Hurricane Melissa strengthened into a Category 4 storm on Sunday, unleashing torrential rain and threatening to bring catastrophic flooding to the northern Caribbean.

Melissa is a relatively slow-moving Category 4 major hurricane—a brutal combination that will drench some parts of Jamaica with up to 40 inches of rain

Tropical Storm Melissa has become a hurricane and is expected to strengthen into at least Category 4 intensity, the U.S. National Hurricane Center said on Saturday. The rapidly intensifying storm is expected to wreak havoc across the Caribbean with catastrophic floods,

Tropical Storm Melissa is expected to bring days of heavy rain to the Dominican Republic, Haiti and Jamaica and may trigger life-threatening flash flooding, the National Hurricane Center says.