A fierce nor’easter battered the Atlantic Coast on Friday, toppling power lines, stranding thousands of travelers, inundating coastal roads and homes with churning seawater and killing at least five people.

The storm’s effects were felt as far south as Georgia and as far north as Maine. In Rhode Island, the winds were so severe that officials shut down the Newport Bridge. In New York City, most flights were grounded for a time on Friday afternoon. And in the Washington suburbs, downed trees were strewn across the streets.

More than 3,000 flights were canceled and more than 3,500 others delayed across the country on Friday, according to FlightAware, many at coastal airports in the storm’s path. Amtrak suspended service along its Northeast Corridor, and more than two million people lost electricity. Meteorologists at the National Weather Service said coastal flooding had damaged homes, closed roads and sent at least one car floating down a street, warning that more water-related destruction could be forthcoming.

Here’s the latest:

• At least five people died Friday in episodes related to the storm, the authorities said.

In Putnam County in New York, the sheriff said an 11-year-old boy died after a large tree fell and crashed into a home, trapping the boy underneath.