One month after South Asia's Oct. 8 earthquake, the estimated regional death toll shot up sharply to 87,350 on Tuesday following a new count of Pakistan's casualties, an official said.

The United Nations again appealed for more money to help victims, urging donors to be as generous as with other recent disasters. The world body said it urgently needs $42 million to maintain the aid effort through November.

People will "freeze to death if they don't get assistance in weeks," U.N. humanitarian chief Jan Egelandsaid in New York.

The toll in Pakistan jumped to 86,000 -- 13,000 higher than the official count -- under a broad assessment by the World Bank and Asian Development Bank, working with local governments and aid agencies, Pakistani Finance Ministry official Iqbal Ahmed Khan said Tuesday.

India has reported 1,350 deaths in its territory.

The central Pakistani government's official death toll -- still at 73,000 -- has lagged behind other estimates, including those of local provincial governments in the quake-affected areas, who have been reporting figures adding up to 79,000.

Khan said the new tally for Pakistan came after more bodies were pulled from debris and recovery teams reached areas previously blocked by landslides unleashed by the magnitude-7.6 quake and hundreds of aftershocks.

Aid officials fear that winter could bring a new wave of deaths among survivors.

The need for aid is "even more urgent than it was in these other hurricanes or tsunamis," Egeland said, urging everyone from individuals to oil-rich nations to contribute.

The quake destroyed more than 3 million homes across Pakistan's North West Frontier Province and its portion of Kashmir, many of whom have moved into tent camps that have sprung up in foothills of the Himalayas.

Most of the camps still lack adequate clean water and sanitation, aid workers say.

"Unless conditions are improved in these camps, diseases like cholera could spread like wildfire," said quake relief head Jane Cockin of the British charity Oxfam.

Egeland said the United Nations has launched "Operation Winter Race" to bring shelter to about 200,000 people living at altitudes above the snow line and about 150,000 expected to come down to lower elevations.

"The concept is one warm room per family before it becomes too cold," he said.

Egeland said he was encouraged that 334,000 tents have been delivered and that 332,000 more are in the pipeline, but appealed for stoves to help keep people warm.

Survivors continue to stream into Muzaffarabad, the hub of Pakistan's relief effort. They can be seen pitching their new tents on the windy bluffs overlooking the city, using crowbars to dig into the ground.

"Life is very difficult," one young man said. "I waited one month for a tent and our food doesn't last long." He gave his name as Jamil and said he was 28.