Around a low-pressure centre, the pressure-gradient force directed inward balances the Coriolis force and the centrifugal force, both directed outward; because the Coriolis force acts to the wind’s right in the Northern Hemisphere and to its left in the Southern, the wind blows counterclockwise along the curved isobars in the Northern Hemisphere and clockwise in the Southern Hemisphere. In contrast, around a high-pressure centre, the Coriolis force directed inward balances the centrifugal force and the pressure-gradient force, both directed outward; in this case, the gradient wind blows clockwise along the curved isobars in the Northern Hemisphere and counterclockwise in the Southern Hemisphere.