Invest 91L is likely to become a tropical depression by the weekend.

The system is expected to approach the Lesser Antilles by the middle of the week.

Conditions are favorable for strengthening but will it become Tropical Storm Gabrielle?

The National Hurricane Center designated a tropical wave in the eastern Atlantic as Invest 91L, Thursday afternoon, Sept. 4.

Conditions are favorable for additional development and the disturbance is "likely to become a tropical depression by the weekend," according to the National Hurricane Center.

➤ Track all active storms

➤ Weather alerts via text : Sign up to get updates about current storms and weather events by location

The system is expected to approach the Lesser Antilles by the middle of the week, which also happens to coincide

See Full Page