Tropical Storm Melissa is predicted to strengthen into a uncommon highest-level storm as it veers towards Jamaica, causing life-threatening rapid inundation and rock falls.
This weather system, which registered winds of up to 120 miles per hour as of 06:00 GMT, is now shifting northwest in the Caribbean Sea and is projected to make landfall by early next week, based on data from weather experts.
Alerts of power cuts and disruption to utilities have been issued as this storm produces up to 76cm of rainfall and coastal flooding as high as 13ft above typical tides. "Take cover without delay," residents have been urged.
The cyclone is the 13th named hurricane in the current Atlantic season, which usually concludes in the eleventh month.
A highest-level hurricane is the strongest type, with wind speeds of at least 252 km/h.
Although Melissa is projected to weaken to a category four cyclone before arriving at the island, meteorologists said there was "minimal real distinction in the overall impacts" upon reaching the coast, and that the cyclone will be "equally strong" when it hits the island.
With tropical storm-level wind and rainfall predicted to begin well before it crosses Jamaica's central region - possibly even the capital, Kingston - advisories indicate that "readiness efforts must be accelerated".
"A multi-day period of damaging winds and torrential rain are underway and will cause severe and deadly rapid water accumulation and many mudslides," urged climate experts.
The country's head of government the official stated: "I know that there are many Jamaicans who are anxious, who are deeply troubled, and with good reason: you should be concerned.
"Yet the most effective method to handle worry and any nervousness and worry is to stay ready."
Residents are being instructed to secure their homes with sand barriers and timber panels, and to stock up on essentials.
Alerts are also active for areas in Haiti including the primary urban center, the neighboring country and the eastern part of Cuba, where Melissa is expected to bring comparable impacts by the midweek period.
Mudslides already being caused by the hurricane have already killed two in Haiti, according to the nation's Civil Protection agency.
This weather system is forecast to pass over the island nation by midweek before moving through the Antillas Mayores and out into the open ocean.
By the point it makes contact with Cuba, it is predicted to have reduced to a Category 3 hurricane.
Even though it is hard to link specific storms to environmental shifts, scientists say it is causing meteorological events more common and more intense.
Increased sea temperatures generate greater water vapor in the atmosphere, contributing to the development of storms.
Prior to the beginning of this year's Atlantic storm period, climate agencies predicted higher-than-average occurrence, citing heated marine conditions and possible stronger monsoon activity around the western African continent - where tropical systems often form.
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