Tuesday, January21, 2020
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Marine Weather and Tides
Kanab, UT

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.

Sunrise 7:42AMSunset 5:44PM Tuesday January 21, 2020 8:08 AM MST (15:08 UTC) Moonrise 4:58AMMoonset 2:56PM Illumination 13% Phase: Waning Crescent; Moon at 26 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 211127 AFDSLC

Area Forecast Discussion National Weather Service Salt Lake City UT 427 AM MST Tue Jan 21 2020

SYNOPSIS. A couple of weak weather systems will pass through the region through Wednesday. High pressure will return late in the week.

SHORT TERM (Through 00Z Saturday). A pair of shortwave troughs will impact the forecast area over the next 36 hours. The lead shortwave is currently lifting through the lower Colorado River valley, while an upstream wave is making landfall along the Pacific Northwest coast.

The lead wave will continue on an east-northeast trajectory this morning. Large scale ascent, albeit weak, ahead of this wave has overspread southern and central UT early this morning, as noted by cooling cloud tops in IR imagery and an increase in radar returns across the area. A dry sub-cloud layer is keeping this precipitation from reaching the surface across the valleys as the column slowly saturates from the top down, however higher elevations across central and southern Utah are likely seeing periods of light snow. This will continue through the morning hours with scattered precipitation eventually reaching the valley floors before large scale forcing shifts east this afternoon. As such have maintained chance PoPs across the valleys of central and southern UT and likely PoPs in the higher terrain. The southern/central Wasatch Front remains on the northern fringe and have included only slight chance PoPs across these areas.

A brief break in precipitation is expected later this afternoon into this evening, before the second shortwave brushes by northern Utah overnight into Wednesday morning. The bulk of the upper forcing and cold air aloft will pass north of the forecast area, however sufficient lift should bring a round of mountain snowfall to northern Utah with a few inches of accumulation expected. Valleys can expect a rain/snow mix along the Wasatch Front, with snow expected in the Cache and other northern valleys where cold air remains entrenched. These locations may see an inch or two of accumulation while the Wasatch Front should see little if any.

In the wake of this second wave, mid level heights are expected to gradually rise through the remainder of the week as ridging amplifies upstream beginning Wednesday, then builds eastward through the remainder of the week. This may allow valley inversions to redevelop with a gradual increase in urban haze Thursday into Friday.

LONG TERM (After 00Z Saturday). A brief redevelopment of the 500mb ridge is expected to occur over the weekend, however, significant valley inversions will likely not be able to develop as this feature should slide eastward rather quickly. Afterwards, a trough will begin to move inland over the western U.S. by Sunday evening, allowing for a period of enhanced southwesterly flow aloft. This period of enhanced southwesterly flow will act to increase surface temperatures and raise snow levels as we head into our next shot of precipitation across the forecast area.

Confidence for widespread precipitation along the mountainous terrain is continually increasing as successive model runs (both ensemble and deterministic) depict a very similar scenario. However, there still remains some discrepancy over the mean amplitude of the trough between the EPS and GEFS. At this time the GEFS solution supports a less amplified trough as compared to that of the EPS which suggests a cutoff system near the four corners region. In the deterministic realm, the GFS translates this less amplified trough to a round of enhanced precipitation across northern Utah with little emphasis on the southern portions of the state. In contrast, the ECMWF supports a round of enhanced precipitation to the north, but also favors a round of heavier precipitation across southern Utah as the system becomes cutoff over the four corners region. In any case, confidence for precipitation across northern Utah/ southwestern Wyoming is continually increasing while the solution for southern Utah remains up in the air.

AVIATION. Generally light southerly flow with periods of northerly flow will persist at the SLC terminal through ~20-21Z before becoming northwesterly. CIGs are expected to lower to around 5,000-6,000ft AGL around 12Z, and then again to around 3,000-4,000ft AGL by 03Z. VFR conditions are expected to prevail at the SLC terminal before deteriorating to MVFR by 03-04Z with the arrival of snow showers.

SLC WATCHES/WARNINGS/ADVISORIES. UT . None. WY . None.

Seaman/Webber

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 mi16 minN 02.50 miLight Snow Fog/Mist26°F23°F88%1016.6 hPa

Link to 5 minute data for KBCE

Wind History from BCE (wind in knots)
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Last 24hrCalmNE3SE6E4--S5S6S4S5SE4N3SE7SW4S5NW4CalmS5SE10SE9SE11SE7SE6S7Calm
1 day agoW10W6W5NW3N3CalmCalmCalmCalmSW3SW5W3W6W5W5W7CalmSW5W5SW3CalmCalmCalmW5
2 days agoW53CalmN3NE3CalmSE7SE4--CalmSW5W4CalmW9W6W9W6W10W6W9W9W8W10W9

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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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 (10,2,3,4)
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Ground Weather Radar Station Cedar City, UT
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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 numerous 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.