Heavy snow will disrupt travel along the corridor from Buffalo to Boston early this morning.

Six to ten inches of snow for parts of the Northeast.

AccuWeather.com predicts snow mixing with ice in New York City.

Widespread snow-related watches and warnings are in effect.

Major Arctic blast destined for East.

Snowstorms will hit the Midwest and Northeast next week.

Santa Ana wind for Southern California.

Raw video of the heavy snow in Cleveland.

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A winter storm will continue to strengthen early this morning, spreading heavy snow from Buffalo into the Boston area and crippling travel along the corridor between the two cities. The storm dumped 12 inches of snow in Chicago Friday through Saturday, and over 5 inches in Detroit.

The storm ramped up Saturday after tapping into moisture from the Gulf of Mexico. By this morning, the storm's center will shift from the Ohio Valley to the southern New England coast. The clash of very cold air to the north and milder air surging ahead of the storm is fueling the blossoming area of snow early this morning.

At times, the snow will come down at the rate of 1 to 2 inches per hour, resulting in a quick cover of snow on roads, poor visibility and dangerous travel conditions. Flight delays and cancellations can also be expected with the snow.

Meanwhile, a thin corridor of an icy mix will fall to the south of the snow early this morning, from along the Mason-Dixon Line to the southern New England coast, creating treacherous travel conditions. In New York City, a mix of sleet and freezing rain will fall for a time.

The heaviest snow early this morning will fall from central New York into Massachusetts with 6 to 12 inches in the forecast. Snow falling across the Boston area is expected to accumulate 3 to 6 inches. The system will depart from New England today, ending the snow across the area by midday or the early afternoon.

Be part of the forum discussion about the storm hitting New York City and Boston.

Philadelphia on the edge of the snow.

Kate Bilo on snow removal.

Send us your snow photos.

Storm Snowfall totals across the Midwest and Northeast.

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After this weekend's winter storm, another Alberta Clipper will quickly travel across the northern tier of states, affecting the Great Lakes Monday and the Northeast Tuesday. On its heels, an extremely cold air mass will drop southward from western Canada and overwhelm much of the eastern half of the country.

The thinking here at AccuWeather.com Global Headquarters is that this may be the coldest arctic blast since the winter of 1994. Overnight lows in cities like Boston, New York and Philadelphia toward the end of next week and early next weekend are expected to be near zero, and highs will barely make it into the lower teens. Similar conditions may be felt in Cleveland, Detroit and Pittsburgh as well. Farther west, temperatures in Minneapolis and perhaps even Chicago on Thursday and Friday will struggle to get out above zero during the daylight hours.

In addition, gusty winds picking up behind the Clipper system Monday will send AccuWeather RealFeel® temperatures down into the 30-below-zero range across the northern Plains and upper Midwest by Tuesday. This is very dangerous cold for people and their pets. Exposed skin can freeze in a matter of minutes in conditions like this. Schools and other events and meetings may have to be cancelled due to this extreme cold, and there is the danger of water pipes bursting in poorly insulated homes.

Even Washington, D.C., which we are watching closely for the Presidential Inauguration a week from this Tuesday, and Baltimore will have their coldest temperatures in years, with highs probably not going above 20 on Friday. Hopefully, this bitterly cold air is out of the way for D.C. before Inauguration Day, and no major storms follow on the heels of this bitter blast, which does tend to happen.

The Southeast will not be immune from the arctic air mass either. Temperatures in Atlanta may struggle to rise above freezing on Friday, while overnight lows drop into the lower teens across the piedmont of the Carolinas. Even Florida will see an end to the almost endless streak of balmy temperatures, with Orlando possibly not making it past 55 on Friday and Saturday and frosts and freezes possible in many inland locations. Many Floridians will be bundling up in their winter coats!

AccuWeather.com Community Director Jesse Ferrell says that the forums are abuzz about this potential for extreme cold next week in the Northeast. He has a blog showing maps and data from the GFS, which says that New York City will be the coldest in at least 14 years.

Forum on the cold weather

Computer models shown on the Community blog show just how cold the weather will be next week.

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AccuWeather.com meteorologists are keeping a close eye on the potential for a couple of snowstorms to develop next week. They will both be at the leading edge of the cold shots next week.

The first storm appears like it will move through the northern Plains tonight, plow through the Midwest Monday and take aim at New England by Tuesday.

A storm accompanying the second arctic blast could return significant snow from the Midwest to the Northeast later in the week. The cold air that follows the first storm will play a role in the second storm's potential at delivering snow to the Northeast's major cities.

Be sure to check in with AccuWeather.com in the upcoming days as more details associated with the snowstorms unravel. It is too far ahead to be certain of the exact track of the storms.

One aspect of the long-range forecast that has raised the confidence level slightly here at AccuWeather.com is that models have recently been consistent on showing a snowstorm impacting a part of the Midwest to the mid-Atlantic on Tuesday.

Brett Anderson's blog about Canada's weather.

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According to Expert Senior Meteorologist Joe Lundberg, there are indications that a "weak La Niña may be developing" in the Pacific Ocean. The La Niña may explain why the Southeast has not had much in the way of snow and cold weather this winter so far.

Katie Fehlinger discusses what is a La Niña

What are the weather implications of a La Niña

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