Photo: Supplied
Tonga's Geological Services says the recent Home Reef volcanic activity poses a low risk to the Vava'u and Ha'apai communities.
In its latest update, it said activity has slowed down in the last five days with the last eruption recorded in the early hours of Monday, October 3.
An unnamed island emerged from the Home Reef activity on September 10th, with Tongan authorities reporting plumes of steam stretching upto two kilometres into the sky.
The unnamed island had been submerged since 2008.
Tonga's head geologist Taniela Kula said the unnamed island is currently 15 acres in size, the equivalent of six rugby fields, and is continuing to grow.
Kula said the island first appeared in 1984.
"It disappeared after a couple of months, that was in 1984. In 2006, it erupted again, the island was upto 800 metres wide, 800 metres by 400 metres then and it submerged again after a year and a half.
In 2008, it was below the water but it has now just re-emerged," he said.
Kula said there are lava flows, but the eruption is 'non-threatening.'
"It's non-threatening, just lava flow and new magma coming out, so we'll be fine," he said.
The island is expected to submerge back into the ocean.
All mariners are advised to sail beyond 4km from Home Reef until further notice according to Tonga's Geological Service.