Weather Alert in Utah
Winter Weather Advisory issued March 31 at 10:30PM MDT until April 1 at 12:00PM MDT by NWS Salt Lake City UT
AREAS AFFECTED: Wasatch Mountains South of I-80; Western Uinta Mountains; Wasatch Plateau/Book Cliffs; Central Mountains; Southern Mountains
DESCRIPTION: * WHAT...Snow, mainly above 7500 feet across the northern Utah mountains to above 8500 feet in the southern Utah mountains. Snow accumulations of 4 to 8 inches in the northern mountains, with upwards of 10 to 14 inches in the upper Cottonwoods. Snow accumulations of 8 to 14 inches in the central and southern mountains, with upwards of 18 inches in the Tushar Mountains and Brian Head area. * WHERE...Central Mountains, Wasatch Plateau/Book Cliffs, Wasatch Mountains South of I-80, Western Uinta Mountains, and Southern Mountains. * WHEN...Until noon MDT Wednesday. * IMPACTS...Winter driving conditions are expected for elevations above 7,500ft in the northern mountains, 8,000ft in the central mountains, and 8,500ft in the southern mountains. * ADDITIONAL DETAILS...Snow levels will be starting out around 9000 to 9500 feet at the onset of heavier precipitation and will gradually lower through the overnight hours. The lowest snow levels are expected by early to mid-morning on Wednesday as moisture begins to taper off.
INSTRUCTION: Slow down and use caution while traveling. For winter road conditions from the Utah Department of Transportation, visit http://www.udottraffic.utah.gov. For graphical depictions of the snowfall forecast, including Official NWS Forecast, High End Amount, and Low End Amount, visit weather.gov/slc/winter.
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Weather Topic: What are Shelf Clouds?
Home - Education - Cloud Types - Shelf Clouds
Next Topic: Sleet
A shelf cloud is similar to a wall cloud, but forms at the front
of a storm cloud, instead of at the rear, where wall clouds form.
A shelf cloud is caused by a series of events set into motion by the advancing
storm; first, cool air settles along the ground where precipitation has just fallen.
As the cool air is brought in, the warmer air is displaced, and rises above it,
because it is less dense. When the warmer air reaches the bottom of the storm cloud,
it begins to cool again, and the resulting condensation is a visible shelf cloud.
Next Topic: Sleet
Weather Topic: What is Snow?
Home - Education - Precipitation - Snow
Next Topic: Stratocumulus Clouds
Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake,
has unique characteristics, but all of them grow in a hexagonal structure.
Snowfall can last for sustained periods of time and result in significant buildup
of snow on the ground.
On the earth's surface, snow starts out light and powdery, but as it begins to melt
it tends to become more granular, producing small bits of ice which have the consistency of
sand. After several cycles of melting and freezing, snow can become very dense
and ice-like, commonly known as snow pack.
Next Topic: Stratocumulus Clouds
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