The U.N. said Wednesday that Hurricane Melissa had left "tremendous unprecedented devastation" in Jamacia and called on nations to help support the country in its recovery.

"What we are seeing in preliminary assessments is a country that's been devastated to levels never seen before," said Dennis Zulu, U.N. Resident Coordinator in Jamaica.

"The country of Jamaica and the government of people of Jamaica need the support of all of us, really, to get them back to some state of normality," he added.

Zulu reported that at least one airport in Kingston will open tomorrow, which would facilitate the flow of aid supplies into the country.

Melissa has left a trail of destruction across Cuba, Haiti and Jamaica.

The storm made landfall Tuesday in Jamaica as a Category 5 hurricane, with winds reaching 185 miles per hour.

In Haiti, at least 25 people have died, officials said.

In Cuba, officials report collapsed houses and blocked roads, with 735,000 people in shelters.

Jamaica faces widespread power outages and communication blackouts.

The U.S. is sending rescue teams to assist.

Cuban President Miguel Díaz-Canel warned of significant damage, urging people not to underestimate the storm's power.