Coastal New England and Canada are bracing for Hurricane Lee as the large storm continues its track to the north, with tropical storm and hurricane conditions expected to begin Friday and last throughout the weekend.

Lee will remain “large and dangerous” for the next few days while Hurricane Margot is expected to weaken to a tropical storm by Saturday. A new system in the central Atlantic is on their heels and is highly likely to become a tropical depression by the weekend.

The low-pressure system in the central Atlantic is expected to move west-northwest to northwest at 10 to 15 mph, according to the latest forecast. Its odds of developing were at 90% over the next two to seven days as of Thursday night.

Hurricane Lee was maintaining Category 1 storm strength Thursday night with sustained wind speeds of 85 mph. The storm continues to arc northward, accelerating on a trajectory that will carry it along the eastern seaboard of the United States.

Drone footage released by Libya's Al-Ahrar TV on Tuesday showed the extent of flood damage in the city of Derna. Storm Daniel, which hit eastern Libya over the weekend, caused dams to collapse and triggered floods that killed at least 2,000.

As of 8 p.m. Eastern time Thursday, Lee was about 185 miles west of Bermuda and 640 miles south of Nantucket, Massachusetts, moving north at 15 mph, according to the National Hurricane Center.

Though Lee is expected to start gradually weakening Friday night, Lee will remain large and powerful, forecasters said. Hurricane Lee’s wind field had expanded Thursday, with hurricane-force winds extending outward up to 105 miles from Lee’s center and tropical-storm-force winds extending outward up to 345 miles as Thursday night.

Forecasters said Lee will approach the coast of New England and Canada on Friday and Saturday before crossing Atlantic Canada on Saturday night and Sunday. Bermuda will experience tropical storm conditions through Friday morning, and southern New England will experience them starting Friday afternoon, the National Hurricane Center said. Hurricane conditions could affect parts of Maine and Canada Saturday.

A hurricane watch is in place for the coast of northern Maine to the Canadian border, and most of coastal New England is under a tropical storm warning, including Martha’s Vineyard and Nantucket, up to the Canadian border. Several areas of southeastern Atlantic Canada are under a tropical storm watch.

Forecasters expect 1 to 4 inches of rain across portions of eastern New England into New Brunswick and Nova Scotia, with the potential for localized urban flooding and flooding in streams. Bermuda could see up to 2 inches of rain into Friday.

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