Abstract
Typhoon 9918 passed through the Kyushu District and the western part of Chugoku District on September 24, 1999. A gust higher than 20m/s was recorded in the middle and southern parts of Kyushu District. The typhoon caused gust and storm surge disasters in the western part of Japan. The agricultural loss in the Kyushu District exceeded 91 billion yen. The peak gust recorded at Onoda Fire Station of Yamaguchi Prefecture was 58.9m/s. The sea level in Ube port was 560cm at 8:00, which was 209cm higher than the expected value(351cm). In Aiofutajima of Yamaguchi City, the gust and storm surge caused the bank to collapse, The rice plants received salt damage from the sea water and did not yield any rice that year.
