SnowBrains Forecast: 10-20″ of Snow For Utah’s Mountains Through Wednesday; More Later This Week

Eric McNamee | | WeatherWeather
NBM Snowfall Map Through 5 pm Wednesday. Source: maps.weatherbell.com

Forecast By SnowBrains Chief Meteorologist – Eric McNamee

 11:15 PM MST, 12/13/2021

Forecast Summary:

A shortwave trough with a strong cold front will move through Utah Tuesday night/Wednesday morning and bring 10-20″ of snow to most of Utah’s mountains.

Snow will start Tuesday afternoon and continue into Wednesday morning.

Showers will taper off throughout the day Wednesday as the trough moves east.

Conditions will temporarily dry out Wednesday night before another system moves through Thursday/Friday.

Resorts that will see the most snow are Alta, Snowbird, Brighton, Solitude, Deer Valley, Park City, Canyons, Snowbasin, Powder Mountain, and Brian Head. 

Short-Term Forecast:

Tuesday-Thursday:

A shortwave trough with a strong cold front will move through Utah Tuesday night/Wednesday morning and bring 10-20″ of snow to most of Utah’s mountains.

Snow will get going Tuesday afternoon and fill in Tuesday evening as a cold front moves through the state.

A convective line of snow showers will allow for snowfall rates to get up to 2″ per hour in some mountain locations Tuesday night.

Snow will continue into Wednesday morning behind the front under moist and unstable northwest flow.

The mountains of southern Utah will see more snow than northern Utah, except for the Cottonwoods. 

By Wednesday evening most snow showers will end as the trough moves off to the east.

Winter Storm Warnings have been issued by the National Weather Service in anticipation of this storm.

By Thursday another system moves into the state and brings another round of snow to the mountains.

NBM Snowfall Map Through 5 pm Wednesday. Source: maps.weatherbell.com
NWS Advisory Map. Source: maps.weatherbell.com

Long-Term Forecast:

Friday-Sunday:

Snow will continue into Friday and taper off Friday night.

Snowfall rates will not be heavy with this system but will last over a two day period and could bring some decent totals to the mountains. 

Conditions will then dry out heading into the weekend.

Extended Forecast:

Sunday and Beyond:

Global ensembles are indicating above-average precipitation and near to below-average temperature across Utah in the extended.

6-10 Day Precipitation Outlook. Source: https://www.cpc.ncep.noaa.gov/
6-10 Day Temperature Outlook. Source: https://www.cpc.ncep.noaa.gov/
8-14 Day Precipitation Outlook. Source: https://www.cpc.ncep.noaa.gov/
8-14 Day Temperature Outlook. Source: https://www.cpc.ncep.noaa.gov/

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