Cyclone the storm is projected to escalate to a rare Category 5 cyclone as it veers toward the Caribbean island, causing life-threatening rapid inundation and mudslides.
The cyclone, which registered wind speeds of up to 120 miles per hour as of 0600 Greenwich Mean Time, is currently turning north-west in the Caribbean Sea and is anticipated to make landfall by early next week, based on data from hurricane specialists.
Alerts of electricity outages and structural damage have been announced as Melissa produces up to 76cm of rainfall and sea level surges as high as thirteen feet above ground. "Seek shelter now," locals have been advised.
Melissa is the 13th named hurricane in this year's Atlantic storm period, which typically ends in November.
A highest-level hurricane is the most powerful category, with winds of at least 157 miles per hour.
Although this storm is set to weaken to a Category 4 cyclone before arriving at the island, meteorologists said there was "almost no noticeable change in the overall impacts" upon reaching the coast, and that the storm will be "equally strong" when it hits the country.
With storm-force wind and rainfall predicted to begin ahead of it crosses Jamaica's central region - including potentially the city of Kingston - alerts state that "safety measures need to be finalized quickly".
"An extended timeframe of damaging winds and intense precipitation are underway and will cause devastating and dangerous sudden floods and numerous landslides," urged weather authorities.
Jamaican Prime Minister the official stated: "I understand that there are numerous residents who are concerned, who are very concerned, and with good reason: you should be concerned.
"However the best way to handle anxiety and any nervousness and concern is to be prepared."
Locals are being advised to protect their properties with sand barriers and wooden boards, and to accumulate basic necessities.
Warnings are also active for parts of Haiti such as the main city, Port au Prince, the Dominican Republic and eastern Cuba, where the hurricane is projected to bring similar effects by the middle of next week.
Rock slides already being caused by the hurricane have resulted in two fatalities in the country, according to the nation's Civil Protection agency.
Melissa is predicted to move across the island nation by midweek before moving through the Antillas Mayores and emerging into the Atlantic Ocean.
By the time it reaches the Caribbean nation, it is forecast to have reduced to a Category 3 hurricane.
Even though it is difficult to connect particular meteorological occurrences to environmental shifts, scientists say it is making climate patterns more common and more severe.
Warmer oceans create more moisture in the atmosphere, helping fuel the creation of hurricanes.
Prior to the beginning of the current Caribbean cyclone season, meteorological authorities predicted increased storm frequency, referencing heated marine conditions and likely more intense weather patterns around African coastal regions - where tropical systems typically originate.
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