Cyclone the storm is forecast to become a uncommon highest-level hurricane as it shifts in the direction of 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 currently turning north-west in the Caribbean Sea and is projected to hit the coast by Tuesday, according to meteorological authorities.
Warnings of blackouts and disruption to utilities have been released as Melissa produces up to 30 inches of precipitation and sea level surges as high as thirteen feet above normal levels. "Take cover without delay," residents have been advised.
Melissa is the thirteenth storm in the current Atlantic storm period, which typically ends in late autumn.
A highest-level hurricane is the strongest type, with wind speeds of at least 252 km/h.
Although this storm is set to diminish in strength to a fourth-level storm before making landfall on Jamaica, meteorologists said there was "very little practical difference in the overall impacts" upon reaching the coast, and that the hurricane will be "at least that intensity" when it impacts the nation.
With tropical storm-level wind and rainfall anticipated well in advance ahead of it moves across central Jamaica - including potentially the city of Kingston - advisories state that "readiness efforts must be accelerated".
"Several days of destructive gusts and heavy rainfall have begun and will cause catastrophic and life-threatening flash flooding and numerous landslides," counseled weather authorities.
The nation's leader the statesman commented: "I realize that there are countless citizens who are worried, who are deeply troubled, and with good reason: concern is justified.
"However the most effective method to handle worry and any apprehension and anxiety is to be prepared."
Inhabitants are being told to fortify their houses with sandbags and plywood sheets, and to stock up on basic necessities.
Alerts are also in effect for parts of the neighboring country such as the main city, Port au Prince, the Dominican Republic and Cuba's eastern region, where Melissa is anticipated to bring comparable impacts by the middle portion of the coming week.
Rock slides presently generated by the cyclone have caused two deaths in the country, according to local authorities.
This weather system is predicted to cross Cuba by the middle of the week before passing across the Greater Antilles and entering the open ocean.
By the point it makes contact with the Caribbean nation, it is anticipated to have diminished to a third-level hurricane.
Although it is difficult to connect particular meteorological occurrences to environmental shifts, experts say it is causing meteorological events increasingly frequent and more intense.
Warmer oceans create greater water vapor in the environment, aiding in the development of storms.
Prior to the commencement of the current Caribbean cyclone season, weather organizations predicted higher-than-average occurrence, mentioning warmer seas and potential enhanced seasonal rains around the western African continent - where hurricanes typically originate.
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