Large, low-pressure systems, such as tropical cyclones, have cyclonic rotation. Small scale rotating atmospheric features, such as tornadoes, water spouts, and dust devils can have either anticyclonic or cyclonic rotation, since the direction of their spin depends on local forces rather than the Coriolis effect.
Large, low-pressure systems, such as tropical cyclones, exhibit cyclonic rotation. Small-scale rotating atmospheric features, like tornadoes, water spouts, and dust devils, can have either anticyclonic or cyclonic rotation, as the direction of their spin is determined by local forces rather than the Coriolis effect.