Cyclone the storm is forecast to become a rare highest-level hurricane as it turns toward Jamaica, causing dangerous rapid inundation and rock falls.
This weather system, which registered winds of up to 120 mph as of 0600 Greenwich Mean Time, is presently veering north-west in the Caribbean region and is expected to reach land by midweek, based on data from meteorological authorities.
Advisories of electricity outages and damage to infrastructure have been issued as Melissa produces up to 30 inches of rain and coastal flooding as high as 13ft above typical tides. "Find safe refuge immediately," residents have been urged.
This hurricane is the thirteenth storm in this year's Atlantic hurricane season, which typically ends in November.
A highest-level storm is the most intense classification, with winds of at least 252 km/h.
While the hurricane is projected to diminish in strength to a fourth-level cyclone before making landfall on the island, experts 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 strikes the nation.
With storm-force winds and rain already expected well before it passes over Jamaica's central region - including potentially the city of Kingston - warnings indicate that "safety measures need to be finalized quickly".
"An extended timeframe of damaging winds and intense precipitation are underway and will cause severe and deadly flash flooding and numerous mudslides," advised meteorological officials.
The country's head of government the statesman said: "I know that there are numerous residents who are concerned, who are deeply troubled, and with good reason: worry is natural.
"However the best way to manage anxiety and any unease and concern is to stay ready."
Inhabitants are being told to secure their homes with sand barriers and plywood sheets, and to accumulate basic necessities.
Warnings are also active for regions of Haiti including the capital, Port au Prince, the Dominican Republic and eastern Cuba, where this storm is projected to bring analogous consequences by the midweek period.
Landslides already being caused by the storm have resulted in two fatalities in the country, according to the nation's Civil Protection agency.
This weather system is forecast to cross Cuba by Wednesday before traveling via the Caribbean archipelago and emerging into the open ocean.
By the point it reaches the Caribbean nation, it is anticipated to have diminished to a category three hurricane.
Although it is challenging to link specific storms to environmental shifts, scientists say it is resulting in climate patterns more common and more intense.
Warmer oceans generate additional humidity in the atmosphere, aiding in the development of tropical cyclones.
Before the start of the current Atlantic storm period, weather organizations projected higher-than-average occurrence, citing warmer seas and potential stronger monsoon activity around West Africa - where hurricanes frequently develop.
Lena Hoffmann is a seasoned journalist with a passion for uncovering stories that matter, specializing in German current affairs and digital media trends.
