AccuWeather reports a storm passing through the Northeast riding a tidal wave of frigid air will evolve into a blizzard over New England before departing during the Valentine's Day weekend.
The worst of the storm will target the central and northern New England coast tonight into Sunday with wind-driven snow.
Areas far removed from the center of the storm in the mid-Atlantic - including central Pennsylvania - can experience life-threatening cold and the risk of power outages from high winds, AccuWeather reported.
The local forecast from the National Weather Service calls for show showers today, mainly after 8 a.m., that could be heavy at times and accumulate 1 to 2 inches. A south wind of 6 to 14 mph, with gusts as high as 22 mph, is predicted.
Tonight's low is forecast at 1, with wind chill values as low as -20, and the snow showers are expected to continue, accumulating as much as another inch.
Bands of snow
Prior to the storm hitting New England, the leading edge of a blast of arctic air will trigger one or more bands of heavy snow that will sweep southeastward from the Great Lakes to the mid-Atlantic coast today.
According to AccuWeather.com Senior Meteorologist Henry Margusity, "The arctic front will behave like a squall line, but instead of bringing heavy rain, it could bring a brief period of heavy snow."
As this band of snow rolls along like a wall of white, it can create dangerous conditions for those traveling at highway speeds.
"The squall line of snow and the sudden drop of temperature with strong wind gusts can make wet roads slippery in a matter of a couple of minutes and catch motorists off guard," Margusity said.
Motorists should pay close attention to the weather and be on the lookout for rapidly changing road conditions throughout the Interstate 80, I-81 and I-95 corridors on today.
More snow west to east
While the storm moves off the New England coast, it will strengthen rapidly and deliver blizzard conditions from eastern Massachusetts, Rhode Island and eastern Connecticut to southeastern New Hampshire, coastal Maine, Nova Scotia and southeastern New Brunswick this weekend.
The snowfall accumulation will ramp up from west to east across New York state and New England with only the northernmost areas, western Long Island and the New York City metro area being spared heavy snow.
Parts of eastern New England coast to Atlantic Canada will receive a foot or more of snow from the storm.
However, winds and plummeting temperatures caused by the strengthening storm will make for dangerous conditions to be outdoors throughout the Northeast.
Winds may gust past 60 mph in New England and past 50 mph in parts of the mid-Atlantic. As a result, power outages, downed tree limbs and minor property damage may not be limited to New England. Some people could be left in the dark and cold in part of the mid-Atlantic.
A cold Sunday
NWS said there will be areas of blowing snow Sunday, with a high near 7 and wind chill values as low as -23 from a northwest wind that will whip at 21 to 24 mph, with gusts as high as 39.
Sunday night's low will be about -7.