cyclonic circulation

Rotation around a center of curvature that is in the same direction as the rotation of the Earth. In the Northern (Southern) Hemisphere cyclonic circulation is counterclockwise (clockwise). In the atmosphere, cyclonic circulations are associated with regions of low pressure and stormy weather.

Circulation (or rotation) which is in the same sense as the Earth's rotation, i.e., counterclockwise (in the Northern Hemisphere) as would be seen from above. Nearly all mesocyclones and strong or violent tornadoes exhibit cyclonic rotation, but some smaller vortices, such as gustnadoes, occasionally rotate anticyclonically (clockwise). Compare with anticyclonic rotation.

Circulation (or rotation) which is in the same sense as the Earth's rotation, i.e., counterclockwise (in the Northern Hemisphere) as would be seen from above. Nearly all mesocyclones and strong or violent tornadoes exhibit cyclonic rotation, but some smaller vortices, such as gustnadoes , occasionally rotate anticyclonically (clockwise). Compare with anticyclonic rotation