Cyclone Melissa is forecast to escalate to a infrequent highest-level cyclone as it veers toward the Caribbean island, delivering deadly sudden floods and mudslides.
The hurricane, which registered wind speeds of up to 120 mph as of 6:00 AM GMT, is presently veering north-west in the Caribbean and is expected to make landfall by Tuesday, as reported by meteorological authorities.
Warnings of blackouts and structural damage have been announced as the hurricane generates up to 30 inches of rainfall and storm surges as high as 13ft above ground. "Find safe refuge immediately," locals have been advised.
Melissa is the 13th named storm in the current Atlantic storm period, which usually concludes in November.
A category five storm is the most powerful category, with winds of at least 157 miles per hour.
Even though the hurricane is expected to reduce in intensity to a fourth-level storm before arriving at the island, meteorologists said there was "almost no noticeable change in the total effects" upon reaching the coast, and that the hurricane will be "equally strong" when it impacts the nation.
With storm-force gusts and precipitation already expected long before it moves across central Jamaica - perhaps encompassing the capital, Kingston - warnings state that "safety measures need to be finalized quickly".
"A multi-day period of harmful winds and intense precipitation are underway and will cause catastrophic and life-threatening flash flooding and many rock slides," counseled weather authorities.
Jamaican Prime Minister Andrew Holness said: "I know that there are many Jamaicans who are anxious, who are very concerned, and with good reason: concern is justified.
"Yet the optimal approach to manage anxiety and any apprehension and anxiety is to remain prepared."
Inhabitants are being instructed to secure their homes with protective bags and timber panels, and to stock up on basic necessities.
Warnings are also in effect for parts of Haiti including the capital, Port au Prince, the adjacent nation and eastern Cuba, where Melissa is expected to bring analogous consequences by the middle portion of the coming week.
Rock slides already being caused by the storm have resulted in two fatalities in the country, according to local authorities.
This weather system is forecast to cross Cuba by the middle of the week before passing across the Antillas Mayores and out into the open ocean.
By the time it arrives at Cuba, it is predicted to have weakened to a third-level cyclone.
Even though it is difficult to connect individual weather events to global warming, experts say it is resulting in weather phenomena more prevalent and more intense.
Warmer oceans produce more moisture in the air, helping fuel the formation of tropical cyclones.
Ahead of the start of this year's Atlantic storm period, meteorological authorities projected increased storm frequency, citing heated marine conditions and potential more intense weather patterns around the western African continent - where tropical systems frequently develop.
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