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Tropical Storm Melissa is projected to become a infrequent highest-level cyclone as it turns in the direction of the Caribbean island, delivering life-threatening flash flooding and landslides.

The hurricane, which had winds of up to 195 km/h as of 0600 Greenwich Mean Time, is presently veering toward the northwest in the Caribbean Sea and is expected to make landfall by midweek, as reported by meteorological authorities.

Alerts of electricity outages and damage to infrastructure have been released as Melissa generates up to 30 inches of precipitation and storm surges as high as 13ft above typical tides. "Seek shelter now," inhabitants have been urged.

This hurricane is the 13th storm in the current Atlantic storm period, which typically ends in November.

Most Intense Cyclone Risk

A highest-level hurricane is the most powerful category, with sustained winds of at least 157mph.

Even though Melissa is projected to reduce in intensity to a Category 4 hurricane before reaching the island, meteorologists said there was "minimal real distinction in the general consequences" upon making contact with land, and that the cyclone will be "equally strong" when it impacts the nation.

Critical Readiness Measures

With tropical storm-level gusts and precipitation already expected well before it crosses Jamaica's central region - possibly even the capital, Kingston - alerts state that "readiness efforts must be accelerated".

"A multi-day period of destructive gusts and heavy rainfall has started and will cause severe and deadly flash flooding and multiple rock slides," urged weather authorities.

The country's head of government Andrew Holness said: "I understand that there are countless citizens who are concerned, who are deeply troubled, and rightfully so: worry is natural.

"Yet the optimal approach to manage nervousness and any nervousness and worry is to stay ready."

Residents are being advised to fortify their houses with sandbags and plywood sheets, and to accumulate essentials.

Broader Effects

Advisories are also active for regions of the neighboring country including the capital, Port au Prince, the Dominican Republic and Cuba's eastern region, where this storm is projected to bring comparable impacts by the midweek period.

Rock slides presently generated by the hurricane have caused two deaths in Haiti, according to emergency services.

Expected Trajectory

This weather system is predicted to pass over Cuba by the middle of the week before moving through the Greater Antilles and out into the Atlantic Ocean.

By the time it makes contact with Cuba, it is predicted to have weakened to a third-level cyclone.

Weather Background

Although it is difficult to link specific storms to environmental shifts, researchers say it is causing weather phenomena more common and more intense.

Warmer oceans generate more moisture in the environment, contributing to the formation of storms.

Before the commencement of this season's Atlantic hurricane season, weather organizations forecast above-normal activity, referencing elevated ocean temperatures and likely enhanced seasonal rains around African coastal regions - where tropical systems often form.