Cyclone Melissa is projected to strengthen into a uncommon category five cyclone as it veers towards the Caribbean island, bringing deadly rapid inundation and landslides.
The hurricane, which registered winds of up to 120 miles per hour as of 6:00 AM GMT, is now shifting northwest in the Caribbean Sea and is projected to reach land by midweek, based on data from weather experts.
Alerts of blackouts and damage to infrastructure have been announced as this storm generates up to 30 inches of precipitation and storm surges as high as 4m above normal levels. "Take cover without delay," inhabitants have been advised.
This hurricane is the thirteenth cyclone in this year's Atlantic season, which usually concludes in the eleventh month.
A category five hurricane is the strongest type, with wind speeds of at least 157mph.
Although this storm is projected to weaken to a fourth-level cyclone before making landfall on the island, authorities said there was "minimal real distinction in the overall impacts" upon making contact with land, and that the storm will be "equally strong" when it strikes the nation.
With tropical storm-strength winds and rain predicted to begin long before it passes over Jamaica's central region - including potentially the capital, Kingston - warnings indicate that "readiness efforts must be accelerated".
"An extended timeframe of destructive gusts and intense precipitation are underway and will cause catastrophic and life-threatening flash flooding and multiple mudslides," urged weather authorities.
The nation's leader the official commented: "I know that there are numerous residents who are concerned, who are extremely apprehensive, and appropriately: concern is justified.
"However the optimal approach to manage anxiety and any unease and worry is to remain prepared."
Residents are being advised to secure their homes with protective bags and wooden boards, and to stock up on necessary supplies.
Alerts are also active for areas in Haiti encompassing the capital, Port au Prince, the adjacent nation and eastern Cuba, where Melissa is expected to bring comparable impacts by the middle portion of the coming week.
Mudslides already being caused by the storm have resulted in two fatalities in Haiti, according to the nation's Civil Protection agency.
The hurricane is projected to pass over Cuba by the middle of the week before passing across the Antillas Mayores and entering the Atlantic Ocean.
By the moment it reaches Cuba, it is forecast to have diminished to a Category 3 storm.
While it is hard to link particular meteorological occurrences to global warming, experts say it is making weather phenomena more prevalent and more extreme.
Increased sea temperatures produce more moisture in the air, helping fuel the creation of storms.
Prior to the commencement of this year's Caribbean cyclone season, meteorological authorities forecast above-normal activity, referencing heated marine conditions and likely stronger monsoon activity around West Africa - where Atlantic storms frequently develop.
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