Abstract
The investigation data of tornado generated from 1997 to 2006 in Japan was totaled, and the characteristics of the tornado generation was examined about the incidence, strength, and the relationship the location of tornado and the cyclonic scale. The average generation of tornado was 20.5, and the number of tornadoes generated in 2006 was more than forty. Tornado strength on F-scale was the same ratio as the investigation of the United States excluding the F0 scale. Tornadoes because of typhoon existed in the area within the five times of the maximum wind speed radius when the location of tornado occurrence was standardized by it. Tornadoes because of the cyclone were generated around the cold front, and the generation proportion in the Frontal region of the cold front neighborhood and the warm sector of Pre-frontal region was 4:6.
