Jamaicans flock to the supermarkets to take care of last minute shopping pending the arrival of Hurricane Matthew in Kingston, Jamaica. (Gilbert Bellamy/Reuters)

One of the most powerful Atlantic hurricanes in recent history weakened a little on Saturday as it drenched coastal Colombia and roared across the Caribbean on a course that still puts Jamaica, Haiti and Cuba in the path of potentially devastating winds and rain.

Matthew briefly reached the top hurricane classification, Category 5, and was the strongest Atlantic hurricane since Felix in 2007.

The U.S. National Hurricane Center in Miami said that Matthew’s winds had slipped from a peak of 160 mph to a still-potentially devastating 140 mph and that it was expected to reach the eastern part of Jamaica on Monday.

The forecast track would carry it across Cuba and into the Bahamas, with an outside chance of a brush with Florida, though that would be several days away. “It’s too early to rule out what impacts, if any, would occur in the United States and Florida,” said Dennis Feltgen, a spokesman at the Hurricane Center.

As Matthew skimmed past the northern tip of South America, there were reports of heavy flooding and at least one death.

Authorities said at least 18 houses were damaged along the La Guajira peninsula of Colombia, which has been suffering from a multiyear drought. They said a 67-year-old man was swept away to his death by a flash flood in an area where it hadn’t rained for four years.

Local TV broadcast images of cars and tree trunks surging though flooded streets in coastal areas.

Colombian authorities closed access to beaches and urged residents living near the ocean to move inland in preparation for storm surges. There was also concern that heavy rain across much of the country could dampen turnout for Sunday’s nationwide referendum on a historic peace accord between the government and leftist rebels.

In Jamaica, high surf began pounding the coast, and flooding temporarily closed the road linking the capital to its airport.

Many also began stocking up for the emergency.

“I left work to pick up a few items, candles, tin stuff, bread,” 41-year-old Angella Wage said at a crowded store in the Half Way Tree area of the capital, Kingston. “We can never be too careful.”

As Hurricane Matthew threatens the Caribbean on Sunday, Haitians worry about flood coming from the canal of Portail Leogane due to the accumulation of garbages. (Hector Retamal/AFP/Getty Images)

Jamaicans are accustomed to intense storms, but Hurricane Matthew looked particularly threatening. At its peak, it was more powerful than Hurricane Gilbert, which made landfall on the island in September 1988 and was the most destructive storm in the country’s modern history.

The U.S. Navy base at Guantanamo Bay, Cuba, is also potentially in the path of the storm. A mandatory evacuation of nonessential personnel, including family members of military personnel, was underway and everyone remaining behind was being told to take shelter, said Julie Ann Ripley, a spokeswoman. There are about 5,500 people living on the base, including 61 men held at the detention center.

— Associated Press