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.

Tropical Storm Erin officially formed in the eastern Atlantic on Monday morning, just west of the Cabo Verde islands. This system is expected to continue moving west to west-northwest at 15 to 20 mph across the eastern and central tropical Atlantic.