In what direction do extra-tropical cyclones typically track across the united states

They are counterclockwise in the northern hemisphere, and clockwise in the southern hemisphere.

Explanation:

Owning to the effects of the Coriolis force the extratropical cyclones move in the counterclockwise direction in the northern hemisphere and to the opposite in the southern hemisphere, and they are also called s the midlatitude cyclone.  And they drive the air over the earth's surface and are capable of producing anything. In the united states, they move to form the south to the northern direction. And thus are given the warm waves in the U.S in their life cycle.

Cause of he different elevations  hope this ?

It is useful for historians to write narratives so that history can be passed on from their point of view.  think about a story being told in third person, then think about it again being told in first person, by someone who actually experienced the event.