Hurricane Erin won't make landfall, but Jersey Shore and Delaware beaches will be affected by its presence offshore.

"Heavy rainfall is possible on the Outer Banks of North Carolina, with potential for a maximum of 4 inches," NHC said Tuesday.

Tropical storm watches expand from the Virginia beaches to Fenwick Island, Delaware, including Ocean City, Maryland.

H urricane Erin, now a Category 2 hurricane, has prompted a tropical storm watch for North Carolina's Outer Banks and is expected to bring dangerous waves and rip currents to beaches along the East Coast. While the storm won't make landfall on the East Coast, it has prompted mandatory evacuations for some Outer Banks residents and visitors.

Two more tropical systems trail Hurricane Erin, which is following a projected course that brushes past the East Coast without making landfall.

Though Hurricane Erin is not forecast to make landfall on the U.S., the storm’s rapid intensification has prompted increased measures in North Carolina.

The hurricane’s behavior in recent days makes it one of the fastest-strengthening Atlantic hurricanes on record.

Hurricane Erin was a Category 4 storm Monday morning and is expected to retain major hurricane status through the middle of the week.