Q: If the normal trajectory of weather in the continental US is from west to east, why is the normal trajectory of a hurraince from south to north?
A: A hurricane can go in almost any direction, but its path is subject to belts of wind at different heights and latitudes and to its own itnernal winds...In the Northern Hemisphere, the direction of a hurricane is the result of a combination of the Coriolis force and steering winds five to seven miles up...
Steering a Hurricane
http://query.nytimes.com/gst/fullpage.html?res=9403E6DA1031F93AA2575AC0A9609C8B63
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