As of 5 a.m. on Sunday, Hurricane Erin has weakened back to a Category 3 storm but has grown larger, the National Hurricane Center said.

Royal Caribbean's Vision of the Seas made an unplanned stop in Port Canaveral due to Hurricane Erin. FOX 35's Matt Trezza learned that passengers were informed of the itinerary change just days before docking.

ORLANDO, Fla. - Royal Caribbean's Vision of the Seas docked unexpectedly in Port Canaveral, Florida, due to Hurricane Erin. Passengers were informed of the change only two or three days prior to the stop. The original itinerary included a visit to Bermuda, which was canceled.

U.S. shores are unlikely to see a direct hit, but a strong offshore hurricane can produce massive and dangerous waves well away from its center.

An eyewall replacement cycle is underway within Hurricane Erin as the monster storm continues to barrel across the Atlantic while bringing gusty winds and rain to Puerto Rico and the Virgin Islands after rapidly intensifying into a catastrophic Category 5 hurricane over the weekend.

Erin, the first hurricane of the season, is now forecast to become a Category 4 by Sunday. Here's where it could head in the week ahead.