A winter storm is expected to move into the Northeast beginning Monday and into Tuesday, forecasters said, bringing up to a foot of snow to some areas from central Pennsylvania to the Catskills and Hudson Valley in New York.
As of Saturday, the storm was in the Southern Plains in the southwestern United States, but it will move east and then northeast over the next two days.
The heaviest snowfall is expected from northern Pennsylvania, northwestern New Jersey and southern New York into southern New England, where a foot or more of snow could fall inland, said Bill Decker, senior meteorologist with AquaWeather.
In these areas, snowfall rates can exceed an inch per hour, he said.
The heaviest snow will be north of New York City, said Frank Pereira, a meteorologist with the National Weather Service's Weather Forecast Center.
Saturday's forecast calls for up to a foot of snow from central Pennsylvania through the Catskills and Hudson Valley in New York, then into southern New England, Connecticut and Massachusetts and the greater Boston area.
Rain will begin Monday night in New York City and turn to snow Tuesday morning, said David Stark, a meteorologist with the Weather Service's office in New York. He said he doesn't expect much snow, but it's too early to tell.
The rain-snow mix is dangerous for drivers, Mr. Tigger said.
“Rain before snow makes it more difficult for municipalities to prepare roads for winter weather because any pretreatment can be washed away before temperatures drop below freezing and snow begins to accumulate,” he noted.
Drivers should expect tough travel Tuesday in eastern Pennsylvania through the New York City area, the Hudson Valley and southern New England, where heavy snow will reduce visibility, Mr. Djer said.
During high tide early Tuesday morning, “there could be pockets of minor, maybe moderate, coastal flooding along the East Coast,” said Rob McNea, a meteorologist at the weather service's office in Boston. “People should be aware of that even if they don't expect much snow.”
Weather Forecast Center's Mr. Pereira said the storm is “moving very fast.”
“As we get into Tuesday evening overnight, the system is going to move out into open Atlantic waters,” he said, adding that the storm could be over by Wednesday morning.