The Martian Midlatitudes...

On Earth, traveling weather systems move eastwards across the extratropical regions. The same sorts of systems do exist on Mars, with some important differences.

On Mars, these systems are regular. In other words, traveling atmospheric waves tend to have well defined periods, as opposed to their counterparts on Earth, which have no set periods and are very difficult to predict.

On Earth, weather systems occur in both winter and summer (although they tend to be weaker in summer). On Mars, the summer hemisphere is dominated by atmospheric tides (see the surface pressure page). While there is some evidence for weather systems near the Martian summer polar caps, activity is rare and isolated.

On Earth, storms tend to occur in storm zones, which lie mainly in the North Atlantic, Pacific, and Antarctic oceans. On Mars, where there are no oceans, storms tend to be at their strongest around large scale topographical features, such as mountainous terrains.