Friday, March24, 2017 L-36.com


Marine Weather and Tides
Hanksville, UT

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 7:07AMSunset 7:32PM Friday March 24, 2017 5:58 PM MDT (23:58 UTC) Moonrise 4:18AMMoonset 3:10PM Illumination 7% 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 Hanksville, UT
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location: 38.52, -110.28     debug


Area Discussion for - Salt Lake City, UT
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Fxus65 kslc 242130
afdslc
area forecast discussion
national weather service salt lake city ut
330 pm mdt Fri mar 24 2017

Synopsis A pacific weather disturbance late tonight through
Saturday. Another storm system will impact the area the first half
of next week.

Short term (through 12z Monday) The ridge axis of a mid level
ridge has continued to slowly shift downstream today allowing a
mild southwesterly flow to translate overhead in advance of the
next land falling upper trough along the pacific coast. A
relatively deep moisture tap is coincident with this trough
extending southwest off the socal coast, and it will remain so as
it continues to translate east into the great basin states
for a period overnight.

Upper level cloud cover is expanding rapidly over nevada
downstream of the sierra, and will trend to increase locally
through this evening and overnight. Though not overly cold
(trough), airmass differences will set up a decent cold front
tonight over the nv/id/ut triple point increasing precip over the
extreme northwest tonight. This front does trend somewhat
frontolytic tomorrow morning with southeastward translation
however, this as the upper trough dives southeast and
weakens/splits slightly. Surface reflection is evident, but
weakening in time looking at mslp trends in guidance. This said,
solid CAA coupled with copious deep layer moisture (pwat pushing
.6 inches) will drive a period of moderate to heavy precip across
much of western/northern ut from frontal passage (morning hours)
through the mid level axis passage (afternoon hours). Breadth of
cold advection and anticipated pi rates will have the potential to
lower snow levels to or just below 6kft during that time, but
bulk of accumulating snow looks to remain above 7500ft where in
general 2-6 inches of snow will fall in the mountains (locally up
to 8 inches in the cottonwoods). Regarding valley rain, .25-.50
inches looks like a safe bet across the north with less in
central/southern utah.

The progressive nature of this trough will carry the mid level
axis east tomorrow afternoon, and although a somewhat moist caa
nw flow will remain in place going into the overnight hours, flow
orientation will be trending anticyclonic and stabilizing quite
rapidly. Expecting bulk if not all precip to wind down tomorrow
evening as such.

The wave train continues from there, with ridging/warming for
Sunday, a few showers across the north associated with warm
advection Sunday night, and increasingly SW flow aloft ahead of
the next trough approaching Monday morn.

Long term (after 12z Monday) The long term period begins with
a trough centered upstream of the area over the pacific coast. Since
yesterday's 12z cycle, guidance has come into much better agreement
regarding the evolution of this feature... Essentially keeping it as
an open wave while it moves over utah late mon/early tues before
finally closing it off as it digs south over the four corners. Given
this projected track expect widespread precip to impact much of the
state mon-tues... With relatively high fcst. Precip totals over
northern/central utah Monday afternoon-evening in association with
an active (although not particularly tight) mid-level baroclinic
zone and adequate moisture (~90-95th percentile pwats are forecasted
by the GFS ensembles). As this trough and associated front pass
through the state, average snow levels will fall from around 7k feet
mon afternoon to around 5k feet Tuesday morning. Despite most
guidance keeping snow levels just above n.Utah valley floors for the
duration of precip can't completely rule out some snow falling on
the northern valley floors Monday night/tues morning. However, this
period of snow would likely be brief with limited impacts (as the
bulk of the precip should occur when snow levels are over 6k feet).

There is potential for some higher elevation impacts with this
system, however, fairly low snow ratios may limit accumulations even
in locations where most of the precipitation falls as snow.

As the low progresses eastward into new mexico during the day on
Tuesday, precipitation should taper pretty quickly across the state
from west to east as heights rise and mid level temps warm. This
warming trend and tranquil weather should continue into Thursday,
before another colder pacific trough is progged to dig/amplify over
the state of utah. This scenario would result in a fairly potent
frontal system impacting the state and also a rather cold
postfrontal airmass settling over the state late thurs/early Friday.

For example the GFS forecasts h5 temps around -29c and h7 temps
around -11c in northern utah early Friday, which if verified would
be the coldest temps we have seen in over 3 weeks. Such a system
would likely result in snow levels falling to valley floors and at
least a day or two of rather cold (by late march standards)
temperatures. However, being 6 days out (despite relatively good
agreement between guidance at the moment) did not make too many
fcst. Edits besides lowering snow levels/decreasing temps slightly
and raising pops Thursday into Friday

Aviation Increasing clouds will continue through the overnight
hours at the slc terminal. CIGS approaching 6000 ft and lowering by
12z Saturday as rain showers develop area wide. Conditions should
transition to MVFR after 14z in the heaviest rain, and improve to
vfr after 20z. Winds should remain southerly through the overnight
hours and may be gusty at times.

Slc watches/warnings/advisories
Ut... None.

Wy... None.

Merrill/carr/dewey
for more information from noaa's national weather service visit...

http://weather.Gov/saltlakecity
for frequently asked questions about the area forecast discussion
visit...

http://weather.Gov/saltlakecity/general/afd_faqs.Php


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

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Last 24hr----------Calm----------Calm----Calm----Calm----Calm----Calm
1 day ago----------Calm----Calm----Calm----Calm----Calm----Calm----Calm
2 days ago----------Calm----Calm----Calm--CalmSW8----N7----Calm------

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
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GOES Local Image of CentralPlains    EDIT
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Wind Forecast for Salt Lake City, UT (19,4,5,8)
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Ground Weather Radar Station Grand Junction, CO
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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.