Abstract
A F1 class tornado occurred Kokufu Town of Tokushima City on August 29, 2007. This tornado gave many damages to buildings and plants in the area whose dimension was about 4km long and about 100m wide. The field investigation was carried out 2 hours later from this incident, and the tornado path on the grand surface was estimated by its results. The motion and the scale of the funnel cloud and the wind speed near the center of this tornado were estimated by some photos and some video movies.
