Tropical Storm Melissa is forecast to escalate to a uncommon Category 5 cyclone as it shifts in the direction of the Caribbean island, delivering life-threatening flash flooding and landslides.
The cyclone, which registered wind speeds of up to 120 mph as of 06:00 GMT, is now shifting northwest in the Caribbean and is expected to hit the coast by midweek, based on data from meteorological authorities.
Warnings of blackouts and structural damage have been issued as Melissa brings up to 76cm of rain and sea level surges as high as thirteen feet above normal levels. "Find safe refuge immediately," locals have been advised.
Melissa is the 13th hurricane in this year's Atlantic storm period, which normally finishes in the eleventh month.
A highest-level hurricane is the strongest type, with winds of at least 157mph.
While this storm is projected to weaken to a category four hurricane before reaching the island, authorities said there was "minimal real distinction in the total effects" upon reaching the coast, and that the hurricane will be "equally strong" when it strikes the country.
With tropical storm-strength winds and rain predicted to begin well before it crosses Jamaica's central region - including potentially the city of Kingston - warnings indicate that "readiness efforts must be accelerated".
"An extended timeframe of destructive gusts and torrential rain has started and will cause catastrophic and life-threatening rapid water accumulation and many rock slides," counseled climate experts.
The nation's leader Andrew Holness commented: "I realize that there are many Jamaicans who are concerned, who are very concerned, and with good reason: concern is justified.
"But the most effective method to handle anxiety and any nervousness and anxiety is to stay ready."
Inhabitants are being advised to protect their properties with protective bags and wooden boards, and to accumulate basic necessities.
Alerts are also active for areas in Haiti such as the capital, Port au Prince, the adjacent nation and Cuba's eastern region, where Melissa is expected to bring analogous consequences by the middle portion of the coming week.
Mudslides already being caused by the hurricane have caused two deaths in Haiti, according to local authorities.
The hurricane is predicted to cross Cuba by Wednesday before passing across the Antillas Mayores and emerging into the Atlantic Ocean.
By the point it makes contact with Cuba, it is anticipated to have reduced to a Category 3 storm.
Even though it is challenging to connect particular meteorological occurrences to global warming, researchers say it is making meteorological events more prevalent and more intense.
Higher ocean heat produce greater water vapor in the air, helping fuel the development of storms.
Prior to the commencement of the current Atlantic storm period, climate agencies forecast higher-than-average occurrence, referencing elevated ocean temperatures and potential more intense weather patterns around West Africa - where tropical systems often form.
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