PORTLAND, Ore. – A strong cold front is still on track to hit the Pacific Northwest, bringing freezing temperatures and plenty of snow for the mountains, the National Weather Service said.

Snow levels will likely stay above the Cascade passes through Sunday evening, the weather service said. Rain is expected to increase on Sunday night and into Monday.

By Monday morning, snow levels will begin to rapidly fall as the front moves through the region, the weather service said.

The mountain passes could see 4-8 inches of snow by Monday night. Snow levels are expected to be near the Willamette Valley floor as arctic air moves into Southwest Washington and Northwest Oregon.

“If there is lingering moisture we could see a dusting of snow at the most on the valley floor by late Monday night into Tuesday morning,” said KATU Meteorologist Mary Loos.

The weather service is warning people to be prepared for winter driving conditions over the Cascade passes on Monday.

Tuesday night, colder air is expected to arrive and remain through the rest of the week, according to the weather service.

The forecast calls for very cold temperatures beginning Tuesday with lows in the 20s.

East winds will develop in the Columbia River Gorge and higher elevations, pushing wind chills near or below zero degrees for those areas.

“Wind chills in the single digits are likely for the Portland Metro Area by midweek,” the weather service said in a statement on Saturday.

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