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Cyclone Melissa is forecast to escalate to a infrequent highest-level cyclone as it turns toward the Caribbean island, delivering dangerous sudden floods and landslides.

The hurricane, which had wind speeds of up to 120 miles per hour as of 06:00 GMT, is presently veering northwest in the Caribbean Sea and is expected to make landfall by midweek, according to weather experts.

Advisories of power cuts and structural damage have been announced as Melissa generates up to thirty inches of rainfall and storm surges as high as 13ft above normal levels. "Take cover without delay," inhabitants have been told.

Melissa is the 13th named hurricane in the ongoing Atlantic season, which usually concludes in November.

Most Intense Cyclone Risk

A highest-level storm is the most intense classification, with sustained winds of at least 252 km/h.

While this storm is set to diminish in strength to a Category 4 storm before reaching Jamaica, experts said there was "almost no noticeable change in the overall impacts" upon landfall, and that the hurricane will be "equally strong" when it strikes the nation.

Critical Readiness Measures

With tropical storm-strength gusts and precipitation anticipated well in advance well before it passes over Jamaica's central region - including potentially the city of Kingston - alerts emphasize that "preparations should be rushed to completion".

"A multi-day period of harmful winds and torrential rain has started and will cause severe and deadly rapid water accumulation and numerous rock slides," counseled meteorological officials.

The country's head of government the official said: "I understand that there are many Jamaicans who are worried, who are deeply troubled, and with good reason: concern is justified.

"But the most effective method to address anxiety and any unease and worry is to remain prepared."

Inhabitants are being instructed to protect their properties with sandbags and wooden boards, and to accumulate basic necessities.

Regional Effects

Warnings are also ongoing for parts of the neighboring country encompassing the main city, Port au Prince, the Dominican Republic and Cuba's eastern region, where the hurricane is anticipated to bring comparable impacts by the midweek period.

Landslides currently triggered by the cyclone have caused two deaths in the country, according to the nation's Civil Protection agency.

Expected Course

Melissa is forecast to move across the island nation by the middle of the week before passing across the Greater Antilles and out into the open ocean.

By the moment it makes contact with the Caribbean nation, it is predicted to have diminished to a category three storm.

Climate Context

Even though it is hard to link particular meteorological occurrences to environmental shifts, experts say it is resulting in climate patterns increasingly frequent and more intense.

Increased sea temperatures produce greater water vapor in the environment, helping fuel the development of storms.

Before the start of the current Atlantic hurricane season, climate agencies projected above-normal activity, mentioning elevated ocean temperatures and likely enhanced seasonal rains around West Africa - where tropical systems typically originate.