Hurricane Erin's push up alongside the east coast is bringing rough seas and high winds to Cape Cod and the Islands, disrupting ferry travel in the waning weeks of summer.

More than 33 million Americans were under coastal flood advisories on Aug 20 as Hurricane Erin head north toward the U.S. mainland.

Hurricane Erin has battered North Carolina’s Outer Banks with strong winds and waves that flooded part of the main highway and surged under beachfront homes.

A Spirit Airlines plane appears to have flown through Hurricane Erin this week when the hurricane was a Category 4 storm with winds well over 100 mph, according to a flight path shared on social media. Spirit Airlines told Newsweek in a statement that the flight operated normally and no injuries were reported.

Meteorologists are closely tracking the projected path and forecast of Hurricane Erin, which is the first hurricane to develop over the Atlantic this year.

On Wednesday, Hurricane Erin was several hundred miles off the coast of Florida and beginning to push storm surge and deadly rip currents toward the shore. Two other systems may form right behind.

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

The hatched areas on the National Hurricane Center's tropical outlook map indicate "areas where a tropical cyclone — which could be a tropical depression, tropical storm or hurricane — could develop," said National Hurricane Center Deputy Director Jamie Rhome.