At least 38 people have died and almost 50 remained missing on Saturday due to torrential rainfall and flooding in southern Japan.
The Japan Meteorological Agency (JMA) issued the highest possible alert for the prefectures of Hyogo, Okayama, Gifu Fukuoka, Nagasaki, Saga, Hiroshima and Tottori, reports EFE news.
Around 650 members of the armed forces were deployed for rescue operations, while an additional 21,000 were on standby, Defence Minister Itsunori Onodera told reporters.
Authorities issued evacuation orders affecting over four million people.
In a press conference, the JMA warned that the earth had softened due to the rainfall, increasing the risk of accidents related to landslides.
The Japanese archipelago has been pounded by heavy rain since Thursday. The JMA has to forecast record rainfall till Sunday and warned that in some regions, precipitation could reach up to 8 cm per hour.