What term describes high-speed air currents that migrate with the seasons?

The term that describes high-speed air currents migrating with the seasons is jet streams. These are narrow bands of strong winds in the upper levels of the atmosphere that typically flow from west to east and can significantly influence weather patterns. Jet streams form at the boundaries of different air masses, particularly where there is a strong temperature gradient, and they tend to shift northward and southward with the changing seasons. Their location and intensity can affect both local weather systems and larger climatic trends.

Trade winds, while also related to atmospheric circulation, primarily refer to the persistent winds found in the tropics that blow from east to west. Tornadoes and hurricanes are specific weather phenomena associated with severe storms and do not refer to consistent high-speed air currents like jet streams do.