Sources said the worst hit was at Wasior, where a river swept away residents in a fast-moving deluge of water.
"Many people didn't have time to save themselves," stammered one of the survivors who manage to escape from the natural fury.
The death toll continued to spiral even as rescue efforts picked up steam with the arrival of security forces.
Seventy-five bodies had been pulled from the mud and the wreckage of crumpled homes said Dortheis Sawaki, who is heading local relief operations.
Sources also said more than 2,000 people were seeking shelter in government buildings and relief camps.