As the cyclone progresses across Earth's surface, the cold and warm fronts rotate about the center of low pressure.

As the cyclone progresses across Earth’s surface, the cold and warm fronts rotate about the center of low pressure. The motion of the storm system has similarities to that of a flying Frisbee®, that is, a Frisbee spins as it sails through the air (simultaneously exhibiting rotational and translational motions). Typically, the cold front rotates about the center of the low faster than the warm front. Consequently, the extent of the warm sector occupied by relatively warm and humid air at the surface [(shrinks)(increases)].