New Snowstorm Before the New Year in NYC, I-95, I-80

By , AccuWeather.com Senior Meteorologist
December 29, 2012; 5:43 AM ET
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A new winter storm is affecting portions of New England, the mid-Atlantic and the Ohio Valley hit by the storm just after Christmas.

This storm will bring more snow to areas that received snow from the post-Christmas storm and will bring snow to some areas that got rain or mostly rain.

Enough snow will fall to make roads slippery and cause travel delays.

There is also the potential for the storm to strengthen to a nor'easter portions of New England and a blizzard over the Maritimes.

For severe-weather-weary folks in the South, the storm will not bring a repeat of the Christmas tornado outbreak.

Refer to AccuWeather.com's Winter Weather Center for the latest snowfall accumulation map.

A general light to moderate snowfall is forecast by AccuWeather.com meteorologists from portions of the Ohio Valley Saturday morning to the northern I-95 mid-Atlantic and New England into Saturday evening. A few locations over the central Appalachians will receive heavy snow for a time.

In addition to part of I-95, stretches of I-66, I-70, I-78, I-80, I-81, I-84 and the Pennsylvania Turnpike can become slippery and snow covered during the storm. As road surface temperatures cool during the late afternoon and evening, wet areas can become icy unless treated.

New York City will be blanketed by a light accumulation of snow Saturday midday into the evening. Image by twitter user @NYCONLY.

However, while the storm will stay relatively mild-mannered while tracking eastward over the interior United States, it will strengthen upon nearing the Atlantic Ocean and take a northward turn.

How quickly this strengthening occurs will determine how heavy the snow, wind, seas and tides become over New England and part of Atlantic Canada spanning Saturday afternoon into Sunday.

Winds and seas are not expected to cause significant coastal flooding in the mid-Atlantic with this storm.

There is the potential for the snow to ramp up just northeast of New York City, through Connecticut with heavy snow windto be factors across portions of eastern New England.

The key to snowfall on central and eastern Long Island and Cape Cod will be whether or not mixing with sleet and rain occurs. If it is all snow in these areas, a foot of snow could fall.

Odds favor all or mostly wind-driven snow over much of Rhode Island, areas just south of Boston in Massachusetts, where between a half a foot and a foot of snow are forecast.

From Boston through the Maine Seacoast people can expect a good ole nor'easter with wind whipped snow.

The worst of the storm appears to be setting up over Nova Scotia, New Brunswick and Prince Edward Island, Canada.

According to Canada Weather Expert Brett Anderson, "An all-out blizzard appears likely over portions of the Maritime Provinces on Sunday."

If the storm develops to its full potential some of these eastern areas could be walloped by a foot (30 centimeters) or more of wind-driven snow and gales that make for not only an angry sea, but the potential for power outages and coastal flooding.

Since the storm will be relatively weak traversing much of the U.S. it is unlikely to throw much snow over the Great Lakes, northern upstate New York and northwestern New England.

Even though it will be a colder storm for part of the I-95 corridor in the mid-Atlantic and southern New England, rain is still forecast for much of North Carolina, southeastern Virginia and the lower part of the Delmarva Peninsula.

Regardless of what the storm brings during the last weekend of 2012, generally dry and seasonable conditions are in store for New Year's Eve at Times Square and in the Northeast. A few flurries may be scattered about the region.

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