[Machine Translation] We interviewed the Japan Weather Association, a private weather company with more than 220 meteorologists. The accuracy rate of weather forecasts now exceeds 80%. What supports this high accuracy is "human power. The staff of the Japan Weather Association makes decisions on weather forecasts on a daily basis while advancing observation and forecasting technology and communication networks. The work of each staff member covers a wide variety of topics, from daily life to the Earth and space. This article introduces the work of a major private weather company from multiple perspectives, including basic knowledge of weather, the latest research, product development, application development, and more.