PORTLAND -- Thousands were without power in the Portland and Clark County area after a powerful new storm moved into the Portland Metro area Sunday evening, bringing with it gusty winds and heavy rain that continued into Monday morning.

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A 2 a.m. outage at Portland International Airport prompted backup generators to come on. Flight operations were not disrupted but parts of the terminal and parking garages had dim lighting. A spokeswoman said at 5 a.m. that power was being restored

A Wind Advisory was up for the western valley with gusts expected to hit 45 mph until 7 a.m. Monday. A Flood Watch is also in effect through Monday morning for most of Northwest Oregon and the coastal basins in southwest Washington, according to the National Weather Service.

Some area river basins were flooding and landslides would likely continue, according to KGW Meteorologist Rod Hill. Nearly an inch of rain fell Saturday in Portland with almost an inch-and-a-half expected to dump on the Metro area Sunday.

On Saturday evening, a driver lost control and flipped his car trying to avoid a landslide on Highway 30 in Linnton near the St. Johns Bridge.

High winds were blowing on the Oregon coast with peak gusts exceeding 60 mph. Highway 26 was closed about 3 miles east of Highway 101 in Clatsop County due to downed trees and power lines, according to Oregon State Police. Tents set up for next week's Newport Seafood & Wine Festival were blow over Saturday by gusts reported to be close to 80 mph.

Saturday's severe weather knocked out power to thousands in Washington, Marion and Clackamas County.

Crews were cleaning up a large rock slide that closed eastbound lanes of Interstate 84 through the weekend. On Friday night, eastbound lanes of the interstate were opened up between Troutdale and Cascades Locks, but I-84 east of Cascade Locks remained closed.

The wave of rain expected to hit late Sunday will likely affect the Monday morning commute, making for nasty driving conditions around Portland and the Interstate 5 corridor.

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Area rivers are already running high from rain and snow melt over the last week, and are expected to rise as the system moves through.

Specifically, the rivers of concern are the Pudding, Siuslaw, Marys, Luckiamute, Mohawk and the Willamette River near Harrisburg.

The Saturday storm system should move through quickly, according to NWSforecast models, but will bring another 2 inches of rain to the Coast Range and up to another inch to the valley.

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Landslides and debris flows are possible during the flood watch.

People, structures and roads located below steep slopes, in canyons and near the mouths of canyons may be at serious risk from rapidly moving landslides, the alert warns.

More: State issues landslide warnings for the weekend

Landslides have already blocked traffic on Interstate 84 near Hood River and on Northwest Cornell Road in Portland.

People living in areas prone to flooding should be prepared to take action.

Related:Rock slide blocks I-84 near Hood River

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