Almost 85 percent of the country's population of about 105,000 people has been affected by last weekend's volcanic eruption and tsunami, the Tongan government said.
It shared more details about the impact of the twin disasters in a statement.
The death toll remains at three: those killed were Telai Tutu'ila, 65, from Mango Island, Lataimaumi Lauaki, 49, from Nomuka Island, and British woman Angela Glover, 50, who lived in Nuku'alofa.