The small islands of the Lau group have been warned to expect destructive storm force winds of up to 155 kilometres an hour over the next few hours.
At its centre the category three system is producing average winds of 150 kilometres an hour and gusts of more than 205 kilometres an hour.
Planner for the Eastern Division, Eliki Masa, says there have been no reports of significant damage although some trees have been damaged.
Mr Masa says the Lau group has been well prepared.
