The outer bands of powerful Hurricane Erin lashed Puerto Rico, and the storm is approaching the Bahamas next. What can the mainland U.S. expect?

Hurricane Erin weakened to a Category 3 storm with maximum sustained winds of 125 mph while its outer bands pounded the Virgin Islands and Puerto Rico with gusty winds and heavy rains early Sunday.

Erin, the first hurricane of the season, is now a powerful Category 5 hurricane. Here's where it could head in the week ahead.