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The state of Washington is the setting for most of the Twilight series. The state is located in the Pacific Northwest United States and borders Canada. Prominent locations in Washington state from the books include:

Geography[]

Washington is the northwestern-most state of the contiguous United States. It is part of a region known as the Pacific Northwest, a term which always includes at least Washington and Oregon and may or may not include Idaho, western Montana, northern California, and part or all of British Columbia, Alaska, and the Yukon Territory, depending on the speaker or writer's intent.

The high mountains of the Cascade Range run north-south, bisecting the state. Western Washington, west of the Cascades, has a mostly marine west coast climate with relatively mild temperatures, wet winters, and dry summers. In contrast, Eastern Washington, east of the Cascades, has a relatively dry climate with large areas of semiarid steppe and a few truly arid deserts lying in the rain shadow of the Cascades; the Hanford reservation receives an average annual precipitation of between six and seven inches (178 mm). Farther east, the climate becomes less arid. The Palouse region of southeast Washington was grassland that has been mostly converted into farmland. Other parts of eastern Washington are forested and mountainous.

The Cascade Range contains several volcanoes, which reach altitudes significantly higher than the rest of the mountains. From the north to the south these volcanoes are Mount Baker, Glacier Peak, Mount Rainier, Mount St. Helens, and Mount Adams. Mount St. Helens is currently the only Washington volcano that is actively erupting; however, all of them are considered active volcanoes.

Washington is a land of contrasts. The deep forests of the Olympic Peninsula, such as the Hoh Rain Forest, are among the only temperate rain forests in the continental United States, but the semi-desert east of the Cascade Range has few trees. Mount Rainier, the highest mountain in the state, is covered with more glacial ice than any other peak in the lower 48 states.

Climate[]

Washington's climate varies greatly from west to east. An oceanic climate (also called "west coast marine climate") predominates in western Washington, and a much drier semi-arid climate prevails east of the Cascade Range. 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 fashion. For Washington this means prevailing winds from the northwest bringing relatively cool air and a predictably dry season. In the autumn and winter, a low pressure cyclone system takes over in the north Pacific Ocean, with air spiraling inward in a counter-clockwise fashion. This causes Washington's prevailing winds to come from the southwest, bringing relatively warm and moist air masses and a predictably wet season.

References[]


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