Maximum wind speed estimation for arbitrary month periods in Japan

Abstract

In order to determine the design wind speed for temporary structures or structures during construction, the seasonal variation of extreme wind speeds should be taken into account. Based on the examination of cumulative distributions of monthly maximum wind speeds recorded at 143 sites in Japan in a period between 1964 and 1979, monthly maximum wind speeds of mean recurrence intervals are presented in terms of the ratio to the annual maximum of corresponding mean recurrence intervals for typical months and various sites in Japan. Then a simple formula to evaluate extreme wind speeds for arbitrary month period is proposed and its consistency was confirmed for typical cases.