Fiji Meteorological Services director Terry Atalifo said tropical depression (TD03F), which is slow-moving to the west of Fiji, should become a cyclone overnight, warning that the weather system would bring excessive rainfalls.
"Since it's going to remain to the west of us, the convergence zone and the rain bands will continue to bring rain across the whole country in the next few days.
"Therefore, we have a heavy rain warning for the whole of Fiji. We also have a flash-flood warning for all low-lying areas or areas that are prone to flooding across the whole country," he said.
The Fiji Meteorological Service said further flooding continues to be a major concern.
It has issued gale warnings for popular tourist hotspots, the Yasawa and the Mamanuca group of islands.
Fiji National Disaster Management Office director Vasiti Soko said she has seen pictures circulating on social media of people disregarding advisories and continuing to cross and swim in flooded waters.
"It saddens me to announce that we have recorded our first fatality of [TD03F].
"The statistics have shown that a majority of deaths recorded during natural disasters are drowning as a result of people crossing flooded rivers and streams," she said.
Soko said the government's national emergency operations centre was in 24-hour operation, adding that its main focus was getting people out of harm's way.
