Hurricane Erin is expected to impact the Outer Banks in North Carolina, sending massive waves crashing into the barrier islands.

Erin weakened more overnight, with maximum sustained winds down to 100 mph. It remains a Category 2 hurricane, down from its peak as a Category 5 storm with 160-mph winds Aug. 16. Dangerous rip currents are expected along U.S. east coast beaches from Florida to Canada.

The National Hurricane Center is watching two areas of interest in the Atlantic behind Erin. Here's the latest on what may happen next.

Forecasters are tracking three systems in the Atlantic basin, including one with a medium chance of becoming a tropical depression later this week.

A potential tropical storm could develop later this week in the same region that produced Hurricane Erin. The season's sixth tropical storm would be named Fernand.

Dangerous rip currents are expected along the U.S. East Coast as Hurricane Erin grows in size this week, the National Hurricane Center said Tuesday.

The National Hurricane Center is tracking two systems in the Atlantic basin, including a new one moving into the Gulf.

The first area has been under the eyes of the National Hurricane Center for a few days as it emerged off Africa’s west coast.