More than 200,000 people in India are being evacuated as a massive cyclone is sweeping through the Bay of Bengal towards the east coast.
Cyclone Phailin, categorised as “very severe” by weather forecasters, is expected to hit Orissa and Andhra Pradesh states on Saturday evening.
The Meteorological Department has predicted the storm will bring winds up to 220 km/h (136mph).
A deadly super-cyclone in 1999 killed more than 10,000 people in Orissa.
But officials say this time they are better prepared, the BBC’s Sanjoy Majumder in Delhi reports.
However, the US Navy’s Joint Typhoon Warning Center in Hawaii is forecasting even stronger winds, predicting sustained speeds of up to 269 km/h (167 mph).
Cyclone Phailin is expected to make landfall close to the city of Gopalpur (Orissa state), the India Meteorological Department (IMD) warned on Friday.
It said Phailin would bring heavy rain, which would be accompanied by a storm surge of at least 3m (10ft).
“Extensive damage” was expected to mud houses on the coast.
“No one will be allowed to stay in mud and thatched houses in the coastal areas,” said Orissa’s Disaster Management Minister Surya Narayan Patra.
“The storm has high damage potential, considering windspeed,” IMD Director General Laxman Singh Rathore was quoted as saying.
The army is on standby in the two states for emergency and relief operations. Officials said helicopters and food packages were ready to be dropped in the storm-affected areas.
Meanwhile, the US Navy’s Joint Typhoon Warning Centre predicted that winds could reach 315 km/h, while the London-based Tropical Storm Risk classified Phailin as a Category Five storm – the most powerful.
The Times of India newspaper warned that local meteorologists may be underestimating the severity of the storm.
Meteorologists also say that the storm is not only intense but covers a wide area.
Fishermen have been asked not to venture out to sea.
Rain and winds are already being felt in Orissa, where authorities said they were setting up shelters for people who would need to be evacuated.
“We are fighting against nature. We are better prepared this time, we learnt a lot from 1999,” said Surya Narayan Patra.
Reports said that there had been panic buying in the state capital, Bhubaneswar, with shelves being emptied of food.
“I’m feeling scared and tense. My son is expected to arrive Sunday. Now I think he won’t make it,” housewife Manjushree Das told the Agence France-Presse news agency.
India’s eastern coast and Bangladesh are routinely hit by cyclonic storms between April and November which cause deaths and widespread damage to property.
In December 2011, Cyclone Thane hit the southern state of Tamil Nadu, killing dozens of people.