Erin is a Category 3 hurricane, the National Hurricane Center said in its 8 p.m. ET update Sunday, with sustained winds of 125 mph and tropical storm-force winds reaching out 205 miles. The storm is expected to continue to fluctuate in intensity and could double or even triple in size as it moves north and west,

Hurricane Erin exploded in strength and became a major storm in Atlantic waters just north of the Caribbean on Saturday, rapidly powering up from a tropical storm in a single day.

Due to its size, however, will create "rough ocean conditions" off the western Atlantic, Beven said.