The Latest Breaking News from National Hurricane Center

Hurricane Fiona left most of Puerto Rico without power on Sunday, causing catastrophic flooding and landslides on the island before barreling toward the Dominican Republic, a government agency said.

The storm is wreaking havoc on the island's already fragile power grid. Heavy rainfall and catastrophic flooding is continuing across the island.

FORT LAUDERDALE, Fla. — Forecasters hoisted a hurricane warning Saturday for Puerto Rico and watches for the U.S. Virgin Islands and the Dominican Republic’s southern coast as heavy rains from Tropical Storm Fiona pummeled large sections of the Caribbean.

FORT LAUDERDALE, Fla. — Forecasters hoisted a hurricane warning Saturday for Puerto Rico and a watch for the U.S. Virgin Islands and the Dominican Republic’s southern coast as heavy rains from Tropical Storm Fiona pummeled large sections of the Caribbean.

The impending flooding and high winds could imperil the island's fragile power grid.

FORT LAUDERDALE, Fla. — Tropical Storm Fiona is expected to generate hurricane conditions in portions of Puerto Rico on Sunday, and possibly across the U.S. Virgin Islands.

FORT LAUDERDALE, Fla. — Tropical Storm Fiona is forecast to strengthen into a hurricane with top winds of 75 mph by the time the storm approaches the Bahamas.

FORT LAUDERDALE, Fla. — Tropical Storm Fiona is expected to continue moving west with a gradual decrease in forward speed through Saturday night or early Sunday, followed by a turn toward the west-northwest later on Sunday, as it clears the northeastern Caribbean and approaches the Bahamas.

ORLANDO, Fla. — Tropical Storm Fiona, the hurricane season’s sixth named storm, formed Wednesday night east of the Leeward Islands, the National Hurricane Center said.

ORLANDO, Fla. — The next tropical depression of the season is likely to form this week as a low-pressure area pushes west Wednesday morning toward the Caribbean, the National Hurricane Center said in its 8 a.m. update.

ORLANDO, Fla. — The odds of the next tropical storm emerging this week keep going up as the National Hurricane Center monitors two tropical waves in the east Atlantic.