Cyclone Yasa, a top category five storm, made landfall over Bua province on the northern island of Vanua Levu on Thursday evening, bringing torrential rain, widespread flooding and winds of up to 285 km per hour (177 miles) across the archipelago.
Scores of houses were destroyed, while power was cut to some areas and roads blocked by fallen trees and flash flooding, authorities said.
Images shared on social media showed roads blocked by landslides, floodwaters and power lines. All roads in Rakiraki, a district on the main island with about 30,000 residents, were flooded, Fiji’s Road Authority said.
Fiji Prime Minister Frank Bainimarama confirmed the two deaths in a video posted in Facebook.
“Two fatalities have been confirmed. A 45-year old man in Labasa and a three-month old baby,” he said.
“The dust has yet to settle… but we are likely looking at hundreds of millions of dollars in damages.”
Fiji on Thursday had declared a state of natural disaster, implemented a nightly curfew and ordered its entire population of nearly 1 million people to seek shelter.
“Villages in Vanua Levu have lost a lot of houses. The wind has flattened many community buildings and crops have been flattened,” Fiji Red Cross Society Director-General Ilisapeci Rokotunidau told Reuters by phone from Suva, the country’s capital.
Bainimarama said authorities were scrambling to help affected communities. Adverse weather has hampered efforts by aid groups to dispatch assistance, with waves of more than 3 metres (10 ft) preventing ships leaving Suva.
Concerns remain about heavy rains, although the storm has weakened in strength and is now a category two as it moves south across the island chain.
(Reporting by Colin Packham in Sydney; Editing by Lincoln Feast and Richard Pullin)