A fast-moving storm system brought several inches of snow to parts of the Northeast and Mid-Atlantic regions for the second time this week, leaving two inches of snow in Central Park but double-digit accumulations in other areas, such as parts of Long Island.

Zack Taylor, a meteorologist with the National Weather Service in College Park, Md., described the overnight system, which over-performed in some places, as having a “narrow stripe” that brought eight to 12 inches of snow across portions of central Ohio through central Pennsylvania, north-central New Jersey and clipped the very extreme southern portions of New York.

Nearly 10 inches of snow accumulated in Coney Island, while parts of Queens recorded up to six inches, according to the National Weather Service. Two inches of snow fell in Central Park.

Snow totals so far have ranged from six to 10 inches across southwestern Long Island, southern portions of northeastern New Jersey and parts of Staten Island, forecasters said.

The National Weather Service noted on social media that it received a report of 5.2 inches of snow that fell in just one hour in Hellerton, Pa.

That was the greatest reported snowfall rate it had received so far, stemming from a heavy band of snow that developed from Berks County in Pennsylvania into New Jersey, the Weather Service said, adding: “Numerous reports of 2” to 4” in one hour. Very impressive!”

While the bulk of the storm was finished, light snow was expected to continue in southeastern New York throughout the day before moving east by early Saturday evening, forecasters said.

“The snow is over, but we are keeping an eye on, kind of some scattered snow showers that will develop later today and through tonight, primarily affecting more western New York and portions of Pennsylvania,” Mr. Taylor said.

Philadelphia woke up to about three inches of snow on Saturday, according to officials, while Allentown, Pa., received about a foot of snow.

In Baltimore, snow totals were one to three inches, Mr. Taylor said, noting that Washington received just above a trace. Some of the higher terrain areas of West Virginia recorded six to 12 inches of snow, he said.

The overnight storm was the second one to bring snow to some Northeast cities this week.

A storm on Tuesday dropped 3.2 inches in Central Park, several more inches in the suburbs and more than eight inches of snow in parts of Maryland, according to the Weather Service.

Ahead of the expected weekend snowfall, the New York City Emergency Management Department issued a citywide travel advisory, warning that slippery roadways and reduced visibility were possible through early Saturday.

Snow has been something of a rarity in New York City over the past couple of years. After 701 days without meaningful accumulation, a total of 1.7 inches fell in Central Park on Jan. 15 and Jan. 16.