Cyclone the storm is forecast to escalate to a uncommon Category 5 hurricane as it shifts toward Jamaica, causing deadly flash flooding and mudslides.
This weather system, which recorded wind speeds of up to 195 km/h as of 0600 Greenwich Mean Time, is presently veering northwest in the Caribbean region and is projected to make landfall by Tuesday, as reported by hurricane specialists.
Alerts of electricity outages and disruption to utilities have been announced as Melissa produces up to thirty inches of rainfall and coastal flooding as high as 4m above normal levels. "Take cover without delay," inhabitants have been told.
Melissa is the thirteenth storm in the current Atlantic season, which usually concludes in November.
A category five storm is the most intense classification, with sustained winds of at least 252 km/h.
Although the hurricane is expected to reduce in intensity to a fourth-level storm before arriving at the island, authorities said there was "very little practical difference in the overall impacts" upon reaching the coast, and that the cyclone will be "at least that intensity" when it impacts the country.
With storm-force gusts and precipitation anticipated well in advance well before it moves across Jamaica's central region - including potentially the city of Kingston - alerts emphasize that "preparations should be rushed to completion".
"A multi-day period of damaging winds and heavy rainfall has started and will cause catastrophic and life-threatening flash flooding and many mudslides," urged weather authorities.
The nation's leader the statesman said: "I know that there are countless citizens who are anxious, who are very concerned, and appropriately: you should be concerned.
"But the best way to manage nervousness and any apprehension and anxiety is to stay ready."
Inhabitants are being advised to secure their homes with protective bags and timber panels, and to accumulate essentials.
Alerts are also in effect for parts of the neighboring country including the main city, Port au Prince, the Dominican Republic and eastern Cuba, where Melissa is projected to bring comparable impacts by the midweek period.
Rock slides presently generated by the cyclone have resulted in two fatalities in the country, according to local authorities.
Melissa is predicted to move across the island nation by midweek before passing across the Caribbean archipelago and entering the Atlantic.
By the time it makes contact with the Caribbean nation, it is forecast to have weakened to a category three hurricane.
While it is challenging to connect specific storms to global warming, researchers say it is resulting in meteorological events more common and more severe.
Warmer oceans produce more moisture in the atmosphere, contributing to the formation of tropical cyclones.
Ahead of the commencement of the current Atlantic hurricane season, weather organizations forecast increased storm frequency, referencing heated marine conditions and likely stronger monsoon activity around African coastal regions - where Atlantic storms typically originate.
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