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Oregon rainfall varies widely from region to region. Precipitation in the state varies widely: some western coastal slopes approach 200 inches (5,100 mm) annually, while the driest places, such as the Alvord Desert (in the rain shadow of Steens Mountain) in eastern Oregon, get as little as 5 inches (130 mm).
Laurel Mountain has a hyperhumid maritime climate, on the border between Mediterranean (Csb), oceanic (Cfb) and subpolar oceanic (Cfc/Csc).Rainfall is extremely heavy between October and April, and even in the dry months of July and August fog is very frequent and prevents soils and vegetation from drying out appreciably. [5]
The Coast Range creates a rain shadow effect by forcing moisture laden clouds to rise by expelling moisture. [3] This shields the Willamette Valley and causes a less maritime climate with hotter summers and less precipitation than the Oregon Coast. [4]
The Alvord Desert is a desert located in Harney County, in southeastern Oregon in the Western United States.It is roughly southeast of Steens Mountain.The Alvord Desert is a 12-by-7-mile (19 by 11 km) dry lake bed and averages 7 inches (180 mm) of rain a year.
AccuWeather meteorologists anticipate that locations across Washington, Oregon, Northwest California, northern Idaho and western Montana will pick up anywhere from an additional 1-2 inches of rain ...
The Oregon High Desert is a region of the U.S. state of Oregon located east of the Cascade Range and south of the Blue Mountains, in the central and eastern parts of the state. Divided into a southern region and a northern region, the desert covers most of five Oregon counties and averages 4,000 feet (1,200 m) above sea level.
The Willamette Valley ecoregion is a Level III ecoregion designated by the United States Environmental Protection Agency in the U.S. states of Oregon and Washington.Slightly larger than the Willamette Valley for which it is named, the ecoregion contains fluvial terraces and floodplains of the Willamette River system, scattered hills, buttes, and adjacent foothills.
Köppen climate types in Oregon. Most of Oregon has a generally mild climate, though there is significant variation given the variety of landscapes across the state. [23] The state's western region (west of the Cascade Range) has an oceanic climate, populated by dense evergreen mixed forests. Western Oregon's climate is heavily influenced by ...