What are the chances of two new systems forming in the wake of Hurricane Erin? Here’s what the so-called spaghetti models are showing for possible tracks.

Holly Andrzejewski hadn't yet welcomed her and her family's first guests to the Atlantic Inn on Hatteras Island when she had to start rescheduling them, as Hurricane Erin neared North Carolina’s Outer Banks on Tuesday and threatened to whip up wild waves and tropical force winds.

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

Erin is a large hurricane and is expected to grow "substantially in size" as it moves over the western Atlantic this week, according to the Hurricane Center. Hurricane-force winds extend outward up to 80 miles from the center, and tropical-storm-force winds extend outward up to 205 miles.

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

Hurricane Erin is forecast to "substantially grow in size" as it moves across the western Atlantic, according to the National Hurricane Center.

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

The National Hurricane Center (NHC) is monitoring two areas to watch for tropical development behind Hurricane Erin as the Atlantic Ocean's Main Development Region roars to life.