Weather Alert in Wyoming
Winter Storm Warning issued April 2 at 2:17AM MDT until April 3 at 6:00PM MDT by NWS Riverton WY
AREAS AFFECTED: Yellowstone National Park; Teton and Gros Ventre Mountains
DESCRIPTION: * WHAT...Heavy snow. Total snow accumulations between 12 and 18 inches and up to 24 inches along the western slopes of the Tetons. 6 to 10 inches of total snow accumulation is expected in Yellowstone National Park, with amounts up to 18 inches along higher elevations across southern portions of the park. The Mammoth area will see 1 to 3 inches. Winds could gust as high as 45 mph. * WHERE...Teton and Gros Ventre Mountains and Yellowstone National Park. * WHEN...Until 6 PM MDT Friday. * IMPACTS...Travel could be very difficult, including over Teton Pass and Togwotee Pass.
INSTRUCTION: If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info .
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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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