 Convection deepened and expanded, though wind shear displaced the low-level center to the west of the convection.By August 26, the structure had become much better-defined, and within five days Ernesto was forecast to be located about 275 mi (445 km) south of the Gulf Coast of the United States as a powerful hurricane.The center reformed under the deepest convection after wind shear decreased, and at the same time outflow increased in all quadrants.