Hurricane Melissa made landfall in Cuba overnight after battering Jamaica as one of the most powerful landfalling storms in Atlantic basin history.

Caribbean countries are reeling as Hurricane Melissa has left a trail of devastation and flooding in Jamaica, Haiti and Cuba. At least four people in Jamaica are confirmed dead and at least 20 people have died in Haiti flooding.

Hurricane Melissa strengthened into a Category 5 storm early Monday, unleashing torrential rain and threatening to bring catastrophic flooding to the northern Caribbean.

Sagua de Tánamo, a town in Holguín province, awoke to flooding of the Sagua River. In Contramaestre, a town in Santiago de Cuba province, Melissa’s strong winds uprooted trees and tore off sections of sidewalk.

One viral video shows what appears to be four sharks swimming in a Jamaican hotel's pool as floodwaters allegedly brought on by Hurricane Melissa swamp the area. Another purportedly depicts Jamaica's Kingston airport completely ravaged by the storm.

Hurricane Melissa barreled across Jamaica as a Category 5, leaving behind a path of devastation. Tannecia Stephenson, climate expert and physics professor at The University of The West Indies, joins Ana Cabrera to share her reaction to the strength of the storm,