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Weekend storm threatens flooding in Wash., Oregon

A Pacific storm sweeping through the Northwest has brought heavy rain to Washington state and Oregon, causing multiple landslides that shut down roads across the region.

Oregon transportation officials on Sunday closed U.S. Highway 20, also called Santiam Highway, near Cascadia in central Oregon after a landslide brought about 150 cubic yards of mud, rock and debris onto the road.

KOIN-TV reports that a section of a Portland road was partially under water Saturday, while a landslide closed the westbound lanes of Highway 26 in the mountains west of Hillsboro.

Landslides also closed sections of three state highways in southwest Washington.

The National Weather Service says the rain likely would cause flooding through Monday, as many waterways already were rising from snowmelt due to recent warmer temperatures.