Marine Weather and Tides
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 7:24AM||Sunset 7:50PM||Saturday March 25, 2017 7:44 AM MDT (13:44 UTC)||Moonrise 5:03AM||Moonset 4:23PM||Illumination 4%|
EDIT (on/off)  Help
7 Day Forecast for Marine Location Near Kanab, UTHourly EDIT Help
Area Discussion for - Salt Lake City, UT  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus65 kslc 250936|
area forecast discussion
national weather service salt lake city ut
336 am mdt Sat mar 25 2017
Synopsis The upper level trough will move east across the
great basin today. High pressure aloft will return briefly on
Sunday, followed by another storm system for early in the upcoming
Short term (through 12z Monday)
Water vapor satellite shows the ridge axis has shifted east as
the next storm approaches from nevada. 400-200mb mdcars wind
observations place a 115-135kt cyclonic jet from off the pacific
northwest coast into the northern rockies. Goes/slc 00z raob/hrrr
indicate that precipitable water values vary from 0.20"-0.30"
mountains to 0.40"-0.65" valleys. Blended precipitable water
product shows an atmospheric river from the tropics into southern
There are many things going for today's precipitation event.
During the next 24 hours a strong height fall/rise couplet crosses
overhead. Far northern utah may benefit from lift associated with
the right entrance region of an upper level jet, at least this
morning. The system has a moisture tap back to the tropics. There
is enough cold advection to foster instability development today
per sref. In fact SREF indicates a high enough chance for thunder
to include this afternoon and evening across southern utah.
Snow levels fairly consistent near 7kft today, perhaps lowering in
areas of higher precipitation rates. Snow levels fall below 6 kft
tonight, but this is mostly after precipitation ends. A winter
weather advisory has been issued for most mountain zones as winter
driving conditions will likely be widespread above 7000 feet.
Height rises, warming aloft and increasingly anticyclonic flow
should shut off precipitation processes tonight.
Next storm system drops into the pacific northwest Sunday. As a
result of lowering heights, increasing 700-500mb lapse rates, and
the approaching cold front crossing into northern utah Sunday
night, carrying slight chance to chance pops heading into Monday
Long term (after 12z Monday)
The next storm system is expected to dive into the great basin
during the day Monday before tracking southeast into arizona
Monday night/Tuesday morning. This will drop a cold front through
western utah during the day Monday and across the rest of the
state by Tuesday morning. Moisture and instability look good in
association with this boundary, so it should bring a nice initial
brand of precip with showers continuing into much of Tuesday. 700|
mb temps are a little warmer in guidance this morning compared to
yesterday, primarily in the -5c to-7c range. This would keep snow
levels above most northern utah valley floors but could have some
impacts as low as bench locations. Precip is progged to taper off
from west to east during the day Tuesday as the trough tracks away
from the forecast area. Overall, have raised pops given increased
confidence due to model agreement and good run-to-run
High pressure is then expected to return for Tuesday night/early
Wednesday but after that guidance diverges a bit. GFS holds onto the
ridge through much of Thursday but the ec brings a weak shortwave
and associated cold front into utah and southwest wyoming. As a
result, there is a noticeable difference in 700 mb temps in the
models by Thursday morning with the ec showing -3c to -5c and the
gfs much warmer at +2c to +4c, which makes the Thursday maxt
forecast a bit problematic. Have favored the GFS somewhat as it has
been more consistent in its solution.
All models indicate a potent pacific northwest storm system
impacting the forecast area late Thursday through Saturday. Ec is
about twelve hours faster bringing the initial front through
compared to the GFS but both take the low on a similar track through
southwest utah and into arizona and new mexico. GFS showers a colder
front with 700 mb temps as low as -11c. Ec looks to keep the coldest
air just to the west of the forecast area but still drops 700 mb
temps as low as -8c. High pressure is then expected to return behind
this system for the end of the forecast period.
Vfr conditions are expected at the slc terminal through the
morning. CIGS are expected to fall to or below 6000 feet agl
between 12z and 14z with rain developing over the terminal. There
is a 30 percent chance of MVFR conditions developing in heavier
rain, primarily before 18z. West to northwest winds are expected
to continue through the day.
Short term... Rogowski
long term/aviation... Traphagan
for more information from noaa's national weather service visit...
for frequently asked questions about the area forecast discussion
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Bryce Canyon Airport, UT||42 mi||51 min||N 0||10.00 mi||Fair||30°F||26°F||85%||1013.5 hPa|
Wind History from BCE (wind in knots)
|1 day ago||NW||W||W||W||NW||W|
|2 days ago||SW||Calm||SE||E||S||S|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help
EDIT (on/off)  Help
Weather Map and Satellite Images(on/off)  Help
|Weather Map ||IR Satellite Image from GEOS|
GOES Local Image of Southwest EDIT
Wind Forecast for Salt Lake City, UT (9,2,3,4)(on/off)  Help
Ad by Google
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.