Tropical Storm Erin is quickly making its way across the Atlantic Ocean and is expected to strengthen over the next few days, according to the National Hurricane Center. The official intensity forecast released Tuesday morning shows the storm growing into the season's first hurricane with the potential to become a major hurricane by early Sunday.

Tropical Storm Erin is tracking west over the open Atlantic Ocean on Tuesday and forecasters expect it to become the first hurricane of the Atlantic season this week.

The National Hurricane Center expects the storm to strengthen over the next several days and says it could become a hurricane by late Thursday.