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 is tracking two systems in the Atlantic basin, including a new one moving into the Gulf.

Forecasters say Erin will likely become a hurricane in a couple of days, but it's still too early to determine what sort of impacts the storm could have, if any, on the U.S. East Coast.