Monday, June26, 2017 L-36.com


Marine Weather and Tides
Salt Lake City, 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 5:56AMSunset 9:04PM Monday June 26, 2017 4:17 PM MDT (22:17 UTC) Moonrise 7:59AMMoonset 10:21PM Illumination 8% 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 Salt Lake City, UT
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location: 40.78, -111.93     debug


Area Discussion for - Salt Lake City, UT
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Fxus65 kslc 262143
afdslc
area forecast discussion
national weather service salt lake city ut
343 pm mdt Mon jun 26 2017

Synopsis A weak upper trough will cross the region tonight and
Tuesday. Additional weak troughs will clip northern utah through
Thursday.

Short term (through 12z Thursday) High pressure has shifted
just east of the forecast area this afternoon ahead of a trough
currently moving onshore along the pacific coast. Increasing
southwest flow has drawn some high based moisture into the
forecast area, which has combined with the increasing instability
ahead of the approaching system to result in some showers, with
the greatest coverage currently over the higher terrain of
northern and central utah as well as the northwest desert. The
threat of showers continues for all but southwest utah (where a
dry slot is moving in) through the evening. Increasing winds ahead
of the system are combining with the dry airmass to produce
critical fire weather conditions over central and southern utah.

See the fire weather section of the afd for more details.

Temperatures have warmed about 5f over northern utah and southwest
wyoming compared to yesterday with maxes running up to 15f above
seasonal normals, as temperatures over southern utah remain
similar to yesterday.

The trough is expected to graze northern utah tonight into
tomorrow, bringing a mostly dry front into utah and southwest
wyoming. This will result in noticeable cooling (maxes tomorrow
will be more like 5-7f above seasonal normals) and will also
stabilize the airmass somewhat, limiting the convective threat
tomorrow. However, gusty west to southwest winds will result in
critical fire weather conditions over a broader area than today.

The zonal flow will continue through midweek, with a slow cooling
trend as additional mostly dry fronts cross northern utah Tuesday
night and Wednesday night.

Long term (after 12z Thursday) The axis of the main long wave
trof is forecast to be east of ut and over the western plains at
the start of the long term period with a short wave dropping into
the base of this trof crossing NRN ut. This wave reinforces the
cool air over the north while little if any of this cooling makes
it into the south.

Models hint at a small threat of weak convection along the stalled
frontal boundary across central ut Thu aftn but don't see much if
any threat of actual showers. Weak short wave ridging with
building heights is forecast for Fri and little if any threat of
convection. It will stay cool again north with some slight cooling
south.

Med range guidance diverges Sat with one more short wave digging
down from the north in the GFS flattening the ridge while a weak
wave moves in from the southwest in the ec with the ridge
remaining in place but shifting into ERN ut. Both would bring an
increase in the threat of convection altho it ends up in different
parts of the CWA by Sun aftn. So confidence drops off in the
forecast rapidly over the weekend.

Aviation Winds at the kslc terminal will remain from the south
through the evening. There is a small chance of a wind shift to
the north before 03z, however confidence is low and was taken
out of the current taf. Isolated showers and thunderstorms are
possible across northern utah into this evening, and will create
gusty and erratic winds likely impacting the terminal.

Fire weather Ridge axis has moved east of the district this
afternoon ahead of an approaching trough, allowing for an
unstable southwest flow to develop with increasing high based
moisture. This flow is resulting in gusty winds over central and
southern utah, which are combining with the already dry conditions
to result in critical fire weather conditions. Fire danger is
elevated across the entire district with a haines index of six
today. The increase in moisture is also resulting in isolated high
based thunderstorms across portions eastern portions of the
district as well as northwest utah which will continue into the
evening.

A cold front will move across northern utah tonight, reducing the
haines index there as it remains a six over central and southern
utah. A somewhat unstable zonal flow will be dominant over the
district during the middle of the week as dry conditions persist.

Winds will be strong enough over southern and eastern portions of
the district tomorrow and Wednesday to result in severe fire
weather conditions, so have expanded and extended the red flag
warning. High pressure is expected to return Friday through the
first part of the weekend.

Slc watches warnings advisories
Ut... Red flag warning until 10 pm mdt Wednesday for utz493-495-496-
498.

Red flag warning from 10 am Tuesday to 10 pm mdt Wednesday for
utz479-482-484-488-489-494.

Red flag warning until 10 pm mdt this evening for utz492-497.

Wy... None.

Short term fire weather... Traphagan
long term... Wilensky
aviation... 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
Salt Lake City, Salt Lake City International Airport, UT2 mi23 minS 10 G 2010.00 miMostly Cloudy98°F30°F9%1007.6 hPa
Hill Air Force Base, UT24 mi79 minSE 710.00 miA Few Clouds90°F33°F14%1010.6 hPa

Wind History from SLC (wind in knots)
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Last 24hrNW7N8N9N9N9N6SW5--------S5--S7CalmSE7SE7S9S74SE11
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1 day agoN6N10
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NW8N5N6S4S3SW3S4SW4CalmSE4CalmS4CalmSW3NE34NW643E5NW6Calm
2 days agoN8NW56NW5W7W3SE3S5S3W3SE4S4S5S3--SE6S4CalmNW433W8N9NW8

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 CentralPlains    EDIT
Geos

Wind Forecast for Salt Lake City, UT (18,4,5,8)
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Ground Weather Radar Station Salt Lake 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.