Weather Alert in Utah
Winter Weather Advisory issued February 10 at 2:49PM MST until February 12 at 11:00AM MST by NWS Salt Lake City UT
AREAS AFFECTED: Wasatch Mountains I-80 North; Wasatch Mountains South of I-80; Western Uinta Mountains
DESCRIPTION: * WHAT...Snow expected. Total snow accumulations of 6 to 12 inches, primarily above 7500 feet. Locally up to 15 inches in the upper Cottonwoods. * WHERE...The Wasatch Mountains, and Western Uinta Mountains. * WHEN...From 11 PM this evening to 11 AM MST Thursday. * IMPACTS...Winter driving conditions are expected. * ADDITIONAL DETAILS...Intermittent heavy snow rates will occur between 3 AM and 4 PM Wednesday, especially for the upper Cottonwoods.
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 Cirrus Clouds?
Home - Education - Cloud Types - Cirrus Clouds
Next Topic: Condensation
Cirrus clouds are high-level clouds that occur above 20,000 feet
and are composed mainly of ice crystals.
They are thin and wispy in appearance.
What do they indicate?
They are often the first sign of an approaching storm.
Next Topic: Condensation
Weather Topic: What are Contrails?
Home - Education - Cloud Types - Contrails
Next Topic: Cumulonimbus Clouds
A contrail is an artificial cloud, created by the passing of an
aircraft.
Contrails form because water vapor in the exhaust of aircraft engines is suspended
in the air under certain temperatures and humidity conditions. These contrails
are called exhaust contrails.
Another type of contrail can form due to a temporary reduction in air pressure
moving over the plane's surface, causing condensation.
These are called aerodynamic contrails.
When you can see your breath on a cold day, it is also because of condensation.
The reason contrails last longer than the condensation from your breath is
because the water in contrails freezes into ice particles.
Next Topic: Cumulonimbus Clouds
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