Hurricane Melissa is predicted to escalate to a rare highest-level storm as it shifts toward Jamaica, causing deadly rapid inundation and rock falls.
The hurricane, which registered winds of up to 120 miles per hour as of 6:00 AM GMT, is currently turning northwest in the Caribbean region and is anticipated to hit the coast by early next week, as reported by meteorological authorities.
Advisories of power cuts and damage to infrastructure have been issued as Melissa brings up to 76cm of precipitation and storm surges as high as 13ft above ground. "Seek shelter now," inhabitants have been told.
This hurricane is the 13th storm in the current Atlantic hurricane season, which normally finishes in late autumn.
A highest-level cyclone is the strongest type, with sustained winds of at least 252 km/h.
Although Melissa is expected to weaken to a fourth-level cyclone before reaching Jamaica, authorities said there was "minimal real distinction in the overall impacts" upon reaching the coast, and that the hurricane will be "just as powerful" when it strikes the nation.
With storm-force wind and rainfall already expected ahead of it moves across the island's interior - including potentially the capital, Kingston - advisories indicate that "readiness efforts must be accelerated".
"Several days of harmful winds and heavy rainfall have begun and will cause catastrophic and life-threatening rapid water accumulation and multiple landslides," advised climate experts.
The country's head of government Andrew Holness commented: "I know that there are many Jamaicans who are worried, who are extremely apprehensive, and rightfully so: worry is natural.
"But the most effective method to manage nervousness and any apprehension and worry is to stay ready."
Inhabitants are being told to secure their homes with sand barriers and plywood sheets, and to accumulate basic necessities.
Alerts are also ongoing for regions of the neighboring country such as the capital, Port au Prince, the adjacent nation and Cuba's eastern region, where Melissa is projected to bring comparable impacts by the midweek period.
Rock slides already being caused by the storm have already killed two in Haiti, according to the nation's Civil Protection agency.
The hurricane is predicted to pass over Cuba by Wednesday before moving through the Antillas Mayores and entering the Atlantic Ocean.
By the moment it makes contact with Cuba, it is anticipated to have diminished to a third-level storm.
Even though it is difficult to link individual weather events to global warming, researchers say it is resulting in weather phenomena more common and more extreme.
Increased sea temperatures produce additional humidity in the atmosphere, aiding in the creation of hurricanes.
Before the start of the current Atlantic storm period, climate agencies forecast higher-than-average occurrence, citing elevated ocean temperatures and possible enhanced seasonal rains around African coastal regions - where tropical systems typically originate.