NEW DELHI—Wide swaths of coastal India and Bangladesh were flooded and millions were without power on May 21 as Cyclone Amphan, the most powerful storm to hit the region in more than a decade, killed more than 80 people and cut a path of destruction that is still being assessed.
Many parts of the Indian metropolis of Kolkata, home to more than 14 million people, were underwater, and its airport was closed briefly by flooding. Roads were littered with uprooted trees and lamp posts, electricity and communication lines were down, and centuries-old buildings were damaged.
