Hurricane Melissa is set to bring catastrophic winds, flooding and storm surge to Jamaica, forecasters have warned.

Hours from landfall, Hurricane Melissa is also slow moving like Hurricane Harvey in 2017, which could mean catastrophic flooding.

Jamaica is expected to be in the storm's eyewall, which refers to the band of dense clouds surrounding the eye of the hurricane. The eyewall generally produces the fiercest winds and heaviest rainfall, according to Deanna Hence, a professor of climate, meteorology and atmospheric sciences at the University of Illinois Urbana-Champaign.

"It is more than kind of distressing because you don't know when and you don't know how," said Ewan Simpson, who lives in Jamaica.

The news “underscores the profound ecological toll that Hurricane Melissa will have on Jamaica’s biodiversity,” said one expert on the island.