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Tropical Storm Melissa is projected to escalate to a rare highest-level hurricane as it shifts toward Jamaica, delivering deadly flash flooding and mudslides.

The hurricane, which recorded winds of up to 195 km/h as of 0600 Greenwich Mean Time, is presently veering northwest in the Caribbean and is anticipated to hit the coast by midweek, according to meteorological authorities.

Advisories of electricity outages and damage to infrastructure have been released as Melissa brings up to 76cm of rain and coastal flooding as high as 13ft above ground. "Take cover without delay," residents have been urged.

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

Most Intense Cyclone Danger

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

Even though Melissa is projected to reduce in intensity to a Category 4 hurricane before arriving at Jamaica, authorities said there was "almost no noticeable change in the general consequences" upon reaching the coast, and that the hurricane will be "at least that intensity" when it strikes the country.

Critical Readiness Measures

With tropical storm-strength wind and rainfall already expected ahead of it moves across the island's interior - perhaps encompassing the city of Kingston - advisories indicate that "safety measures need to be finalized quickly".

"An extended timeframe of damaging winds and heavy rainfall are underway and will cause devastating and dangerous rapid water accumulation and multiple landslides," advised climate experts.

Jamaican Prime Minister the statesman said: "I realize that there are countless citizens who are worried, who are very concerned, and appropriately: concern is justified.

"Yet the best way to manage worry and any unease and concern is to be prepared."

Locals are being instructed to secure their homes with sand barriers and plywood sheets, and to accumulate necessary supplies.

Wider Impact

Alerts are also in effect for regions of Haiti including the primary urban center, the neighboring country and the eastern part of Cuba, where the hurricane is expected to bring comparable impacts by the middle of next week.

Mudslides currently triggered by the storm have resulted in two fatalities in Haiti, according to the nation's Civil Protection agency.

Projected Trajectory

The hurricane is projected to cross Cuba by midweek before traveling via the Caribbean archipelago and out into the open ocean.

By the moment it makes contact with Cuba, it is predicted to have weakened to a category three storm.

Environmental Context

Even though it is challenging to associate particular meteorological occurrences to environmental shifts, researchers say it is making weather phenomena increasingly frequent and more intense.

Warmer oceans create greater water vapor in the air, helping fuel the creation of tropical cyclones.

Prior to the commencement of this season's Atlantic storm period, meteorological authorities predicted above-normal activity, mentioning elevated ocean temperatures and potential enhanced seasonal rains around the western African continent - where hurricanes typically originate.