Tropical Storm Rafael is intensifying in the Caribbean, with heavy rainfall forecasted for Jamaica and Cuba. Maximum sustained winds of 35 mph are noted, with potential hurricane conditions as it approaches western Cuba. A hurricane watch is in effect for parts of Cuba, including Havana, due to anticipated flooding of up to 9 inches. The storm may impact southeastern US states later this week, with weather warnings in place for Jamaica and the Cayman Islands. The NHC has highlighted uncertainties regarding the storm's future path and intensity as it approaches the Gulf of Mexico.