Gale force winds in the Cook Islands atoll of Palmerson appear to have eased as cyclone Percy moves south between Rarotonga and Niue.
The deputy police commissioner, Ma'ara Tetava, says Palmerston is facing 35-40 knot winds and the main concern is rough seas.
Meanwhile, there is a suggestion that some people may have to be relocated from cyclone devastated Nassau in the northern Cooks.
A boat filled with emergency supplies is headed for Pukapuka and Nassau and could arrive in about 24 hours, depending on the weather.
The cyclone left the 640 people on Pukapuka and Nassau with only rudimentary shelter.
Chief Inspector Teroi John Tini of the Emergency Operations Centre says some people may be taken off Nassau while repairs continue.
"There was a suggestion that the older folks and young children from Nassau may be relocated to Pukapuka to enable the adult population to do some cleaning and also repairing of existing buildings, and then to bring back those who have been relocated to Pukapuka."
