Tuesday, January28, 2020
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Marine Weather and Tides
Ogden, 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 7:41AMSunset 5:40PM Tuesday January 28, 2020 6:22 PM MST (01:22 UTC) Moonrise 10:02AMMoonset 9:29PM Illumination 16% Phase: Waxing Crescent; Moon at 4 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 Ogden, UT
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Area Discussion for - Salt Lake City, UT
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FXUS65 KSLC 282258 AFDSLC

Area Forecast Discussion National Weather Service Salt Lake City UT 358 PM MST Tue Jan 28 2020

SYNOPSIS. An upper level trough will pass through the Great Basin tonight through Wednesday. High pressure will build back across the area late into the week, and remain through the upcoming weekend.

SHORT TERM (THROUGH 12Z FRIDAY). Warm advection continues across northern Utah this afternoon, with the flow backing to more westerly ahead of the approaching trough which is currently moving across the Great Basin. Some light precipitation has developed across northern Utah in association with the warm advection. Precipitation will fill in more tonight with the approach of the trough.

Per water vapor imagery, the trough is already splitting, with a vort max diving south-southeast through California. Northern Utah will see the airmass start to destabilize this evening with cooling temperatures aloft leading to steepening lapse rates. Meanwhile, the best 700mb cold advection will occur over central Utah later tonight into tomorrow. By mid to late morning and into the early afternoon hours, the cold pool aloft will be overhead which will maintain showery precipitation over the area, but northerly flow aloft will focus the best precipitation along north-facing slopes across central and southwest Utah. As such, precipitation will be spread out, but no one area is expected to see particularly large amounts of precipitation since the forcing is not strongly focused.

Valley rain or rain/snow will transition to mostly snow tonight. The bulk of the snow along the Wasatch Front can be expected overnight, and across central and southwest Utah tomorrow morning into the early afternoon hours. Some minor accumulations could bring occasional impacts to the morning commute, but these impacts are expected to remain relatively minor. As such, have decided against any winter weather highlights at this time.

The trough will continue to amplify before exiting the area late tomorrow afternoon. With the flow turning northerly and increasing, some gusty canyon winds can be expected across Washington County tomorrow afternoon and evening. However, these winds look to remain below advisory criteria.

A trailing shortwave trough will drop in along the northerlies and graze northeast Utah and southwest Wyoming on Thursday. This will bring a reinforcing shot of cold air to the area, with a chance for some additional light snow across northern Utah and southwest Wyoming. Thereafter, high pressure will build into the area heading into the end of the week, although this will bring stable conditions to the area with inversion conditions developing.

LONG TERM (After 12z Friday). Model guidance continues to be quite persistent with the long term forecast in timing and evolution among deterministic and ensemble guidance, therefore confidence continues to build. A ridge in place to end the week will bring about some warm advection under northwest flow. Heading into the weekend, eastern valleys may be susceptible to inversion conditions locking in the cold air. Have continued going below guidance with some colder valley locations into the weekend.

Analyzing the ensemble suite of guidance continues to advertise a deepening and cold trough to dig south Monday. Again, persistent model guidance gives higher confidence to forecast higher probabilities for precip in the farther extended forecast. Timing will continue to be of concern whether the change over from rain to snow takes place during an overnight or during a morning commute time. Right now a very well organized baroclinic zone at 700mb depicts the frontal passage sometime Sunday evening with 700mb temperatures cooling some 9-11C by Monday morning as the flow shifts to the northwest. This will translate to daytime temperatures Monday struggling to warm and maxing out some 10-15F cooler compared to Sunday. The best energy and frontogenesis is a bit messy, so those details will continue to be monitored as well as how much precipitation is possible.

AVIATION. Fluctuating CIGS between 6000ft and 8000ft AGL will continue through 00z. MVFR CIGs with light rain/snow will begin around 01z with a transition to all snow expected by 03z. There is a 20% chance for some IFR/LIFR snowfall between 03z and 09z. Southerly flow will transition to a northerly flow by 09z. Snowfall accumulations will be ~1".

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

Cheng/Dewey/Woodward

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
Ogden-Hinckley Airport, UT1 mi30 minS 510.00 miOvercast42°F28°F58%1018.6 hPa
Hill Air Force Base, UT6 mi85 minS 710.00 miOvercast40°F28°F64%1019.3 hPa

Link to 5 minute data for KOGD

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Last 24hrSE5S5S5S5S6S6S6S6CalmS4E6S4S5S6S6SE7S4S10S84SE6SE7SE5S5
1 day agoNW3SE7SW8SW3SW4E4NE4E3S7S3S6S7S5CalmNW3NE3SW3SW6SW6SW5W6W5W4SW4
2 days agoNW4CalmN4CalmN3CalmCalmW4CalmCalmE3CalmNE3CalmE5NW4CalmCalmNW4E4W6N5NW8N4

Tide / Current Tables for
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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.
Link to Loop

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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.