Keep your eyes on the sky.

The National Weather Service said early Sunday that snow is headed to Portland with as much as 6 inches expected in the hills. The rest of the city could get 1 to 4 inches.

Snow could start in the morning, but is expected to hold off until the evening.

But a day after the service said that Portland would either get a foot or nothing, the forecasters said they still have low confidence in their projections. “There remains a lot of uncertainty as to how this event will unfold,” the service said, “and rapid changes in the forecast are possible.”

The National Weather Service upgraded its winter storm watch to a winter storm advisory, meaning that snow will make it hard to travel.

Here are projected snowfall totals:

These are MOST LIKELY snow amounts. Still a lot of variability, but area of greatest lowland snow appears to be Vernonia to Kelso/Longview. pic.twitter.com/FY4G8Ysndm

— NWS Portland (@NWSPortland) February 5, 2017

In the Coast Range, where forecasters say as much as 16 inches could fall, snow was already falling early Sunday morning.

Snow sticking to the roads down to 650 feet on US30 at Bradley Wayside. pic.twitter.com/EffrYSu5We

— NWS Portland (@NWSPortland) February 5, 2017

Read the National Weather Service’s complete forecast here.

— Rob Davis

rdavis@oregonian.com

503.294.7657

@robwdavis

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