While international aid has begun to arrive, food security remains a significant concern.
Flooding has damaged many properties including the Tonga Mission headquarters.
Seventh-day Adventists across the South Pacific are anxiously awaiting news of family and friends following the eruption of a huge underwater volcano near Tonga on Saturday.
A volcanic eruption in 1994 destroyed the Seventh-day Adventist Church's mission compound in Rabaul (PNG). Standing in the midst of the devastation and his own disappointment, Dr Brad Watson soon realised an important truth: God is in the business of giving "beauty for ashes" (Isaiah 61:3).
Many people lost everything except the clothes they were wearing as they ran to escape to higher ground.
Vanuatu students are missing their families but have settled in well to Aore Adventist Academy.
A state of emergency has been declared on the northern Vanuatu island of Ambae, following increased volcanic activity in the past few days.