Major factors determining Washington's climate include the large semi-permanent high pressure and low pressure systems of the north Pacific Ocean, the continental air masses of North America, and the Olympic and Cascade mountains. In the spring and summer, a high-pressure anticyclone system dominates the north Pacific Ocean, causing air to spiral out in a clockwise fas… WebThe Washington cities of Spokane, Yakima and Pasco, and the Oregon city of Pendleton, lie on the Columbia Plateau. The Columbia Plateau is a geologic and geographic region that lies across parts of the U.S. states of Washington, Oregon, and Idaho. [1] It is a wide flood basalt plateau between the Cascade Range and the Rocky Mountains, cut ...

USGS: The Channeled Scablands of Eastern Washington (Geologic …

WebThe Geography of Washington Total Size: 66,544 sq. miles (source: 2003 Census) Geographical Low Point: Pacific Ocean at Sea Level (source: U.S. Geological Survey) Geographical High Point: Mt. Rainier at 14,411 feet, … WebWashington’s distinct geographic regions reflect an exciting geologic history. David Tucker in Geology Underfoot in Western Washington describes Western Washington … care of secretary order

The National Geologic Map Database (NGMDB) Active - USGS

WebAlong its craggy Pacific coastline, across its alpine crest, and into its eastern scablands, Washington State offers unparalleled scenic landscapes. The Washington Geological … WebThe Missoula floods (also known as the Spokane floods or the Bretz floods or Bretz's floods) were cataclysmic glacial lake outburst floods that swept periodically across eastern Washington and down the Columbia River Gorge at the end of the last ice age.These floods were the result of periodic sudden ruptures of the ice dam on the Clark Fork River … care of schefflera houseplant