The National Hurricane Center issued its first advisory on the fifth-named storm of the Atlantic hurricane season at 11 a.m., warning Erin could become a hurricane by Wednesday, Aug. 13 and a major hurricane by Saturday, Aug. 16, as it moves quickly west across the Atlantic.

Forecasters say Tropical Storm Erin has formed in the eastern tropical Atlantic Ocean as Hurricane Henriette is strengthening in the Pacific Ocean.

Tropical Storm Erin has officially formed in the Atlantic, and it could become the first hurricane of the season. The tropical storm formed on the morning of Monday, Aug. 11, and has maximum sustained winds near 45 mph, according to a public advisory from the National Hurricane Center (NHC) in Miami.