“Super-storm” Sandy has swept into the eastern US coast with hurricane-force winds, bringing severe flooding, cutting power and claiming 13 lives.
Sandy caused a record surge of seawater in New York City, flooding subway and road tunnels and plunging much of Lower Manhattan into darkness.
An estimated 50 million people could be affected, with up to one million ordered to evacuate homes.
At least five million people across several states are without electricity.
The full extent of the damage may not be known until daybreak.
Over the past week Sandy has killed dozens of people as it carved a path of destruction through the Caribbean.
Public transport has been halted in several eastern US cities, and thousands of flights have been grounded.