Friday, January17, 2020
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Marine Weather and Tides
Samak, 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 7:45AMSunset 5:28PM Friday January 17, 2020 6:44 PM MST (01:44 UTC) Moonrise 12:30AMMoonset 12:12PM Illumination 47% Phase: Third Quarter Moon; Moon at 22 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 Samak, UT
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location: 40.62, -111     debug

Area Discussion for - Salt Lake City, UT
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FXUS65 KSLC 172245 AFDSLC

Area Forecast Discussion National Weather Service Salt Lake City UT 345 PM MST Fri Jan 17 2020

SYNOPSIS. Gusty winds tapering off late tonight. High pressure builds in through the weekend. The next weather system approaches next week.

SHORT TERM (Through 00z Tuesday). Conditions continue to improve and clear rapidly from west to east behind the departing cold front this afternoon. The going winter weather advisory will expire as expected this afternoon as snowfall accumulations wind down. As the storm unfolded early this morning, impacts to the morning commute were noted along the Wasatch Front from Brigham City to Utah county and worse conditions existed in the canyons of the Wasatch Mountains. Snowfall rates of 2 to 4 inches per hour were observed during the heaviest accumulation period, with impressive amounts in just a short few hours (some 13 inches in just 3-4 hours were observed). Winds remained gusty in the mountain areas as well. As the front continues to push southeast, gusty winds are persisting this afternoon in the Uinta Basin and locations in Castle Country. As winds trend down going into the evening hours, felt the wind advisory was safe to let expire.

Rising heights behind the departing trough will allow some cloud cover to filter in overnight. As some of the snow has melted and with the cloud cover, the thought of dense fog does not seem reasonable this evening. Some low stratus may develop in locked in valley locations, such as Cache or some of the mountain valley areas but confidence is not very high for this phenomena. This will be something to look into for Saturday night as thinner clouds and less high moisture seems more reasonable, although it depends if much of the ground snow melts under clear skies Saturday.

Through the weekend high pressure will result in quieter weather conditions keeping temperatures just above seasonal normal and winds trending lighter. The ridge will begin to weaken Monday with a trough moving into the Western CONUS.

LONG TERM (After 00z Tuesday). Ensemble means and cluster analysis continue to point to a trough passage locally Tuesday night through Wednesday, but significant spread continues regarding amplitude of the feature as it translates inland. EPS maintains a lower amplitude feature with signs of a splitting (weaker), while the GEFS maintains more amplitude indicating a more consolidated feature (stronger). These signals can be noted in their respective deterministic runs as well . with both models carrying run to run consistency. Bottom line, high confidence in some sort of trough passage within this window, but low confidence continues regarding the details and significance of it. Some snow to valley floors remains possible, as do modest mountain accumulations.

Thereafter the upstream pattern shows signatures of a split flow regime over the northern Pacific, with progressive but rather weak features translating into the western CONUS late week or into the weekend Not too notable, but semi-active. active enough to preclude significant inversion conditions in our valleys/basins.

AVIATION. VFR conditions will be maintained at the KSLC terminal through the valid TAF period, but lingering mountain obscuration of local terrain does look to remain in place through 02/03z this evening. Northwesterly winds will remain in place through roughly 03z before switching to the south for the overnight hours.

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

SHORT TERM . Dewey LONG TERM/AVIATION . Merrill

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

Link to 5 minute data for K36U

Wind History from 36U (wind in knots)
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Last 24hrCalmSE6E3N5E3W4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmS7S11
G18		SW10
G15		SW13
G18		SW16
G24		SW15
G22		SW13S4
1 day agoSW6CalmE5E4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmS4SW4W4SW10SW9SW9
2 days agoE5E4SE5E4NE8E8CalmN9N9
G17		E5E4N9
G14		N14N7E5N9N13N10
G18		N11
G15		N4N5
G15		N7N8SW11
G16
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    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 (20,4,5,8)
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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 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.