A storm surge the giant wall of water that that a cyclone blasts ashore is the big killer in these storms, even more than winds.
The storm already has been large and powerful for nearly 36 hours, he said, and those winds have built up tremendous amount of surge, Maue said.
Satellite images showed the cyclone filling nearly the entire Bay of Bengal, an area larger than France.
A storm this large can't peter out that fast," Maue said. "There's nothing to stop it at this point."
Officials canceled holy day celebrations and stockpiled emergency supplies in coastal Orissa and Andhra Pradesh states.
The Indian Meteorological Department warned that Phailin was a "very severe cyclonic storm" that was expected to hit with maximum sustained winds of 210-220 kilometers (130-135 miles) per hour.
However, the U.S. Navy's Joint Typhoon Warning Center in Hawaii forecast maximum sustained winds of 269 kilometers (167 miles) per hour with gusts up to 315 kilometers (196 miles) per hour.
Indian officials also made less dire predictions about the storm surge, saying only it would be at least 10 feet (3 meters) high.
In Bhubaneshwar, government workers and volunteers were putting together hundreds of thousands of food packages to be distributed at relief camps.
The state's top official, Chief Minister Naveen Patnaik, appealed for people to cooperate with officials as they order people to leave their homes.
"I request everyone to not panic. Please assist the government. Everyone from the village to the state headquarters have been put on alert," he told reporters.
In Paradip, the Orissa port city hammered in a 1999 cyclone, at least seven ships had put to sea to ride out the storm, with other boats shifted to safer parts of the harbor, officials said.
U.S. forecasters repeatedly warned the storm would be immense.
"If it's not a record it's really, really close," University of Miami hurricane researcher Brian McNoldy told The Associated Press. "You really don't get storms stronger than this anywhere in the world ever. This is the top of the barrel."
To compare to killer U.S. storms, McNoldy said Phailin is near the size of 2005's Hurricane Katrina, which killed 1,200 people and caused devastating flooding in New Orleans, but Phailin also has the wind power of 1992's Hurricane Andrew, which had 165 mph (265 kph) winds at landfall in Miami.
The storm continues on its current path without weakening, it is expected to cause large-scale power and communications outages and shut down road and rail links, officials said. There would also be extensive damage to crops.
Patro said tens of thousands of more people will be moved to safer areas before the cyclone hits.
"No one will be allowed to stay in mud and thatched houses in the coastal areas," he said.
The government also began evacuating 64,000 people from the low-lying areas of three vulnerable districts in neighboring Andhra Pradesh state, said state Revenue Minister N. Raghuveera Reddy.
The sea had already pushed inland as much as 130 feet (40 meters) in parts of Andhra Pradesh.
Officials have been stockpiling emergency food supplies, and setting up shelters for people expected to flee the heavy winds and rains. The Indian air force said four transport planes and 18 helicopters were being kept ready for relief operations in the region.
What makes this storm so fearsome is that there's no wind shear to weaken it and the water that is fueling it is warm and deep, McNoldy said. Those are the ingredients for a record storm.
The Bay of Bengal has been the scene of some of the deadliest storms in recent history. The 1999 Orissa cyclone, which was similar in strength to Phailin, killed 10,000 people.
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Associated Press writer Seth Borenstein contributed to this report from Washington.
