The Blue Mountains are a mountain range in the western United States, located largely in northeastern Oregon and stretching into southeastern Washington.The range has an area of 4,060 square miles (10,500 km 2), stretching east and southeast of Pendleton, Oregon, to the Snake River along the Oregon-Idaho border.
-A +A. The Blue Mountains Province is located in the southeast corner of the state, south of the Snake River. The majority of the Blue Mountains lie within Oregon. Within the rain shadow of the Cascade Range, its arid climate supports a unique ecosystem that differs greatly from mountain ranges to the west. Most of the Blue Mountains are underlain by the Columbia River Basalt Group (CRB) lava flows, primarily the Grande Ronde Basalt, which erupted around 16.5 million years ago. Coal and diatomite interbeds within the basalt flows are found within the lower-lying basins. The Blue Mountains are a mountain range in the western United States, located largely in northeastern Oregon and stretching into southeastern Washington. The range has an area of 4,060 square miles (10,500 km 2), stretching east and southeast of Pendleton, Oregon, to the Snake River along the Oregon-Idaho border. U.S. Route 26 crosses the southern portion of the range, reaching a summit of 5,098 feet (1,554 m) at Blue Mountain Pass. Much of the range is included in the Malheur National Forest, Umatilla National Forest, and Wallowa–Whitman National Forest. Blue Mountains. The Blue Mountains is a unique world heritage area and also one of the most bush fire prone areas in the World. The population across the district is 75,000 people who live in, or in the vicinity of 27 towns and villages across th Days 0-3 Blue Mountain (Washington) Weather Summary: Moderate rain (total 18mm), heaviest on Mon night. Mild temperatures (max 8°C on Mon morning, min 1°C on Sat night). Winds decreasing (strong winds from the W on Sat night, calm by Sun morning). Days 3-6 Blue Mountain (Washington) Weather Summary: Mostly dry. This table gives the weather forecast for Blue Mountain (Washington) at the specific elevation of 1831 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of Blue Mountain (Washington) The Blue Mountains ecoregion is a Level III ecoregion designated by the United States Environmental Protection Agency (EPA) in the Pacific Northwest, mainly in the state of Oregon, with small areas over the state border in Idaho and southeastern Washington. The second largest of the Blue Mountains subregions, the Continental Zone Foothills is located in the easternmost part of the region, covering 3,715 square miles (9,622 km 2) in Oregon and 591 square miles (1,531 km 2) in Idaho. The Blue Mountains cover seven counties in Oregon and Washington; they are Union, Umatilla, Grant, Baker, and Wallowa counties in Oregon, and Walla Walla, Columbia and Garfield counties in Washington. They are home to the world's largest organism and fungal mycelial mat, the Armillaria solidipes. U.S. Route 26 crosses the southern portion of the range, reaching a summit of 5,098 feet (1,554 m) at Blue Mountain Pass. Much of the range is included in the Malheur National Forest, Umatilla National Forest, and Wallowa–Whitman National Forest. The Blue Mountain is the oldest existing locomotive in the State of Washington. The narrow gauge engine was built in 1877 for the pioneer Walla Walla & Columbia River Railroad and served in the Columbia Basin for nearly 30 years until it was displaced by standard gauge locomotives and finished it's career in Alaska. By the time the Blue Mountain arrived in Wallula, it already had a new owner, for on February 18, 1878, Dr. Baker had sold seven eights of his railroad stock to the Oregon Steam Navigation Company (OSN). The OSN controlled transportation on the Columbia River, and purchase of the railroad strengthened it's monopoly.
http://www.dnr.wa.gov/programs-and-services/geology/explore-popular-geology/geologic-provinces-washington/blue-mountains https://en.wikipedia.org/wiki/Blue_Mountains_(Pacific_Northwest) http://www.rfs.nsw.gov.au/about-us/our-districts/blue-mountains http://www.mountain-forecast.com/peaks/Blue-Mountain/forecasts/1831 https://en.wikipedia.org/wiki/Blue_Mountains_(ecoregion) https://en.wikipedia.org/wiki/Blue_Mountains_(Pacific_Northwest) http://wsrhs.org/bmhis.htm
why are the blue mountains of washington blue