Statistical Features of Gusts Accompanied with Snowclouds in Shonai Plain

Abstract

A long-term observations of gusts were carried out on the Shonai Plain using X-band Doppler radar and surface weather stations from 2007. Based on the 76 cases of the detected gusts, the features of gusts were revealed. Based on the 1-minute maximum instantaneous wind speed, 4 % of them exceeded 15 m/s and 0.7 % exceeded 20 m/s, respectively. About 50 % of the detected gusts exceeded the wind speed of 20 m/s. 80 % of the gusts were accompanied with radar echoes.