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Tropical Storm Melissa is forecast to escalate to a infrequent highest-level cyclone as it shifts toward Jamaica, delivering dangerous rapid inundation and landslides.

This weather system, which recorded wind speeds of up to 120 mph as of 6:00 AM GMT, is presently veering northwest in the Caribbean Sea and is anticipated to reach land by midweek, as reported by weather experts.

Alerts of blackouts and disruption to utilities have been announced as Melissa generates up to 76cm of rainfall and sea level surges as high as 13ft above ground. "Find safe refuge immediately," residents have been advised.

This hurricane is the thirteenth cyclone in the current Atlantic season, which normally finishes in November.

Most Intense Cyclone Risk

A highest-level cyclone is the most intense classification, with wind speeds of at least 157 miles per hour.

Even though this storm is expected to diminish in strength to a category four cyclone before making landfall on the island, experts said there was "almost no noticeable change in the overall impacts" upon landfall, and that the hurricane will be "at least that intensity" when it impacts the island.

Immediate Readiness Measures

With tropical storm-level wind and rainfall predicted to begin ahead of it passes over Jamaica's central region - including potentially the city of Kingston - advisories state that "safety measures need to be finalized quickly".

"An extended timeframe of harmful winds and torrential rain are underway and will cause catastrophic and life-threatening sudden floods and numerous landslides," advised weather authorities.

Jamaican Prime Minister the official stated: "I know that there are numerous residents who are anxious, who are extremely apprehensive, and with good reason: worry is natural.

"However the optimal approach to manage anxiety and any unease and worry is to stay ready."

Residents are being advised to protect their properties with sand barriers and wooden boards, and to stock up on necessary supplies.

Wider Consequences

Advisories are also active for areas in Haiti such as the capital, Port au Prince, the adjacent nation and the eastern part of Cuba, where the hurricane is projected to bring similar effects by the middle portion of the coming week.

Rock slides presently generated by the storm have resulted in two fatalities in Haiti, according to the nation's Civil Protection agency.

Future Path

The hurricane is forecast to pass over Cuba by the middle of the week before moving through the Greater Antilles and entering the open ocean.

By the point it arrives at the Caribbean nation, it is anticipated to have diminished to a Category 3 hurricane.

Climate Connection

While it is difficult to connect individual weather events to global warming, researchers say it is resulting in climate patterns increasingly frequent and more intense.

Warmer oceans create more moisture in the atmosphere, helping fuel the formation of hurricanes.

Prior to the beginning of this year's Caribbean cyclone season, weather organizations forecast higher-than-average occurrence, referencing warmer seas and possible more intense weather patterns around the western African continent - where Atlantic storms frequently develop.