Sign up for the Morning Brief email newsletter to get weekday updates from The Weather Channel and our meteorologists.T​he Atlantic hurricane season's 18th named storm, Sara, is likely to form in the western Caribbean Sea and might head toward the Gulf of Mexico next week,

A batch of showers and thunderstorms over the central Caribbean is forecast by AccuWeather meteorologists to evolve into a tropical rainstorm and then become a tropical storm later this week as it drifts westward.