<human>:  What is the difference between a hurricane and a tornado?
<bot>: The main difference between a hurricane and a tornado is that a hurricane is a large tropical storm system that forms over warm ocean waters and has winds of 74 miles per hour or higher, while a tornado is a high-speed, rotating column of air that forms over land and has winds of at least 113 miles per hour. Hurricanes typically extend hundreds of miles, lasting for days, while tornadoes are much smaller and shorter-lived, typically only lasting a few minutes.