will move through the region late
tonight through early afternoon Thursday. Winds will increase this
afternoon and overnight ahead of the front. Along the front, a few
hours of rain/snow pellet showers will be possible, especially for
ktrk/ktvl where reduced vis/cigs and mountain obscurations will be
likely. Isolated thunderstorms will also be possible for a few hours
for all terminals as the front moves through. Strong winds at all
terminals are likely with low level wind shear also possible
along the leading edge of the front.

Current estimate for timing at ktrk/ktvl/krno/kcxp is this: best
chance for wind shear and possible light showers 9-12z. Possible wind
shear with increasing chances of rain/snow and thunderstorms 12-17z.

For kmmh the timing will be about 4-6 hours later with stronger
winds likely for mono county. -zach

Rev watches/warnings/advisories
Nv... Wind advisory from 5 am to 11 pm pdt Thursday nvz004-005.

High wind warning from 8 am to 8 pm pdt Thursday nvz001.

Wind advisory from 5 am to 8 pm pdt Thursday nvz002.

Wind advisory from 5 am to 8 pm pdt Thursday nvz003.

Ca... Wind advisory from 5 am to 11 pm pdt Thursday caz070.

High wind warning from 8 am to 8 pm pdt Thursday caz073.

Wind advisory from 5 am to 8 pm pdt Thursday caz072.

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


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fallon, Naval Air Station, NV16 mi47 minWNW 410.00 miMostly Cloudy54°F35°F49%1014.1 hPa

Wind History from NFL (wind in knots)
Last 24hrSE3S5S7S6S4S4S6SW4S3S4S6S53NE4CalmS6SW4CalmW3NW7
1 day agoCalmSE3CalmW4W4S4SE5S4S3Calm6N536NE8E7N9
2 days agoW14NW9N4NW6NE4NE5W10W10N6NW10NW9NW12

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
IR Satellite Image from GEOS

GOES Local Image of CentralWestCoast    EDIT

Wind Forecast for Reno, NV (2,6,7,8)
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Ground Weather Radar Station Reno, NV
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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 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 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.