Wednesday, February21, 2018 L-36.com


Marine Weather and Tides
Hanksville, UT

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 6:55AMSunset 6:00PM Wednesday February 21, 2018 5:54 PM MST (00:54 UTC) Moonrise 10:28AMMoonset 12:00AM Illumination 42% Phase: First Quarter Moon; Moon at 7 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
    EDIT      (on/off)   Help
7 Day Forecast for Marine Location Near Hanksville, UT
   Hourly   EDIT   Help
location: 38.52, -110.28     debug


Area Discussion for - Salt Lake City, UT
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus65 kslc 212312
afdslc
area forecast discussion
national weather service salt lake city ut
412 pm mst Wed feb 21 2018

Synopsis An active weather pattern will prevail through the
next 7 days as a series of weather systems move through the
region.

Short term (through 00z Sunday) Afternoon water vapor and h5
analysis continue to place the eastern pacific ridge along 150w,
with a long wave trough downstream encompassing the western conus
attm. Several short waves are either currently embedded within the
western flank of this trough, or lined up to crest the ridge and
become so moving forward through the forecast period. Due to the
amplitude and orientation of the western CONUS trough, an
unseasonably cold airmass will remain in place coincident, and
unsettled conditions with periodic snow will be the norm more
than not over the next 7 days.

Not much to note regarding the weak short wave currently dropping
southeast into southern nevada. Meager forcing moisture and track
well west south of the area will only promote clouds with
isolated snow showers over the central southern mtn spines.

Of more note is the next short wave currently showing signs of
sharpening along the southern britcol coast. Good agreement exists
in guidance that this wave will continue to sharpen as it
translates into the great basin tomorrow and then over the area
tomorrow night through Friday. Although this next short wave will
still largely have a continental track and sub par moisture weak
flow, enough forcing will be present across the area to generate
snowfall. Upper jet support and modest PVA (south), a mid level
circulation shear axis (northwest), and mid level axis passage
(areawide Friday) look to be the primary mechanisms to drive this
light to moderate snowfall at times tomorrow night through Friday.

Additional, the cold airmass in place and weak CAA with the wave
will allow even light amounts of new snow to stick to area
roadways periodically through that time. Focused concern areas
include i-15 largely south of slc, the southern 89 corridor down
to the ut az line, and portions of i-70, especially Thursday
night Friday morning.

Opted to not issue headlines at this time but have began messaging
for the likelihood of travel impacts (even light amounts of new
snow), as models are still lining up details regarding evolution
of some of these forcing mechanisms within this trough. Do have
highest confidence in forecast snowfall amounts across
central southern portions of utah where large scale ascent looks
more prolific, but some areas in the north remain questionable at
this time. Many areas will most likely see borderline sub normal
advisory criteria, but the travel impacts look to warrant
headlines in future shifts.

Downstream translation of the trough Friday night into Saturday
will allow for a brief and relative break from snowfall, but the
next sharpening wave will be right on the doorstep by late day as
the next progressive short wave moves in from the northwest.

Long term (after 00z Sunday) The long term period remains
dominated by a mean longwave trough over the western conus. As a
result, an active pattern featuring a series of shortwave troughs
crossing the area with periods of precipitation and unseasonably
cold temperatures will continue.

A fast-moving trough is still on track to cross the area Saturday
night into Sunday. The 12z and now the 18z GFS runs have trended
deeper with this storm. As a result, have spread higher pops farther
south. The next storm, a deeper and slower-moving system, is still
forecast to affect the area late Monday through the middle of next
week. However, this storm system is starting to trend towards a more
splitting pattern, especially now in the 18z gfs. While there is
lower confidence in the evolution of this particular system for now,
the global longwave pattern is not exhibiting any signs of a
significant change.

Aviation Northwest winds at the slc terminal are expected to
switch to the southeast by 03z this evening. Scattered high clouds
will persist overnight.

Slc watches warnings advisories
Ut... None.

Wy... None.

Merrill cheng 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
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Wind History from 4HV (wind in knots)
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
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
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help
Tide / Current Tables for
   EDIT      (on/off)   Help
Weather Map and Satellite Images
       (on/off)   Help
Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralPlains    EDIT
Geos

Wind Forecast for Salt Lake City, UT (19,4,5,8)
      (on/off)   Help

Ground Weather Radar Station Grand Junction, CO
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.