Improvement of earthquake and tsunami early warning service capabilities in Japan

In recent years, in order to improve the intelligent level of earthquake prevention and disaster reduction, the Japan Meteorological Agency has continuously improved the functions of the earthquake phenomena observation system (EPOS) and the intelligent prediction level of tsunami, and has made efforts to improve the earthquake and tsunami early warning service capabilities. In December 2022, it began to release follow-up earthquake early warning information in Hokkaido and Sanriku regions, and in February 2023, it began to release earthquake early warning information of long-term ground motion levels. This article aims to provide reference for the research and construction of earthquake early warning systems in China.