A powerful storm that hammered the coast of Massachusetts and caused flooding in some York County communities is moving slowly and could cause more minor flooding during high tide Friday night.

The National Weather Service in Gray said the storm will be pulling out to sea and the tides are not running particularly high, but waves near shore will still be about 20 feet high. High tide is at 8:30 p.m.

Winter Storm Saturn left 8.2 inches of snow in Cape Neddick and York and spotters in West Acton reported 13 inches by Friday afternoon, according to the National Weather Service in Gray. Parts of New Hampshire got as much as a foot of new snow.

Cumberland County saw much smaller amounts with 2 inches reported in Gorham and Windham and less in other communities, according to the weather service.

Coastal areas of York County dealt with flooding Friday morning as high waves generated by the storm pounded the shore.

Waves were crashing over the seawall in Kennebunk and casting debris onto roads in the Camp Ellis area of Saco, said York County Emergency Management’s interim director, David Francoeur.

“It’s not an astronomical high tide, (and) it’s the waves,” Francoeur said. “There’s some big waves, 20- to 25-foot waves, and they’re rolling onto shore.”

Francoeur said he visited coastal areas in Saco Thursday night.

“It was some of the highest water I’ve seen in a few years,” he said.

Francoeur said he expected the flooding would abate in the next few hours.

The National Weather Service posted a winter weather advisory early Friday morning because of what it described as a large and strong low-pressure system off the East Coast, bringing between 3 and 8 inches of snow depending on when it changes over to rain.

Speeds on the Maine Turnpike remained lowered Friday morning to 45 mph between Kittery and Saco because of snow.