Abstract
1. Object
The author picked up 14 examples of conflagration after World War II, occurred in Japan, and arranged their observed data of weather condition to make clear the nature of strong wind blowing in such large fires (conflagrations).
2. Results
a) We found, through those data, that certain course of typhoon causes foehn phenomenon, and these have greatly influenced conflagration in Hokuriku and San-in regions in Japan.
b) The relative humidity at the time of occurrence of a conflagration is not so low. It is considered that the effective humidity, or the water content of constructing materials of a building, has close relation to the conflagration.
