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Hurricane Melissa is forecast to escalate to a uncommon Category 5 cyclone as it veers towards the Caribbean island, causing life-threatening rapid inundation and rock falls.

The hurricane, which registered wind speeds of up to 195 km/h as of 0600 Greenwich Mean Time, is currently turning toward the northwest in the Caribbean Sea and is anticipated to make landfall by early next week, according to weather experts.

Warnings of blackouts and structural damage have been announced as Melissa produces up to 30 inches of rain and coastal flooding as high as 4m above normal levels. "Take cover without delay," locals have been urged.

This hurricane is the thirteenth hurricane in the current Atlantic season, which typically ends in late autumn.

Category Five Cyclone Danger

A Category 5 cyclone is the most powerful category, with winds of at least 252 km/h.

Although this storm is set to weaken to a Category 4 storm before making landfall on the island, experts said there was "minimal real distinction in the total effects" upon making contact with land, and that the storm will be "just as powerful" when it strikes the country.

Urgent Readiness Measures

With tropical storm-level gusts and precipitation predicted to begin ahead of it moves across Jamaica's central region - perhaps encompassing the national capital - alerts indicate that "preparations should be rushed to completion".

"A multi-day period of damaging winds and heavy rainfall are underway and will cause devastating and dangerous flash flooding and many mudslides," urged climate experts.

The nation's leader Andrew Holness commented: "I understand that there are many Jamaicans who are anxious, who are very concerned, and with good reason: concern is justified.

"Yet the best way to manage anxiety and any apprehension and concern is to remain prepared."

Residents are being advised to protect their properties with sandbags and plywood sheets, and to gather basic necessities.

Regional Impact

Warnings are also ongoing for parts of Haiti encompassing the capital, Port au Prince, the neighboring country and Cuba's eastern region, where this storm is projected to bring analogous consequences by the middle of next week.

Mudslides already being caused by the storm have caused two deaths in Haiti, according to the nation's Civil Protection agency.

Projected Course

Melissa is forecast to cross the island nation by midweek before moving through the Caribbean archipelago and emerging into the Atlantic.

By the point it makes contact with Cuba, it is forecast to have diminished to a third-level storm.

Environmental Background

Even though it is challenging to link individual weather events to global warming, scientists say it is causing meteorological events more common and more severe.

Higher ocean heat generate greater water vapor in the environment, contributing to the creation of storms.

Prior to the commencement of this year's Caribbean cyclone season, meteorological authorities predicted above-normal activity, mentioning heated marine conditions and possible stronger monsoon activity around West Africa - where Atlantic storms often form.