chinook wind


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Related to chinook wind: Santa Ana wind, Foehn wind

chinook wind

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A warm, dry wind that blows down the eastern slopes of the Rocky Mountains of the United States. It is akin to a Foehn wind and approaches the Rocky Mountains from the Pacific Ocean. As it climbs the mountain, the air begins to expand and cool. Some of the moisture in the air condenses and falls to the ground as rain or snow. As the precipitation falls, great amounts of stored heat are released. The air that descends down the eastern slope of the mountain is drier and warmer, warming at a rate that is twice the cooling rate and resulting in rapid melting of the snow. White wispy clouds appear parallel to the mountain ranges. The strong westerly or southwesterly winds can attain speeds as high as 100 mph (160 kmph).
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Chinook winds are most common in a region called the Livingston Box, a broad zone extending from north central Montana to southeast Wyoming, centered near Livingston, Montana.
The most dramatic rapid temperature rises in North America occur in the interior West, where warm so-called Chinook winds - moist weather patterns originating off the Pacific Coast - cool as they climb the western slopes of the Rockies, then rapidly warm as they drop down the eastern side of the mountains.
"We have the largest convention center on the Oregon Coast and a lot of people didn't think we even existed," says Brenda Hovis-Fisher, director of marketing for Chinook Winds Casino and Convention Center in Lincoln City.
The production is the result of a collaboration by Sadie Buck, director of Aboriginal Women's Voices, and choreographer Alejandro Ronceria, director of the Banff Centre's Chinook Winds Aboriginal Dance Program.
This shrub can stand up to chinook winds, shade, and high elevations.
In addition to beach travelers, Otis sees traffic from Chinook Winds Casino in Lincoln City and Spirit Mountain Casino in Grand Ronde.
The temperature of 60 or 70 degrees sometimes recorded in March on the eastern flank of the Rocky Mountains, and there too at elevations several thousand feet above the sea, are not always due to Chinook winds they are often rather the first warm breath of genuine spring wafted over the mountains from the genial Pacific.
Warm Chinook winds from the Pacific Ocean, and cold Arctic air from the North, can bring sudden changes in temperature.
A fondly named "Chinook aspen", native to a nearby mountain pass, is pruned to lean in the direction of the prevailing Chinook winds that sweep through the yard.
The summer program at the Banff Centre for the Arts for Aboriginal people is a dance project called Chinook Winds. This will be the second time this project has occurred and will incorporate an emerging choreographer's component for the first time.
We don't get the Black Chinook winds we used to get in winter.