It was set to be the strongest storm to hit the island in about 90 years.
Hurricane Maria has made landfall near Yabucoa, Puerto Rico, the U.S. National Hurricane Center (NHC) said on Wednesday.
The hurricane is about 35 miles (55 km) southeast of San Juan, Puerto Rico with maximum sustained winds of 155 miles per hour (250 km per hour), the NHC said, adding that it is moving in a north-westerly direction at 10 mph (17 km/h).
Maria, packing catastrophic winds and causing surges, earlier killed at least one person in the French territory of Guadeloupe and devastated the tiny island nation of Dominica. The second maximum-strength storm to hit the Caribbean this month, Maria battered the U.S. Virgin Island of St. Croix on Wednesday before heading toward Puerto Rico, where it was set to be the strongest storm to hit the island in about 90 years.
The storm is heading northwest, on a track directly over the island of 3.4 million people.
“We have not experienced an event of this magnitude in our modern history,” Ricardo Rossello, governor of Puerto Rico, said in a televised message on Tuesday.
“Although it looks like a direct hit with major damage to Puerto Rico is inevitable, I ask for America’s prayers,” he said, adding the government has set up 500 shelters.
Puerto Rico’s public safety commissioner Hector Pesquera issued a dire warning to the island’s residents as the storm approached: “You have to evacuate. Otherwise, you’re going to die. I don’t know how to make this any clearer.”
In Puerto Rico, Maria is expected to dump as much as 25 inches (63.5 cm) of rain on parts of the island, the NHC said. Storm surges, when hurricanes push ocean water dangerously over normal levels, could be up to 9 feet (2.74 meters).
The heavy rainfall could cause life-threatening flash floods and mudslides, it added.
A few hours earlier, Maria passed west of St. Croix, home to about half of the U.S. Virgin Islands’ 103,000 residents, as a rare Category 5 storm the top of the five-step Saffir-Simpson scale.
The center has hurricane warnings and watches out for the U.S. and British Virgin Islands, Puerto Rico, Culebra, and Vieques, the Turks and Caicos Islands, the southeastern Bahamas and the Dominican Republic from Cabo Engano to Puerto Plata.
Many U.S. Virgin Islands residents fled to shelters around midday Tuesday. U.S. Virgin Islands Governor Kenneth Mapp warned residents that their lives were at risk.
“The only thing that matters is the safety of your family, and your children, and yourself. The rest of the stuff, forget it,” Mapp said.
Authorities expect to start assessing storm damage on St. Croix from daybreak.
After crossing Puerto Rico, Maria will pass just north of the northeast coast of the Dominican Republic on Wednesday night and Thursday, the NHC said.
It was too early to know if Maria will threaten the continental United States as it moves northward in the Atlantic.
Earlier this month, Irma devastated several small islands, including Barbuda and the U.S. and British Virgin Islands, and caused heavy damage in Cuba and Florida, killing at least 84 people in the Caribbean and the U.S. mainland.
Maria is set to be the strongest hurricane to hit Puerto Rico since 1928, when the San Felipe Segundo hurricane made a direct hit on the island and killed about 300 people, the National Weather Service said.
A slow weakening is expected after the hurricane emerges over the Atlantic north of Puerto Rico and the Dominican Republic, the NHC added.
Puerto Rico avoided a direct hit from Irma, but the storm knocked out power for 70 percent of the island, and killed at least three people.
“This is going to be catastrophic for our island,” said Grisele Cruz, who was staying at a shelter in the southeastern city of Guayama. “We’re going to be without services for a long time.”
Puerto Rico is grappling with the largest municipal debt crisis in U.S. history, with both its government and the public utility having filed for bankruptcy protection amid fights with creditors.
The storm plowed into Dominica, a mountainous country of 72,000 people, late on Monday causing what Prime Minister Roosevelt Skerrit called “mind-boggling” destruction.
North of Dominica, the French island territory of Guadeloupe appeared to have been hit hard. The Guadeloupe prefecture said one person was killed by a falling tree and at least two people were missing in a shipwreck.
Some roofs had been ripped off, roads were blocked by fallen trees, 80,000 households were without power and there was flooding in some southern coastal areas, the prefecture said in Twitter posts.
This story was updated with new information about Hurricane Maria’s landfall in Puerto Rico.