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Cyclone Melissa is forecast to escalate to a infrequent Category 5 cyclone as it veers toward Jamaica, delivering life-threatening rapid inundation and mudslides.

The cyclone, which had wind speeds of up to 120 mph as of 6:00 AM GMT, is presently veering northwest in the Caribbean Sea and is projected to hit the coast by early next week, according to meteorological authorities.

Warnings of electricity outages and damage to infrastructure have been issued as this storm produces up to 30 inches of rainfall and coastal flooding as high as 4m above typical tides. "Take cover without delay," locals have been advised.

Melissa is the 13th hurricane in the current Atlantic season, which typically ends in November.

Most Intense Hurricane Threat

A category five hurricane is the strongest type, with sustained winds of at least 252 km/h.

Even though the hurricane is projected to reduce in intensity to a category four storm before making landfall on the island, meteorologists said there was "almost no noticeable change in the general consequences" upon landfall, and that the storm will be "just as powerful" when it strikes the island.

Immediate Preparations

With storm-force gusts and precipitation anticipated well in advance long before it passes over the island's interior - including potentially the capital, Kingston - warnings indicate that "readiness efforts must be accelerated".

"Several days of destructive gusts and torrential rain are underway and will cause severe and deadly flash flooding and many landslides," advised weather authorities.

The nation's leader Andrew Holness stated: "I realize that there are many Jamaicans who are anxious, who are extremely apprehensive, and appropriately: concern is justified.

"But the most effective method to handle anxiety and any nervousness and worry is to remain prepared."

Residents are being told to protect their properties with protective bags and plywood sheets, and to gather essentials.

Broader Effects

Warnings are also in effect for regions of Haiti encompassing the main city, Port au Prince, the Dominican Republic and the eastern part of Cuba, where this storm is anticipated to bring analogous consequences by the middle of next week.

Rock slides currently triggered by the cyclone have already killed two in Haiti, according to emergency services.

Expected Course

This weather system is forecast to cross the island nation by midweek before moving through the Antillas Mayores and out into the Atlantic.

By the moment it makes contact with Cuba, it is predicted to have weakened to a category three cyclone.

Environmental Context

While it is hard to connect specific storms to environmental shifts, scientists say it is causing meteorological events more prevalent and more severe.

Increased sea temperatures generate more moisture in the atmosphere, contributing to the creation of hurricanes.

Prior to the commencement of this year's Atlantic storm period, climate agencies forecast higher-than-average occurrence, citing warmer seas and potential enhanced seasonal rains around African coastal regions - where tropical systems often form.