How much time does it take for a tornado to pass in one mile?

It varies as different tornadoes move at different speeds. The average tornado, however, moves at about 30 mph. At this speed a tornado would travel a mile in two minutes. Some slow moving tornadoes may move at 10 mph or less. At 10 mph a tornado would travel a mile in six minutes. Some of the fastest-moving tornadoes have traveled at 70 mph. At this speed a tornado would move a mile in just over 50 seconds.