Forecasters say there could be tropical development in the Atlantic just days after the start of the 2025 hurricane season. The window for activity will open during the second week of the month, and there could be some impact in the United States as a result,

In the Atlantic Basin, which includes storms that form in the Atlantic, the Caribbean Sea and the Gulf of America (formerly known as Gulf of Mexico), hurricane season lasts from June 1 until Nov. 30. Historically, 97% of all tropical cyclones in the Atlantic will form between those two dates.

Sunday marks the official start of the Atlantic hurricane season. June 1 is the first day of hurricane season in the Atlantic Ocean, the official start of a six-month period that can bring some of the most destructive and costly natural disasters to American shores.