Erin has rapidly intensified into a Category 4 major hurricane. NOAA Hurricane Hunters are currently flying through the storm and gathering data. Erin is expected to continue strengthening through the weekend and may reach high-end Category 4 or Category 5 hurricane status over the next couple of days.

Hurricane Erin is now a Category 4 storm, rapidly intensifying overnight into early Saturday morning as it moves closer to the U.S. East Coast with sustained winds up to 155 mph.

Erin, the first hurricane of the season, is now a powerful Category 4 hurricane. Here's where it could head in the week ahead.