Primary Factors behind the Heavy Rain Event of July 2018 and the Subsequent Heatwave in Japan from Mid-July

Japan experienced significant rainfall particularly from western Japan to the Tokai region mainly in early July (The Heavy Rain Event of July 2018), which caused widespread havoc nationwide. Extremely high temperatures subsequently have persisted throughout most of Japan since mid-July. In this context, the Japan Meteorological Agency held the extraordinary session of the Tokyo Climate Center Advisory Panel on Extreme Climatic Events on 10 August to investigate atmospheric and oceanic conditions considered to have contributed to such climate extremes and related primary factors.

The summary of investigation was published as a press release from the Tokyo Climate Center and available from its website.