Tropical Storm Isaias killed at least nine people, including a five-year-old autistic girl, as it made its way up the US Atlantic Coast.
The five-year-old girl had gone missing from her Philadelphia-area home during the height of the storm Tuesday and was found dead yesterday. Authorities said they believed she was swept away by floodwaters in the creek behind her house.
Two people died when Isaias spun off a tornado that struck a North Carolina mobile home park.
Another person died in Pennsylvania when their vehicle was overtaken by water and swept downstream.
And a man in the New York City borough of Queens died when a tree crushed a car he was inside.
The storm knocked out power to three million homes and businesses from New York to North Carolina, according to local electric companies.
Isaias, which was briefly a Category 1 hurricane when it made landfall in North Carolina late on Monday, reduced the mobile home park in the north of the state to rubble hours later, leaving two people dead.
"It doesn't look real. It looks like something on TV. There's nothing there," Bertie County Sheriff, John Holley, told local reporters.
"Vehicles are turned over. Vehicles are piled on top of each other. It's just very sad."
A mother and her two children who were missing for hours after the storm ripped through the area were found safe later on Tuesday.
In Mechanicsville, North Carolina, a large tree fell on a car, killing the driver.
Elsewhere, strong winds from the storm knocked down trees and power lines across Massachusetts, leaving more than 220,000 customers without power, CBS reported.
North Carolina Governor Roy Cooper said he had spoken with US President Donald Trump, who pledged aid.
Social media images showed tornadoes in Cape May, Marmora and Long Beach Island along New Jersey's southern shore, and tornado damage in Dover, Delaware. In Bear, Delaware, Tammy Trelford Campos said she was terrified to hear a tornado destroy her backyard.
"The damage is crazy. No power, almost all my trees are split or uprooted, water is coming in all windows," she said on Facebook.
New York City, much of New Jersey, all of Massachusetts and other parts of New England went under a tornado watch. New York temporarily shut down coronavirus testing centres as a precaution.