One common thread in some native legends is that the warm air blows on the ridges to warn or send a message to people. Another story , with Albertan origins, is about a man who rode his horse to church, only to find snowdrifts piled so high, only the steeple stuck out of the snow.
So, he tied his horse to the steeple with the other horses, and used a snow tunnel to get into the church. Upon his return, a few hours later, all the snow has melted, leaving the unfortunate horses dangling from the church steeple. While the winds occur year round November to May , frozen Calgarians tend to appreciate their thawing powers most in the winter months.
While Chinooks can occur on the downward slope of any mountain in the world, including areas in Argentina and the Swiss Alps, in Canada they are most common in southern Alberta.
Once the Chinook winds stopped blowing, the temperature dropped right back to -4 degrees Fahrenheit within 27 minutes. Chinookan peoples include several indigenous groups who live in present-day Oregon and Washington. Even in North America, though, they can be called different things. There are many indigenous tellings of the origins and mythology of the Chinook winds.
Clark, goes like this. One day, a careless hunter caused a huge fire by not extinguishing his campfire. An angry Thunderbird punished the Salish people by sending the cold Northeast Wind to drive the people out of the canyon to Bitterroot Valley. After many winters, Thunderbird took mercy out of loneliness for her daughters and the animals and people who were driven from the valley.
Thunderbird asked the Northeast Wind to leave. The chief of the Salish people who heard the gentle rumbling of weeping Thunderbird asked Coyote if there was a way to warm up their former lands. Bluejay flew west and asked warm and kind Chinook wind to help the Salish return to their former grounds by warming up the valley for new life.
The Foothills of southeastern Wyoming and Colorado regularly experience Chinook winds. Extreme Chinook-related events occurred there in January On January 17 and 24, , Chinook winds in Boulder, Colorado caused tornado-scale damage. An EF1 is a moderate tornado with winds from miles per hour. An EF2 is a significant tornado with winds from miles per hour. There are several legends about the origins of the Chinook winds. In one story, recorded by Ella E.
Clark in Indian Legends of the Northern Rockies , Thunderbird punished the people who lived in her valley after a careless campfire destroyed all life there. She sent the cold Northeast Wind to drive the people from the valley. However, her daughters Crow, Magpie and Bluejay went with the people, and Thunderbird became lonely.
So she asked the Northeast Wind to leave, and invited the Chinook Wind to warm the valley. Life returned, as did the people and Thunderbird's daughters. Thunderbird asked Bluejay what she could give to her to show her gratitude.
It is not right that the considerate people should suffer for the offenses of the careless. So, the Northeast Wind returns to the East Pass each winter to remind us to live a thoughtful life, but he always returns to his home when the Chinook Wind comes back to stay in the spring.
Another story, from Myths and Legends of British North America and recorded by Katharine Berry Judson, involved two brothers, Fox and Hare, and their journey to bring warmer weather to their people who lived in very cold conditions. The brothers traveled south to the land where people lived in sunshine and warmth and they released the Chinook wind from a bag and it flowed to the land of the cold bring warmth and new life to the region.
Chinook winds can also have a devastating effect on vegetation. Soil can lose its moisture and its mass as water and soil are carried away by the high-speed winds, according to Mountain Nature. Trees and other plants may wake up from their winter hibernations early only to become dehydrated if they survive the rapid temperature fluctuations. Although air without even a trace of vapor is not realistic, the diagram shows the temperature changes associated with rising expanding and sinking compressing air.
The bottom diagram shows the role that moisture-laden air plays in the development of Chinooks. With the heat released by water molecules as they become ice crystals, the temperature of the air as it reaches the peak is not nearly as cold.
Then the air is compressed as it flows down slope toward Browning, reaching Chinook-like temperatures. NOTE: The diagram is highly simplified. The mountains between Washington and Montana are much more complex and the elevation of Browning is actually quite a bit higher than that of locations in Central Washington.
Term: latent heat. Chinook Winds in Spearfish, South Dakota.
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