Hurricane Melissa, now a powerful Category 5 storm, is bearing down on Jamaica and is forecast to be the worst storm in the island's history.

Hurricane Melissa has strengthened to a Category 5 storm and is expected to produce catastrophic floods and heavy infrastructure damage in Jamaica.

Landslides — defined by the USGS as “the movement of a mass of rock, debris or earth down a slope” — are capable of traveling tens of miles (kilometers) per hour and can damage homes and block roads ...