Half-a-million people have been forced to flee their homes as India faced its biggest cyclone since the turn of the century.
Aid agencies are gearing up to help those worst affected by the storm, though the full extent of the damage - including a death toll - will not be known until daybreak.
Children's charity World Vision said its teams on the ground were already seeing signs of the storm.
Dharmendra Naik, manager of its programmes in Jagathsinghpur district, said: "Our staff along the coast have been seeing rain falling continuously and winds pick up. People have been trying to stock up on essentials and that has caused the price of many items to be driven higher."
More top news
A man had a "miracle escape" when his £200,000 Ferrari careered off a motorway and into a field - just an hour after he bought it.
Hundreds of towers across England were discovered to have fire safety flaws including broken fire doors and holes, new figures show.
The Post Office's abandoned underground railway opens its doors on Friday some 14 years after the last letter was transported through it.