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Cyclone Melissa is predicted to become a infrequent highest-level storm as it shifts toward Jamaica, bringing deadly sudden floods and rock falls.

This weather system, which registered wind speeds of up to 120 mph as of 6:00 AM GMT, is now shifting northwest in the Caribbean region and is projected to make landfall by early next week, as reported by meteorological authorities.

Warnings of electricity outages and structural damage have been issued as this storm brings up to 76cm of rain and storm surges as high as 4m above ground. "Take cover without delay," residents have been told.

The cyclone is the 13th cyclone in the current Atlantic hurricane season, which usually concludes in November.

Most Intense Storm Danger

A highest-level storm is the strongest type, with winds of at least 157mph.

Although this storm is expected to weaken to a category four hurricane before arriving at the island, authorities said there was "very little practical difference in the general consequences" upon making contact with land, and that the cyclone will be "at least that intensity" when it hits the country.

Critical Safety Steps

With tropical storm-strength gusts and precipitation anticipated well in advance well before it crosses central Jamaica - perhaps encompassing the national capital - alerts emphasize that "safety measures need to be finalized quickly".

"A multi-day period of damaging winds and intense precipitation have begun and will cause catastrophic and life-threatening rapid water accumulation and numerous rock slides," counseled climate experts.

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

"Yet the optimal approach to address anxiety and any apprehension and concern is to stay ready."

Locals are being instructed to secure their homes with sand barriers and plywood sheets, and to stock up on essentials.

Wider Impact

Advisories are also in effect for regions of the neighboring country encompassing the main city, Port au Prince, the adjacent nation and Cuba's eastern region, where this storm is anticipated to bring similar effects by the midweek period.

Mudslides presently generated by the hurricane have caused two deaths in the country, according to emergency services.

Expected Course

This weather system is forecast to pass over Cuba by the middle of the week before traveling via the Antillas Mayores and emerging into the open ocean.

By the point it arrives at Cuba, it is forecast to have diminished to a third-level cyclone.

Environmental Connection

Even though it is difficult to link individual weather events to global warming, scientists say it is resulting in climate patterns more prevalent and more extreme.

Higher ocean heat create greater water vapor in the atmosphere, helping fuel the development of tropical cyclones.

Before the start of the current Caribbean cyclone season, climate agencies predicted higher-than-average occurrence, citing elevated ocean temperatures and potential stronger monsoon activity around African coastal regions - where Atlantic storms frequently develop.