Erin was a Category 3 hurricane Sunday, the National Hurricane Center said in its 2 p.m. ET update, with sustained winds of 125 mph, with tropical storm-force winds reaching out 205 miles. The storm is expected to continue to fluctuate in intensity,

Hurricane Erin is now a Category 5 storm as it rapidly intensified and threatens the Leeward Islands and Puerto Rico, then will move along the U.S. East Coast

Erin is the first hurricane to develop over the Atlantic this year, and meteorologists are closely tracking its path and forecast.