Jamaica and other parts of the Caribbean are staring down what could become a catastrophic, days-long assault of extreme rainfall and damaging winds with a strengthening Tropical Storm Melissa expected to become a major hurricane over some of the hottest ocean water on the planet.

All eyes are still on Tropical Storm Melissa as it continues to swirl in the Caribbean.

"There is significant uncertainty in the track and intensity forecast of Melissa," the National Hurricane Center said.