(CNN) Winds as strong as those of a tropical storm pummeled New England on Thursday, as a storm known as a bomb cyclone knocked out power and promised to disrupt travel in the region through the end of the workweek.

The storm "parked over southern New England with the pressure equivalent to a Category 2 hurricane" for much of Thursday, CNN meteorologist Dave Hennen said.

Thousands of customers from New York to Maine were still without electricity as of Thursday night, according to PowerOutages.us . And more than 100 flights have been canceled Thursday at Boston Logan International Airport, while more than 230 have been canceled at New York's John F. Kennedy & LaGuardia airports, FlightAware.com reports ; more delays and cancellations are expected through late Friday.

Wind gusts of up to 50 mph punished New England for much of Thursday, while New York City, Boston, and Portland, Maine, felt winds of at least 39 mph -- the low end of tropical-storm force -- with stronger gusts.

Provincetown, on Massachusetts' Cape Cod, has already been lashed with winds of 90 mph. Boston Logan recorded gusts of 70 mph overnight into Thursday, and gusts atop Mount Washington in New Hampshire were clocked at 125 mph.

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