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Köppen climate types of Oregon, using 1991-2020 climate normals. Trewartha climate types of Oregon. According to the Köppen climate classification, most of Western Oregon has a warm-summer Mediterranean climate (or Csb type), which features warm, dry summers, and wet winters with frequent overcast and cloudy skies.
41-59000. GNIS feature ID. 2411471 [6] Website. www .portland .gov. Portland ( / ˈpɔːrtlənd / PORT-lənd) is the most populous city in the U.S. state of Oregon, located in the Pacific Northwest region. Situated in the northwestern area of the state at the confluence of the Willamette and Columbia rivers, it is the county seat of Multnomah ...
The Pacific Northwest ( PNW ), sometimes referred to as Cascadia, is a geographic region in western North America bounded by its coastal waters of the Pacific Ocean to the west and, loosely, by the Rocky Mountains to the east. Though no official boundary exists, the most common conception includes the U.S. states of Oregon, Washington, northern ...
After nearly two months of drier than normal weather, a long stretch of “Oregon sunshine” is expected to return next week. Oregon weather turns wet and warm, as long-term rainfall projected ...
An aerial view of the Willamette River's flood. The Willamette Valley flood of 1996 was part of a larger series of floods in the Pacific Northwest of the United States which took place between late January and mid-February 1996. It was Oregon 's largest flood event in terms of fatalities and monetary damage during the 1990s.
Willamette River. Willamette Valley basin. The Willamette Valley ( / wɪˈlæmɪt / ⓘ wil-AM-it) is a 150-mile (240 km) long valley in Oregon, in the Pacific Northwest region of the United States. The Willamette River flows the entire length of the valley and is surrounded by mountains on three sides: the Cascade Range to the east, the Oregon ...
Date. 20 days. December 18, 1964. ( 1964-12-18) – January 7, 1965. ( 1965-01-07) Location. California, Oregon, and Washington states. The Christmas flood of 1964 was a major flood in the United States' Pacific Northwest and some of Northern California between December 18, 1964, and January 7, 1965, spanning the Christmas holiday.
The Pacific temperate rain forests are characterized by a high amount of rainfall, in some areas more than 300 cm (10 ft) per year and moderate temperatures in both the summer and winter months (10–24 °C or 50–75 °F). This ecoregion is a subregion of the Cascadia bioregion . These rainforests occur in a number of ecoregions, which vary in ...
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