Influences of the Nearby Mountains on the Localized Wind Damages of OGI City caused by Typhoon 0423

Abstract

Numerical experiments on the strong wind associated with the passage of typhoon 0423, which brought about localized wind damages in OGI city, Saga prefecture, are performed by using a meso-scale meteorological model. With the initial conditions based on the upper air sounding at nearby meteorological stations, the distribution of the surface wind relevant to that of the areal extent of wind damages was obtained. Vertical structures of the calculated flows over Mt.Tenzan are also investigated. It is indicated highly possible from the experimants that the strong wind was a kind of downslope wind from Mt.Tenzan.