Erin is a Category 3 hurricane, the National Hurricane Center said in its 5 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 could be near the southeast portion of Florida by Monday, Aug. 18 at 8 p.m. ET. This forecast track shows the most likely path of the center of the storm. It does not illustrate the full width of the storm or its impacts, and the center of the storm is likely to travel outside the cone up to 33% of the time.

The storm will remain a major hurricane through the middle of the week, according to the National Hurricane Center.

Hurricane Erin exploded in strength to a Category 5 storm in the Caribbean on Saturday, rapidly powering up from a tropical storm in a single day, the National Hurricane Center said.