A tropical storm warning has been issued for North Carolina as Hurricane Erin churns up the east coast of the U.S. as a Category 2 storm.

Hurricane Erin is a huge Category 4 storm and is expected to both grow larger and stronger today as it moves toward the west-northwest. The center of the storm is expected to remain offshore as it moves between the U.S. and Bermuda.

As of 7 a.m. CDT Wednesday, the center of Category 2 Hurricane Erin was located about 400 miles south-southeast of Cape Hatteras, N.C., or 560 miles west-southwest of Bermuda, and was tracking to the north-northwest at 13 mph. Erin’s sustained winds were 100 mph, making it a Category 2 storm.