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Cyclone Melissa is forecast to escalate to a infrequent highest-level hurricane as it veers toward the Caribbean island, bringing life-threatening rapid inundation and rock falls.

The hurricane, which registered winds of up to 120 mph as of 06:00 GMT, is presently veering northwest in the Caribbean region and is anticipated to reach land by early next week, according to hurricane specialists.

Advisories of blackouts and disruption to utilities have been released as the hurricane brings up to 76cm of rainfall and coastal flooding as high as 4m above typical tides. "Take cover without delay," locals have been urged.

Melissa is the thirteenth hurricane in the current Atlantic storm period, which typically ends in late autumn.

Highest-Level Cyclone Risk

A Category 5 storm is the most intense classification, with sustained winds of at least 157mph.

While this storm is expected to reduce in intensity to a category four storm before making landfall on Jamaica, meteorologists said there was "almost no noticeable change in the overall impacts" upon making contact with land, and that the hurricane will be "at least that intensity" when it hits the island.

Immediate Preparations

With tropical storm-strength winds and rain already expected ahead of it crosses central Jamaica - possibly even the capital, Kingston - alerts state that "safety measures need to be finalized quickly".

"A multi-day period of damaging winds and heavy rainfall have begun and will cause catastrophic and life-threatening flash flooding and numerous mudslides," urged meteorological officials.

The country's head of government the statesman said: "I know that there are many Jamaicans who are worried, who are deeply troubled, and appropriately: concern is justified.

"But the optimal approach to address nervousness and any apprehension and concern is to be prepared."

Locals are being told to secure their homes with protective bags and wooden boards, and to accumulate basic necessities.

Wider Consequences

Alerts are also active for parts of Haiti encompassing the main city, Port au Prince, the Dominican Republic and Cuba's eastern region, where this storm is expected to bring comparable impacts by the middle portion of the coming week.

Landslides currently triggered by the storm have already killed two in the country, according to emergency services.

Expected Course

The hurricane is forecast to pass over the island nation by Wednesday before traveling via the Caribbean archipelago and emerging into the Atlantic Ocean.

By the moment it reaches the Caribbean nation, it is predicted to have weakened to a third-level cyclone.

Climate Connection

While it is hard to connect individual weather events to environmental shifts, researchers say it is resulting in climate patterns more prevalent and more extreme.

Higher ocean heat generate greater water vapor in the air, contributing to the formation of hurricanes.

Ahead of the beginning of this season's Caribbean cyclone season, climate agencies forecast higher-than-average occurrence, referencing heated marine conditions and possible stronger monsoon activity around West Africa - where Atlantic storms typically originate.