Saturday, March17, 2018

Marine Weather and Tides
Springdale, UT

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
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.

Sunrise 7:39AMSunset 7:45PM Saturday March 17, 2018 12:17 AM MDT (06:17 UTC) Moonrise 7:01AMMoonset 7:03PM Illumination 0% Phase: New Moon; Moon at 0 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 Springdale, UT
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location: 37.24, -112.98     debug

Area Discussion for - Salt Lake City, UT
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Fxus65 kslc 170439
area forecast discussion
national weather service salt lake city ut
1039 pm mdt Fri mar 16 2018

Synopsis The broad upper level trough approaching the western
great will continue into utah for late Saturday night through
Sunday. Cool and unsettled conditions will across the area this
weekend. High pressure aloft will return for the first half of
next week and bring a warming trend to the region.

Short term (through 00z Tuesday) The upper trough with it's
well-defined circulation center near the california oregon nevada
triple point this evening will continue on a slow eastward track
across the great basin this weekend. Scattered weak convection has
expanded out well ahead of the trough across western utah this
evening. This activity is likely being driven by a weak vorticity
lobe ejecting northeast out of the advancing trough. Suspect this
activity will thin out a bit later tonight, with residual showers
confined mainly to northern utah later tonight.

The fairly tight near 700mb baroclinic zone associated with the
advancing trough will reach the utah nevada border region late
tonight. This boundary is already convectively active this
evening, and will likely stay that way as it reaches the border
late tonight. This low-level baroclinic zone will weaken somewhat
as it advances into western utah Saturday morning. However, with
the mid-level trough and cold air aloft close on it's heels, will
still look for an increase in precip during the day Saturday, with
this widespread snow continuing into the evening hours. Lowering
snow levels and fairly decent synoptic-scale lift will generate
plenty of accumulating snows in the mountains, with the adjacent
higher western valleys also picking up some accumulation.

Precip will shift east ahead of the trough as it moves across utah
late Saturday night through Sunday. Instability showers will
trail the passing trough axis as the mid-level cold pool moves
across mainly northern central utah during the afternoon and
evening. Clearing late Sunday night will be slow to develop as
low-level remains entrenches across much of the state. Clouds
will fill back in early Monday, then finally begin to clear out
late Monday as heights begin to build to the west of the state.

Issued earlier updates to bring showers in overnight and to boost
temps a few degrees to account for cloud cover and breezy south

Previous long term (after 00z Tuesday) Global models are in
good agreement through the Tuesday through Thursday period with a
ridge building into the area Monday night into Tuesday, then
transitioning to southwesterly flow and increasing moisture
Wednesday into Thursday. Although the ec is a bit faster in
building the ridge into the area late Monday than the GFS and
canadian, the only real effect will be a few degrees difference in

The GFS and ec are now both intent on spreading pacific moisture
into the area by Wednesday afternoon within the mild southwesterly
flow that strengthens ahead of a deepening upstream trough. Abundant
moisture would bring widespread precipitation to the area. Snow
levels will remain on the high side through Thursday. The upstream
trough is then forecast to weaken as it ejects across the western
conus. This is where model spread increases. Colder air is forecast
to spread into the area late Thursday night into Friday, but the
extent of this cold air is dependent on how far north the trough
lifts before crossing utah. Nevertheless, there is a potential for
snow to reach the valley floors on Friday.

Aviation Scattered showers will cross the terminal area
overnight. These showers will briefly lower ceiling to around 4000
feet, otherwise ceiling swill hover between 7000 and 8000 feet.

Prevailing south-southeast winds are expected into Saturday
morning. The upper low over the west coast states this evening
will continue to advance towards utah overnight through early
Saturday. South winds will pick up Saturday morning, with
widespread rain or snow to follow during the late morning through
Saturday evening hours. Occasional MVFR ceilings visibilities are
expected the heavier precip.

Slc watches warnings advisories
Ut... Winter weather advisory from noon Saturday to noon mdt Sunday
for utz009-010-517-518.

Winter weather advisory from 6 am Saturday to midnight mdt
Saturday night for utz008.

Wy... None.

Short term aviation... Conger
long term... Cheng
for more information from noaa's national weather service visit...

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

http: weather.Gov saltlakecity general afd_faqs.Php

Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
St George Municipal Airport, UT31 mi21 minVar 310.00 miFair53°F23°F31%1008.7 hPa

Wind History from SGU (wind in knots)
Last 24hrS4SE6E3CalmSE5CalmSE4CalmCalmSW4Calm3E9SE53NE4SW16
1 day agoS8SW5SE5CalmS3NW3S4SW3CalmS10W10
2 days agoE7E11SE7SE4SE12SE12E12SE6E9E13E7SW5S18

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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GOES Local Image of Southwest    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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Salt Lake City, UT (2,6,7,8)
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Ground Weather Radar Station Cedar City, UT
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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.