Abstract
Possibility of quantitative forecasting of local tsunamis sufficiently before their arrivals, by use of a super computer, is examined. Provided that the initial tsunami profile can be determined within a few minutes after an earthquake by such a method as proposed by lzutani and Hirasawa, the tsunami numerical simulation based upon the linear long wave theory can be finished within two minutes and give practically accurate tsunami heights at every 200m along the castline of the Sanriku district extending from 41°30′N. to 36°20′N.
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