The second major snowstorm in three days will continue to spread across New England Tuesday night, causing travel disruptions.
After a snowstorm dropped as much as 17 inches of snow in New England this weekend, another round Tuesday night will bring up to 10 inches of new snow in some locations.
A system that started in the Midwest on Monday will swing northeastward along the New England coast Tuesday night.
In general, most areas will receive 1 to 3 inches of snow. However, the storm will really ramp up in New England, making 3 to 6 inches likely for Hartford, Conn.; Providence, R.I.; Portland, Maine; and Boston.
Parts of eastern Maine and into Atlantic Canada will have a general 6-10 inches of snow and possibly as much as a foot.
Roads will be cold enough to allow some of the snow to stick, threatening significant travel delays. Air travel also faces the risk of delays due to slippery runways and ice accumulation.
Already Tuesday morning, delays due to snow and ice were occurring at La Guardia International Airport in New York, according to the Federal Aviation Administration (FAA).
The wintry weather also closed portions of I-80 in Pennsylvania in the early morning hours of Tuesday. On the Pennsylvania Turnpike, crews reported that treatment was underway for snow that had fallen throughout the state.
As of Tuesday afternoon, snow and ice excessively delayed flights destined to Boston Logan International Airport, Newark International Airport and La Guardia Airport. All of these airports reported delays of more than an hour, according to the FAA.
By Tuesday night, Boston Logan Airport experienced a ground stop program due to the snow and ice. Delays at the airport exceeded one hour. In addition, MassDOT reduced the speed limit to 40 mph along I-90 from the New York border to Boston due to the wintry conditions.
Flurries and locally heavy snow squalls will sweep in behind the storm late Tuesday night across the central Appalachians to part of the I-95 mid-Atlantic corridor.
The snow showers can hit as road surface temperatures are cooling, causing the snow to stick to roads and producing icy spots.
The storm will continue to roll northeastward spreading heavy snow across part of Canada, including New Brunswick, Nova Scotia, Prince Edward Island and Newfoundland Tuesday night into Wednesday.
Through the middle of the week, cold air will continue in New England, but milder air will move into the Midwest, helping to melt the snow from the last few days.
Record-challenging warmth is possible this weekend in the mid-Atlantic to parts of New England, along with the potential for heavy rain and flooding. Rain, fog and thunderstorms could slow early Christmas travel this weekend in a large part of the Eastern United States.
Expert Senior Meteorologist Alex Sosnowski contributed content to this story.
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Upper Midwest (1941)
Severe modern blizzard in North Dakota: 39 dead in ND; 32 dead in MN; 85 mph wind gust in Grand Forks; 75 mph wind gust in Duluth. The coldest front crossed Minnesota in 7 hours, at 30 mph.
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Record-tying low of 28 degrees in the morning followed by a record high of 61 degrees in the afternoon (records only go back to 1953).
Eastern States (1993)
Dozens of record low temperatures established two mornings after "the storm of the century."