Tropical Storm Melissa is nearly stationary in the central Caribbean, with forecasters warning it could soon strengthen and brush past Jamaica as a powerful hurricane. Catastrophic flooding and landslides are likely in southwest Haiti in the coming days. U.S. forecasters said the storm's slow movement will mean days of exposure to heavy rain and strong winds, which will worsen flooding and other dangers. Melissa had 65 mph winds early Friday. It could strengthen into a hurricane Saturday and a major hurricane later in the weekend. Authorities were opening shelters and making other preparations in Jamaica, Haiti and the Dominican Republic.