Hurricane Erin briefly strengthened into a Category 5 storm. It is not expected to make a direct hit on the U.S. but will create dangerous surf.

Hurricane Erin could 'at least double or triple in size' next week and the track has shifted south, but remains likely to turn away from the East Coast.

Erin is the fifth named storm of the Atlantic hurricane season, which runs from June 1 to Nov. 30. It's the first to become a hurricane.