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.

Erin could potentially strengthen to sustain wind speeds of over 115 miles per hour in the next four days, making it a Category Three hurricane on the Saffir-Simpson scale and the first major hurricane of the Atlantic season.

Tropical Storm Erin may near Puerto Rico and the Dominican Republic before likely turning north as a hurricane, sparing the U.S.