Gray Harrington clears snow from a dock at the Boston Harbor Shipyard and Marina in Boston, Tuesday, March 13, 2018.
Michael Dwyer, AP

The third nor'easter of the month blasted parts of New England with heavy snow, howling winds and whiteout conditions Tuesday, wreaking travel havoc, closing schools and businesses, and knocking out power to hundreds of thousands of people.

In eastern Massachusetts, blizzard conditions were reported. Winds gusting as high as 55 mph "will cause whiteout conditions in blowing snow," the National Weather Service said.

The storm rapidly strengthened over 24 hours into early Tuesday and underwent bombogenesis — caused when plunging barometric pressure deeply intensifies a storm, AccuWeather said. Snowfall in northern and eastern New England could exceed 2 feet in some locations.

Travel will be extremely difficult as the snow from the storm, dubbed Skylar by The Weather Channel, clogs roads.

More: Tuesday: Most Boston flights grounded, 1,500+ cancellations nationwide

More: Blizzard warnings issued as another 'bomb cyclone' eyes New England

The weather service posted blizzard warnings for parts of Massachusetts, Maine and New Hampshire.

"Three nor'easters in less than 2 weeks isn't easy on anyone," Mass. Gov. Charlie Baker tweeted. "We are extremely grateful for the hard work of our first responders, utility and road crews, and municipal officials who have been working nonstop to clean up after these powerful storms."

Nationwide, airlines canceled more than 1,000 flights Tuesday and scores more for Wednesday, with Boston the hardest-hit city.

Some 200,000 homes and businesses were without power Tuesday, mainly in Massachusetts and Rhode Island, according to poweroutage.us.

"It is a very serious storm, most of Rhode Island will see over a foot of snow, " Rhode Island Gov. Gina Raimondo said. "Please hunker down, stay in, stay off the roads."