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Tropical Storm the storm is forecast to strengthen into a rare category five cyclone as it veers in the direction of the Caribbean island, delivering deadly rapid inundation and rock falls.

The hurricane, which registered wind speeds of up to 120 mph as of 06:00 GMT, is presently veering northwest in the Caribbean and is expected to reach land by Tuesday, according to weather experts.

Warnings of blackouts and disruption to utilities have been announced as Melissa produces up to 30 inches of rainfall and coastal flooding as high as 13ft above normal levels. "Take cover without delay," residents have been urged.

Melissa is the 13th named cyclone in this year's Atlantic hurricane season, which usually concludes in November.

Highest-Level Hurricane Threat

A category five storm is the most powerful category, with winds of at least 252 km/h.

Although this storm is set to diminish in strength to a Category 4 cyclone before reaching Jamaica, authorities said there was "minimal real distinction in the total effects" upon landfall, and that the hurricane will be "just as powerful" when it strikes the country.

Critical Preparations

With storm-force winds and rain anticipated well in advance long before it passes over Jamaica's central region - perhaps encompassing the national capital - alerts emphasize that "preparations should be rushed to completion".

"An extended timeframe of harmful winds and heavy rainfall have begun and will cause severe and deadly sudden floods and numerous landslides," counseled weather authorities.

The nation's leader Andrew Holness stated: "I know that there are numerous residents who are anxious, who are deeply troubled, and with good reason: concern is justified.

"However the best way to manage worry and any apprehension and worry is to be prepared."

Locals are being advised to protect their properties with protective bags and plywood sheets, and to stock up on essentials.

Wider Effects

Warnings are also in effect for parts of Haiti encompassing the main city, Port au Prince, the Dominican Republic and the eastern part of Cuba, where the hurricane is expected to bring similar effects by the midweek period.

Rock slides already being caused by the hurricane have already killed two in Haiti, according to the nation's Civil Protection agency.

Expected Course

This weather system is forecast to move across the island nation by the middle of the week before traveling via the Caribbean archipelago and entering the open ocean.

By the point it reaches the Caribbean nation, it is forecast to have diminished to a category three storm.

Climate Context

While it is challenging to connect particular meteorological occurrences to global warming, scientists say it is resulting in meteorological events more prevalent and more extreme.

Higher ocean heat generate more moisture in the environment, helping fuel the formation of storms.

Prior to the beginning of the current Atlantic hurricane season, climate agencies projected increased storm frequency, mentioning heated marine conditions and likely enhanced seasonal rains around West Africa - where hurricanes often form.