The term Chinook refers to a type of WIND and a species of SALMON. The Chinook WIND is a warm, dry WIND that originates in the Rocky Mountains and blows eastward across the Great Plains. It is known for its strong gusts and can cause drastic temperature changes. The Chinook SALMON is a species of Pacific SALMON that is native to the North American west coast. It is an important food source for many coastal communities and is also a popular sport fish.