Emerald Isle, Bogue Bank Pier, mammatus clouds and cloudwall asccociated with tornado-producing line of storms, Fort Macon State Park, and Mt. Mitchell State Park and the Blue Ridge Parkway..Emerald Isle, Bogue Bank Pier, mammatus clouds and cloudwall asccociated with tornado-producing line of storms, Fort Macon State Park, and Mt. Mitchell State Park and the Blue Ridge Parkway.