Saturday, December7, 2019
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Marine Weather and Tides
Kanab, UT

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:32AMSunset 5:14PM Saturday December 7, 2019 5:55 PM MST (00:55 UTC) Moonrise 2:49PMMoonset 2:51AM Illumination 84% Phase: Waxing Gibbous; Moon at 11 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 Kanab, UT
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location: 37.11, -112.22     debug


Area Discussion for - Salt Lake City, UT
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FXUS65 KSLC 072301 AFDSLC

Area Forecast Discussion National Weather Service Salt Lake City UT 401 PM MST Sat Dec 7 2019

SYNOPSIS. Southwesterly flow will prevail today. The next storm system will impact the region late tonight through early Monday, with drier conditions returning early next week.

SHORT TERM (Through 00Z Wednesday). A filling upper level low is currently located near the California/Oregon line and will continue to weaken through today. A splitting trough will cross into the West and pick up the remnants of this low tonight. This trough will remain weak . with the base of the trough crossing into Arizona Sunday into Monday.

This is a rather disorganized system with limited forcing to account for any widespread and significant precipitation. The main mid-level front will cross the state tonight into late Sunday. This will likely be the heaviest band of precipitation for most locations. Unstable northwest flow should bring a period of orographically enhanced snow to the northwest favored slopes, especially the Cottonwood Canyons Sunday into early Monday.

Areas such as the Cache Valley and northern Wasatch Front Brigham City and north may see a rain/snow mix or even snow as early as late tonight as cold pools are fairly resistant in these areas. Any accumulation in these areas will be limited and will depend on higher precipitation rates. Most valley locations will see at least a period of light rain/snow or snow Sunday night into Monday but again impacts are expected to be minimal.

The best news with this system is mid-level cooling and valley mixing should be sufficient to break down the inversions that have been present over the last few days.

Given the potential for winter driving conditions/travel impacts for mountain passes, especially the Cottonwood Canyons, the Wasatch Plateau and the higher summits on I-15 near Cove Fort, issued a winter weather advisory for the mountains of Utah early Sunday into Monday. Western/northwestern facing slopes will have the best totals with this system.

Upper level ridging will build into the state behind this storm for the remainder of the short term forecast period.

LONG TERM (After 00Z Wednesday). A shortwave trough is still progged to undercut the strong ridge over the West Coast and track across the Great Basin as a splitting feature. The GFS and GEFS mean 500mb heights remain lower over Utah than the EC and EPS mean, and 700mb temperatures are colder as well. The deterministic GFS is also less splitty than the EC, taking the vort max associated with the southern split across Utah rather than just to the south. Although have left mentionable weather out of the forecast for this storm for now, the chance that the GFS solution with its slightly better dynamics and stronger cold advection could bring some very light precipitation to the area.

A near zonal or slight northwesterly flow aloft will settle into the area Thursday through the end of the week. Weak ripples embedded in the flow grazing northern Utah are expected to bring some precipitation to northern Utah during this time. Precipitation may begin as snow or a wintry mix with the initial round or precipitation, but the unsettled weather, increased flow, and nighttime cloud cover may work together to gradually weaken valley inversions over time.

A shortwave trough is then progged to approach the area at the end of the forecast period, pushing a cold front through the area.

AVIATION. Low-end VFR conditions at the SLC terminal will likely be reduced to IFR or LIFR after 00-02z. Conditions are then expected to gradually improve late tonight as the next storm system works its way into the area. There may be a return to MVFR or VFR conditions after 07-08z, but more likely this will not occur until after 10-12z as rain or a rain/snow mix begins to develop. Winds will be light northerly through early this evening, then switching to light south and gradually increasing overnight.

SLC WATCHES/WARNINGS/ADVISORIES. UT . Winter Weather Advisory from midnight tonight to 10 AM MST Monday for UTZ007>010-517.

Winter Weather Advisory from 5 AM Sunday to midnight MST Sunday night for UTZ518.

WY . None.



Kruse/Cheng

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
Bryce Canyon Airport, UT42 mi63 minSE 127.00 miOvercast35°F33°F93%1019.5 hPa

Link to 5 minute data for KBCE

Wind History from BCE (wind in knots)
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Last 24hrS11S11S4S3CalmCalmCalmCalmNE4SE4CalmS6SW3W4W4SW3CalmSE11SE13SE9S11S10SE12SE12
1 day agoW10W8W6W8W7NW4W4W3W6SW3CalmSW4SW3SW4CalmCalmSW4CalmS7S7SE7S8S4S8
2 days agoSE10S12S10SE10SE11SE8SE11SE7SE7SE9SE6SE5S7SE4NW3W5NW5W7W5W7W7W8W10W6

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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wmap_P
GEOS 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 (19,4,5,8)
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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 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.