Tropical Cyclone Winston is now making landfall in Fiji.

The storm, which is the most powerful ever to hit the island nation, was tracked moving through the narrow waterway ocean in between the country's main islands of Viti Levu and Vanua Levu.

"Batten down the hatches. It's going to get worse before it gets better," Van Dam said.

Tropical Cyclone Winston is packing winds of 180 mph with gusts over 220 mph — the equivalent of a Category 5 hurricane — according to the Joint Typhoon Warning Center. The storm is expected to strengthen further before the eye of the storm hits.