No deaths had been reported, but authorities in the U.S. territory said it was too early to know the full scope of damage from an expansive storm that was still forecast to unleash torrential rain across Puerto Rico on Monday.
Up to 30 inches was forecast for Puerto Rico's southern region. As much as 15 inches were projected for the eastern Dominican Republic.
“It’s important people understand that this is not over,” said Ernesto Morales, a meteorologist with the National Weather Service in San Juan.
He said flooding reached “historic levels,” with authorities evacuating or rescuing hundreds of people across the island.
“The damages that we are seeing are catastrophic,” said Gov. Pedro Pierluisi.
Before dawn on Monday, authorities in a boat navigated the flooded streets of the north coast town of Catano and used a megaphone to alert people that the pumps had collapsed, urging them to evacuate as soon as possible.
Brown water rushed through streets, into homes and consumed a runway airport in southern Puerto Rico.
Fiona also ripped asphalt from roads and washed away a bridge in the central mountain town of Utuado that police said was installed by the National Guard after Hurricane Maria hit in 2017 as a Category 4 storm.
The storm also tore the roofs off homes, including that of Nelson Cirino in the northern coastal town of Loiza.
“I was sleeping and saw when the corrugated metal flew off,” he said as he watched rain drench his belongings and wind whip his colorful curtains into the air.
Fiona was centered 35 miles southeast of Samana in the Dominican Republic, with maximum sustained winds of 90 mph on Monday morning, according to the U.S. National Hurricane Center. It was moving to the northwest at eight mph.
Tropical storm-force winds extended out for 150 miles (240 kilometers) from the center.
Forecasters said the storm's was expected to emerge over the Atlantic in the afternoon and pass close to the Turks and Caicos islands on Tuesday. It could near Bermuda as a major hurricane late Thursday or on Friday.