Tuesday, August11, 2020
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Marine Weather and Tides
Oakley, 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 6:33AMSunset 8:31PM Tuesday August 11, 2020 6:33 PM MDT (00:33 UTC) Moonrise 11:39PMMoonset 1:13PM Illumination 44% Phase: Third Quarter Moon; Moon at 23 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 Oakley, UT
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Area Discussion for - Salt Lake City, UT
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FXUS65 KSLC 112156 AFDSLC

Area Forecast Discussion National Weather Service Salt Lake City UT 356 PM MDT Tue Aug 11 2020

SYNOPSIS. A few areas will see a threat of mostly dry thunderstorms today through Thursday. Otherwise, seasonal temperatures with a limited chance for precipitation will continue through the week under southwesterly flow aloft. Hot temperatures will return for the upcoming weekend.

SHORT TERM. An area of enhanced moisture aloft extending across northern Nevada and into northwest Utah this afternoon is brining a few cumulus buildups over primarily the higher terrain of northern Utah. A second area of increased convective activity can be seen moving northward across the Utah/Arizona border. Area radars and surface observations show a few primarily dry thunderstorms mostly on the periphery of our forecast area as of this writing. CAMs continue to show activity in northwest Utah this evening with storms crossing the NV/UT border northwest of a roughly Wendover to Snowville line, and an isolated storm or two in the Lake Powell vicinity. Any storms that do move through would likely have gusty winds as the main threat. With a bit more potential coverage of storms over northwest Utah and given the lightning activity seen with storms yesterday, opted to add a Red Flag Warning through this evening for northwest Utah in coordination with the Great Basin Coordination Center. While this lights up a fair chunk of the state, it's really for the far northwest corner. Another similar round of convection for far northern and northwest Utah is expected tomorrow, though more isolated than today. Additional Red Flag Warnings are in effect for a combination of breezy winds and low relative humidities creating critical fire weather conditions.

High pressure aloft will begin to build over the Desert Southwest by Thursday. An area of elevated winds at mid-levels will shift northward in response, which is why our Red Flag Warnings for winds and RH are generally shifting northward as we move through the week. There is some possibility that moisture associated with Hurricane Elida will spread into southern Utah on Thursday, bringing a potential for showers/thunderstorms in that area. Rain amounts if any will likely be on the light side, but it will be something to keep an eye on at least.

LONG TERM (After 12z Friday). Long term focus remains the strength of the building ridge of high pressure across much of the western CONUS with hot temperatures and predominately dry conditions for Utah

At the beginning of the long term period, ensembles members have now settled on a solution that keeps the weak/shallow plume of tropical moisture associated with the system of the Baja of California coast suppressed across northern Arizona, southern Nevada before dissipating altogether. Some light moistening in the upper levels (480-450mb) evident by both the ECMWF and GFS across southern and the persistent small dewpoint depression evident in prior upper air soundings from both SLC and DPG, increases confidence to include some mention of PoPs across the the high terrain in southern Utah. All indicators suggest a high based convective mode as the environment continues to support a very dry sub-cloud layer, a shallow elevated moisture profile and low PWAT values of 0.6" or less. Hazards will continue to be the threat for strong downburst winds with erratic surface winds and a few cloud to ground lightning strikes.

Increasing heat risk threat begins to unfold across Utah, mainly across extreme southern Utah and portions along the Wasatch Front heading into the weekend. A strengthening ridge of high pressure will continue to amplify across the Great Basin and settle across Utah. Warming H7 temperatures through Monday, should translate to multiple days of 5 to 10 degree above average high temperatures. Current forecast has Monday the hottest day with temperatures across the SLC and Tooele Valleys approaching 100 degrees with temperatures on Sunday and Tuesday remaining in the upper 90's. Ensemble members have remained in phase with each other showing only slight deviations in the strength of the ridge but the overall theme continues to be a stagnant high pressure center maintaining dominance over the Great Basin, keeping much of the area hot and dry through the long term period. The threat of high based convection across the Wasatch and Uintas will be possible each afternoon with the convection following the diurnal curve each afternoon and evening. Little precipitation is expected with these storms that do develop with gusty winds and lightning continuing to bring an increased fire weather danger.

AVIATION. VFR conditions under mostly clear skies are expected to prevail through the valid TAF period. Convection over the higher terrain south-southwest of the terminal is not expected to impact the terminal area through the balance of the afternoon. North to northwest winds will persist through around 04-05Z, then work around to the southeast by around 06Z.

FIRE WEATHER. An area of high-based moisture extending across northern Nevada and into northwest Utah will bring the threat of dry thunder to a few areas this afternoon and again Wednesday. Additionally, increased moisture creeping into our area Thursday could support thunderstorms over southern Utah. Otherwise, dry conditions will continue for most areas under benign southwest flow aloft. Periods of elevated winds will combine with these dry conditions to bring critical fire weather conditions at times for many areas. In general, an area of elevated winds aloft will transition from southern Utah today to central Utah tomorrow and finally northern Utah Thursday, bringing a northward expansion of Red Flag Warnings as we move through the week.

A warming trend will develop into the weekend as a high pressure cell builds over the Desert Southwest. There are some hints that enhanced moisture could be pulled into this high next week, bringing at least some clouds and potential of shower/thunderstorm activity over the higher terrain.

SLC WATCHES/WARNINGS/ADVISORIES. UT . Red Flag Warning until 9 PM MDT Wednesday for UTZ493>496-498.

Red Flag Warning from noon Wednesday to 9 PM MDT Thursday for UTZ479-482>484.

Red Flag Warning until 9 PM MDT this evening for UTZ478.

Red Flag Warning from noon to 9 PM MDT Wednesday for UTZ488-489- 492.

WY . Red Flag Warning from noon today to 8 PM MDT this evening for WYZ277.

Van Cleave/Woodward/Conger

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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1 day agoSW6CalmE5E4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmS4SW4W4SW10SW9SW9
2 days agoE5E4SE5E4NE8E8CalmN9N9
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Tide / Current Tables for
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Weather Map
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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.
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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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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.