Cyclone Fani is beginning to make landfall in eastern India.
The country's Meteorological Department says wind speeds will reach 195 km/h (121 mph) when the storm is at full force.
More than a million people in the state of Orissa have already been forced to leave their homes.
Several neighbouring states in India have also been put on high alert.

Two injured from falling debris as missiles intercepted in Saudi Arabia
Venezuela opposition leader Machado returns to country
Riyadh airport to designate terminals for flights from October 25
Saudi Arabia intercepts, destroys drones, missiles targeting different regions
