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Tropical Storm the storm is projected to strengthen into a infrequent Category 5 storm as it shifts in the direction of Jamaica, delivering deadly flash flooding and rock falls.

This weather system, which registered winds of up to 120 mph as of 6:00 AM GMT, is currently turning northwest in the Caribbean and is projected to hit the coast by early next week, based on data from meteorological authorities.

Warnings of blackouts and structural damage have been announced as Melissa generates up to 76cm of rain and sea level surges as high as 13ft above normal levels. "Seek shelter now," locals have been urged.

This hurricane is the 13th storm in the ongoing Atlantic storm period, which typically ends in late autumn.

Most Intense Storm Risk

A category five cyclone is the most intense classification, with winds of at least 157mph.

Even though Melissa is set to diminish in strength to a Category 4 storm before making landfall on the island, meteorologists said there was "very little practical difference in the total effects" upon reaching the coast, and that the storm will be "at least that intensity" when it hits the island.

Urgent Safety Steps

With tropical storm-level wind and rainfall predicted to begin ahead of it moves across the island's interior - including potentially the capital, Kingston - warnings indicate that "readiness efforts must be accelerated".

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

Jamaican Prime Minister the statesman commented: "I understand that there are countless citizens who are concerned, who are extremely apprehensive, and with good reason: you should be concerned.

"However the optimal approach to address nervousness and any nervousness and concern is to be prepared."

Residents are being told to fortify their houses with sand barriers and wooden boards, and to stock up on essentials.

Wider Impact

Advisories are also active for areas in the neighboring country including the main city, Port au Prince, the adjacent nation and Cuba's eastern region, where Melissa is anticipated to bring similar effects by the middle of next week.

Rock slides currently triggered by the storm have caused two deaths in the country, according to local authorities.

Future Path

The hurricane is forecast to cross the island nation by the middle of the week before traveling via the Greater Antilles and out into the Atlantic Ocean.

By the time it reaches Cuba, it is forecast to have diminished to a Category 3 hurricane.

Environmental Background

While it is difficult to associate specific storms to environmental shifts, researchers say it is resulting in meteorological events more prevalent and more severe.

Warmer oceans generate greater water vapor in the environment, helping fuel the formation of storms.

Prior to the beginning of this season's Atlantic storm period, climate agencies predicted increased storm frequency, mentioning elevated ocean temperatures and possible enhanced seasonal rains around the western African continent - where Atlantic storms frequently develop.