convection continued but the cyclone was encountering extensive easterly to north-easterly wind shear which stinted the strengthening of this storm throughout its history. the cyclone initially headed toward the west-northwest around a subtropical ridge that was centered over the western gulf of mexico. the depression moved north west, parallel with the west coast of mexico due to being steered by the mid/upper-level ridge. on august 31, it strengthened to become tropical storm henriette, 85 miles (137 km) south of acapulco.