If a tornado with a 1 mile width and winds of 205 MPH touched down on the plains of Nebraska, traveled 3 miles, and no property was damaged....What would it rank???
EF0.
The Enhanced Fujita scale, just like the Fujita scale before it, is a damage scale. The wind speeds are just estimates that are attached for the purpose of perspective. The enhanced scale was made to give a better estimate of wind speed, but they can't estimate wind speed unless stuff is hit and damaged.
There isn't proper doppler radar coverage to accurately record tornado wind speed...the only time accurate wind measurements are made with tornadoes is when the University of Oklahoma's doppler-on-wheels trucks bracket the storm and get a reading from two close-by doppler radars.
In short, the F-scale is all about damage.