CONCORD, N.H. — The National Weather Service says significant snowfall could fall across southwest Maine and southern New Hampshire during the storm expected Saturday.

Winter storm watches are in effect for those areas. There’s still some uncertainty how far north the snowfall will move.

The snow is expected to be heavy and wet, with some areas of southern New Hampshire getting up to a foot or more, with lesser amounts farther north.

In New Hampshire, the state police advised drivers to limit road travel from Saturday evening into Sunday morning to allow Department of Transportation crews to clean and treat the roads. The state Homeland Security and Emergency Management Department urged building owners to ensure that roof drains are clear and to remove snow as soon as possible. Homeowners should use snow rakes or call a contractor.

A hazardous weather outlook is in effect for much of Vermont, with up to 7 inches of snow expected.

The weather service says the snow will linger into Sunday evening before the storm pulls away.