Melissa is forecast to make landfall on the island on Tuesday and cross Cuba and the Bahamas through Wednesday.

Early Monday, Melissa was centered about 135 miles (220 kilometers) southwest of Kingston, Jamaica, and about 320 miles (515 kilometers) southwest of Guantánamo, Cuba, the U.S. National Hurricane Center in Miami said.

The hurricane had maximum sustained winds of 160 mph (260 kph) and was moving west at 3 mph (5 kph), the center said.

Category 5 is the highest on the Saffir-Simpson scale with sustained winds exceeding 157 mph (250 kph). Hurricane Melissa is the strongest hurricane in recent history, forecast to directly hit the small Caribbean nation.

“Do not venture out of your safe shelter,” the National Hurricane Center warned.

Some areas in eastern Jamaica could see up to 40 inches (1 meter) of rain while western Haiti could get 16 inches (40 centimeters), according to the hurricane center. “Catastrophic flash flooding and numerous landslides are likely,” it warned.

Mandatory evacuations were ordered in seven flood-prone communities in Jamaica, with buses ferrying people to safe shelter.

The slow-moving storm has killed at least three people in Haiti and a fourth person in the Dominican Republic, where another person remains missing.

“I want to urge Jamaicans to take this seriously,” said Desmond McKenzie, deputy chairman of Jamaica’s Disaster Risk Management Council. “Do not gamble with Melissa. It’s not a safe bet.”

The hurricane was expected to make another landfall later Tuesday in eastern Cuba. A hurricane warning was in effect for Granma, Santiago de Cuba, Guantánamo, and Holguin provinces, while a tropical storm warning was in effect for Las Tunas. Up to 20 inches (51 centimeters) of rain were forecast for parts of Cuba, along with a significant storm surge along the coast.

A tropical storm warning also remained in effect for Haiti.

Melissa could be the strongest hurricane Jamaica has experienced in decades, said Evan Thompson, principal director at Jamaica’s meteorological service. He warned that cleanup and damage assessment would be severely delayed because of anticipated landslides, flooding, and blocked roads.

It would be the first time in recent history that a storm of Category 4 or higher makes landfall in Jamaica, Thompson said.

Melissa could be the strongest hurricane Jamaica has experienced in decades, said Evan Thompson, principal director at Jamaica’s meteorological service. He warned that cleanup and damage assessment would be severely delayed because of anticipated landslides, flooding, and blocked roads.

He noted that Hurricane Gilbert was a Category 3 storm when it hit the island in 1988. Hurricanes Ivan and Beryl were both Category 4, but they did not make landfall, Thompson said.

In addition to the rainfall, Melissa is likely to cause a life-threatening storm surge on Jamaica’s southern coast, peaking around 13 feet (4 meters) above ground level, near and to the east of where the center of Melissa makes landfall, the U.S. center said.

“Don’t make foolish decisions,” warned Daryl Vaz, Jamaica’s transport minister. “We are in a very, very serious time over the next few days.”

The storm has already dropped heavy rain in the Dominican Republic, where schools and government offices were ordered to remain closed on Monday in four of nine provinces still under red alert.

Melissa damaged more than 750 homes across the country, displacing more than 3,760 people. Floodwaters have also cut access to at least 48 communities, officials said.

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