Marine Weather and Tides
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.
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|Sunrise 7:35AM||Sunset 5:02PM||Thursday December 5, 2019 12:16 PM MST (19:16 UTC)||Moonrise 1:58PM||Moonset 12:55AM||Illumination 64%|
7 Day Forecast for Marine Location Near Stansbury Park, UTHourly EDIT Help
Area Discussion for - Salt Lake City, UT  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS65 KSLC 051656 AFDSLC
Area Forecast Discussion National Weather Service Salt Lake City UT 956 AM MST Thu Dec 5 2019
SYNOPSIS. A low pressure system will continue to shift east of the area through midday today. High pressure aloft will follow this storm for the late in the week, with the next storm system impacting the region during the upcoming weekend.
DISCUSSION. Morning satellite and H5 analysis indicate the trough that has been translating east across the area has opened over the last few hours while rapidly shifting over western Colorado. The remnants of an occluded front within the northern periphery of this low has weakened while also shifting downstream, with warming cloud tops and building height trends noted and indicative of rapid stabilization across the local area.
Quite the mixed bag of light precip this morning, with largely snow north of KOGD and across the west deserts, mixed freezing rain and snow across the northern Wasatch Front, and largely rain below 6kft for the central and southern portions. As mentioned, precip has been rapidly waning areawide, with clearing skies across the south where height rises have been most notable.
The 12z KSLC RAOB continues to indicate inversion conditions persisting through roughly H8, with significant moistening of the column due to the latest round of precip. Over the next 24 hours heights will continue to build as a short wave ridge shifts over the area, with H7 temps jumping back towards 0C from roughly -6C where they sit now. Expecting maintenance and even expansion of stratus and largely diurnally driven fog for most valleys/basins (including the KSLC metro area) as this low level cap strengthens. Poor air quality will remain along the Wasatch Front.
Moving forward the near term forecast remains on track from an earlier update several hours ago. No further updates anticipated at this time.
PREVIOUS DISCUSSION. A progressive but weakening mid level trough will move into the region over the weekend. As a result have maintained fairly high PoPs for the northern mountains and adjacent valleys during the upcoming weekend with valley rain/snow and mountain snowfall expected.
Long range models, both deterministic and ensembles, have a handle on the trough sliding through the Great Basin late in the weekend. Differences in exact strength of the front are very evident. One set of guidance wants to keep a more northern track while the other set splits and stretches the trough through northern Mexico. Regardless, northwest flow associated with the cold frontal passage will usher in a cold airmass which should help to scoop out some of the valley inversions.
Initially -6C to -7C at 700mb late Sunday will then continue to cool into the overnight hours Sunday night to near -10C by Monday. This storm system should bring some relief to poor air quality and valley inversion conditions along the Wasatch Front and West Deserts through late Monday. Sharp amplification of high pressure behind this trough will once again mostly likely secure valley inversion conditions across northern Utah as we head into mid-week (with 700mb temperatures back up to -2C).
AVIATION. Light northerly flow will switch to a light southerly flow at the SLC terminal between 02z and 03z. IFR and LIFR conditions will continue over the SLC terminal through ~12z. A slow improvement to MVFR conditions is expected between 14z and 15z, with a 30 percent chance of VFR conditions returning to the terminal by 18z.
SLC WATCHES/WARNINGS/ADVISORIES. UT . None. WY . None.
DISCUSSION/AVIATION . Merrill/Woodward PREVIOUS DISCUSSION . Seaman/Dewey
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
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|Salt Lake City, Salt Lake City International Airport, UT||17 mi||22 min||N 0||2.00 mi||Light Rain Fog/Mist||35°F||34°F||96%||1022.2 hPa|
Link to 5 minute data for KSLC
Wind History from SLC (wind in knots)
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|2 days ago||NW||NW||N||NW||NW||N||NE||Calm||Calm||Calm||N||N||NW||S||N||Calm||Calm||Calm||Calm||N||Calm||NW||N||N |
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Wind Forecast for Salt Lake City, UT (14,3,4,5)(on/off)  Help
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