Thursday, March30, 2017 L-36.com


Marine Weather and Tides
Springdale, 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 7:19AMSunset 7:56PM Thursday March 30, 2017 2:26 PM MDT (20:26 UTC) Moonrise 8:18AMMoonset 10:06PM Illumination 12% 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 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 301618
afdslc
area forecast discussion
national weather service salt lake city ut
1017 am mdt Thu mar 30 2017

Synopsis An upper low will develop across the great basin
today, then slowly drift east along the utah arizona border
tonight through Friday. High pressure will return Saturday,
followed by another cold front early next week.

Discussion The upstream trough is currently evident on satellite
imagery diving south over california and is accompanied by a potent
cold front which is currently crossing central nevada. Ahead of this
storm, precipitation has developed across northern utah given a
combination of increasing upper diffluence, cooling aloft, and warm
temperatures at 700mb. Snow levels remain high with this initial
round of precipitation with 700mb temperature remaining in the -1 to
-2c range. Dual-pol data and bright banding on kmtx support snow
levels around 7500ft. This prefrontal precipitation will continue
spreading into southwest wyoming, through the uintas, and into
castle country late this morning into this afternoon.

Winds will increase ahead of the front, strongest across southern
utah. A wind advisory remains in place along the arizona border.

Considered adding the southwest utah zone which includes cedar city
and milford, but duration will be shorter and increasing cloud cover
and precipitation through the afternoon hours may hinder mixing.

The trough will pinch off into a closed low over nevada and as it
does so, the cold front will slow and then weaken over utah this
afternoon and evening. An initial look at the 12z GFS shows the
front making slightly less eastward progress over utah. Still,
enough of a surface gradient will exist to bring some gusty
postfrontal winds to the western utah valleys. A wind advisory
remains in place for these postfrontal winds across northwest utah.

Precipitation will increase across western utah along the boundary
this afternoon. This will be widespread and locally heavy at times
and may contain embedded thunderstorms. With the low center then
tracking across southern utah tonight into tomorrow, moisture
wrapping around the low will favor southern and portions of eastern
utah as well as southwest wyoming, but in particular the i-15
corridor across southwest utah and adjacent mountains. The coldest
air will be near the low center across southern utah, and looks to
fall into the 4500-5500ft range. Various going winter weather
highlights cover areas of concern.

Easterly flow across northern utah developing tonight and maxing out
tomorrow night into Saturday morning is still worth watching.

Currently, the surface gradient does not appear to be especially
tight, and although 700mb winds are forecast to reach 50kt across
northeast utah and southwest wyoming, the lack of any decent cold
advection except for a period Friday night into early Saturday
morning suggest the likelihood for a significant wind event is not
very high at this time. That being said, local gusty winds are still
expected, especially near canyons.

No updates this morning.

Aviation Showers will be moving in the vicinity of the slc
terminal at times this morning, the main impact of these being
occasional periods of erratic winds and ceilings dropping below 7k
feet. Outside of these showersVFR conditions and at times strong
southerly winds will prevail until frontal passage around 22-23z.

Fropa should bring a period of MVFR rain and a wind shift to the
northwest.

Slc watches/warnings/advisories
Ut... Wind advisory from 2 pm this afternoon to 9 pm mdt this evening
for utz019>021.

Winter storm warning from 6 pm this evening to 6 am mdt Saturday
for utz009-015-016-517-518.

Winter weather advisory from 6 pm this evening to 6 am mdt
Saturday for utz007-008-010-014.

Wind advisory from 2 pm this afternoon to 4 am mdt Friday for
utz005.

Wy... Winter weather advisory from 3 am Friday to 6 am mdt Saturday
for wyz021.

Cheng/carr
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
St George Municipal Airport, UT31 mi90 minSW 410.00 miFair69°F30°F23%1001.3 hPa

Wind History from SGU (wind in knots)
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Last 24hr3S6SW8W7SW10SW18SW6SW6SW3CalmCalmSE3SE3SE6CalmCalmCalm--CalmCalmCalmNW7W9SW4
1 day agoNE17
G24
N9
G15
NE9
G22
NE15
G20
NE11
G25
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G27
NE18NE10S84NE6N8N6CalmCalmCalmCalmSE6CalmCalmNW4CalmNE64
2 days agoW20
G28
NW15
G25
--NW13
G18
W18
G24
E6E5SW11E7W8W4S10S6S83SW4SW8SE9S10E8NE14NE19
G25
NW5S13

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
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of Southwest    EDIT
Geos

Wind Forecast for Salt Lake City, UT (16,3,4,5)
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Ground Weather Radar Station Cedar City, UT
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weather_mapweather_map weather_map

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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.