The National Hurricane Center (NHC) is closely monitoring several tropical systems in the Atlantic, with Tropical Storm Erin expected to strengthen into a major hurricane in the coming days. Forecasters are also keeping an eye on two additional disturbances, one of which has a 90 percent chance of developing into a tropical system. A new tropical wave off the coast of Africa is showing signs of robust development, prompting experts to anticipate potential risks to the Caribbean and U.S. areas. As the Atlantic hurricane season intensifies, the NHC is focused on the probabilities of these systems while residents along the coast remain vigilant for possible impacts.