was roaring toward Jamaica on Wednesday, with islanders scrambling to make preparations after the powerful Category 4 storm earlier killed at least six people and .

In Kingston, people boarded up windows, fishermen pulled their boats out of the water before sitting around a table to play dominoes beside a bay, and workers dismantled roadside advertising boards to protect them from the expected lashing winds to come.

A hurricane warning was in effect for Jamaica, Grand Cayman, Little Cayman and Cayman Brac. Beryl was forecast to weaken slightly over the next day or two, but still be at or near major-hurricane strength when it passes near or over Jamaica on Wednesday, near the Cayman Islands on Thursday and into Mexico鈥檚 Yucatan Peninsula on Friday, according to the U.S. National Hurricane Center.

Jamaica was under a state of emergency as the island was declared a disaster zone hours before the impact of Hurricane Beryl.

Jamaican Prime Minister Andrew Holness said that the disaster zone declaration will remain in effect for the next seven days. Holness also announced an island-wide curfew between 6 a.m. and 6 p.m. on Wednesday.

Security forces 鈥渨ill be fully mobilized to maintain public order and assist with disaster relief. As soon as the hurricane has passed, the security forces have developed strategic plans to counter any potential threat of looting or any other opportunistic crimes,鈥� Holness warned.

An evacuation order was also issued for communities across Jamaica that are prone to flooding and landslides. Holness urged Jamaicans to move away from low-lying areas.

A hurricane watch was in effect for Haiti鈥檚 southern coast and the Yucatan鈥檚 east coast. Belize issued a tropical storm watch stretching south from its border with Mexico to Belize City.

Late Monday, Beryl became the earliest storm to develop into a Category 5 hurricane in the Atlantic and peaked at winds of 165 mph (270 kph) Tuesday before weakening to a still-destructive Category 4. Early Wednesday, the storm was about 125 miles (200 kilometers) southeast of Kingston. It had maximum sustained winds of 145 mph (230 kph) and was moving west-northwest at 20 mph (31 kph), the center said.

In Miami, U.S. National Hurricane Center Director Michael Brennan said Jamaica appears to be in the direct path of Beryl. He urged residents to find a safe place to shelter and stay there through Wednesday.

鈥淲e are most concerned about Jamaica, where we are expecting the core of a major hurricane to pass near or over the island,鈥� he said in an online briefing.

Storm surge of 6-9 feet (1.8 to 2.7 meters) above typical tide levels are likely in Jamaica, as well as heavy rainfall.

A tropical storm warning was in place for the entire southern coast of Hispaniola, an island shared by Haiti and the Dominican Republic.

Mexico鈥檚 Caribbean coast was preparing for Beryl Wednesday.

The head of Mexico鈥檚 civil defense agency said Wednesday that Beryl is expected to make a rare double strike on Mexico. Laura Vel谩zquez said the hurricane is expected to make landfall between late Thursday and early Friday along a relatively unpopulated stretch of the Caribbean coast between Tulum and the inland town of Felipe Carrillo Puerto. Because the coast there is largely made up of lagoons and mangroves, there are few resorts or hotels in the area south of Tulum.

The hurricane is expected to weaken to a tropical storm as it crosses the Yucatan peninsula and reemerge over the weekend at storm strength into the Gulf of Mexico. Vel谩zquez said that Beryl is then expected to hit Mexican territory a second time in the Gulf coast states of Veracruz or Tamaulipas, near the Texas border.

As Beryl barreled through the Caribbean Sea, rescue crews in southeastern islands fanned out to determine the extent of the damage the hurricane inflicted on Carriacou, an island in Grenada.

Three people were reported killed in Grenada and Carriacou and another in St. Vincent and the Grenadines, officials said. Two other deaths were reported in northern Venezuela, where five people are missing, officials said. About 25,000 people in that area also were affected by heavy rainfall from Beryl.

One fatality in Grenada occurred after a tree fell on a house, Kerryne James, the environment minister, told The Associated Press. She said Carriacou and Petit Martinique sustained the greatest damage, with scores of homes and businesses flattened in Carriacou.

Grenada鈥檚 prime minister, Dickon Mitchell, said Tuesday there was no power, roads are impassable and the possible rise of the death toll 鈥渞emains a grim reality.鈥�

St. Vincent and the Grenadines Prime Minister Ralph Gonsalves has promised to rebuild the archipelago. He noted that 90% of homes on Union Island were destroyed, and that 鈥渟imilar levels of devastation鈥� were expected on the islands of Myreau and Canouan.

The last strong hurricane to hit the southeast Caribbean was Hurricane Ivan 20 years ago, which killed dozens of people in Grenada.

Grenada, known as the 鈥渟pice isle,鈥� is one of the world鈥檚 top exporters of nutmeg. Mitchell noted that the bulk of the spices are grown in the northern part of the island, which was hit hardest by Beryl.

___

Mark Stevenson in Mexico City, and Coral Murphy Marcos in San Juan, Puerto Rico, contributed to this report.

John Myers Jr., The Associated Press