According to a report by the Japanese Kyodo News on August 18, the Chiba Prefectural Government announced that the number of deaths caused by the heavy rain has increased to 13, including those whose causes are still under investigation. Statistical data released by the county on the afternoon of August 18 showed that there were a total of 2,314 homes affected by flooding, of which 1,105 had water up to the ground level and 1,209 had water below the ground level. There were also 66 damaged homes.
On the other hand, the Japanese government held its first meeting of relevant ministers regarding the torrential rains in Chiba at the Prime Minister's Office on that day. Japanese Prime Minister Masayoshi Motegi gave instructions for the early reconstruction of the disaster area, asking relevant departments to 'fully respond according to local needs'.
Flooded Chiba Prefecture - Video Screenshot
Since the evening of August 13th, Japan's Chiba Prefecture and other areas have been hit by the historic extreme rainfall event known as "Chiba Heavy Rain in August 2026". The rainfall in Chiba City reached 367 millimeters in 24 hours, which is about three times the total rainfall in August in previous years. The local area issued a severe rain warning at the highest level.
A quantum science and technology research and development institution in Chiba City, Chiba Prefecture, Japan, revealed on August 17 that the region experienced record-breaking heavy rain on August 13. This caused water to seep into some areas of the basement within the institution. Radioactive waste liquid was "possible to leak outside," but the specific composition was not disclosed.
