Atlantic faces the rare prospect of two active tropical storms in June

Although the Atlantic hurricane season begins June 1, the bulk of the tropical activity typically clusters during the middle months of August, September, and October when the seas reach their peak temperatures. This year has already been unusual, however, with the formation of a highly rare tropical storm in April—Arlene, which meandered around the open Atlantic Ocean for a few days.
From a climatic standpoint, the development of two more tropical storms in June this year would be intriguing. During a normal year, the Atlantic basin—which includes the Atlantic Ocean, Caribbean Sea and Gulf of Mexico—typically doesn't produce its third named storm until mid-August.
https://arstechnica.com/science/2017/06/atlantic-faces-the-rare-prospect-of-two-active-
tropical-storms-in-june/