Abstract
In August 2016, heavy rainfall induced by typhoons struck various part of the Hokkaido and Tohoku regions, northern part of Japan, causing severe floodings and sediment disasters. These typhoons headed northward along the coast of Japan facing Pacific Ocean and reached Hokkaido and its surroundings. In this study, we categorize the route of typhoons that reached Hokkaido by the Sea of Japan, Japan Islands and the Pacific routes for the 56-year period. The results show that Pacific route is dominant in August 2016 and they occured with extension of the Pacific anticyclone towards Northern part of Japan.
