Some parts of southern Kyushu have received up to 1,000 mm (39.4 inches) of rain since Friday, about as much as usually falls in the whole month of July, Japanese broadcaster NHK said, and forecasters expect as much as 300 mm more rainfall in some areas by Thursday evening.
Residents of southwestern Japanese cities Kagoshima, Kirishima and Aira have been ordered to evacuate, warned of life-threatening landslides caused by torrential rains, the cities said Wednesday. Evacuation advisories were issued for almost 870,000 people in nearby areas, according to NHK.
Rescue workers and local residents watch the Wada River, which has been swollen due to heavy rain in Kagoshima.
"The sound of the rain is so strong that it worries me", one evacuee told Kyodo News.
Local residents shielding themselves with umbrellas fearless heavy rain caused by Typhoon Mun, the 4th typhoon of the year.
The governor of Kagoshima prefecture asked Japan's Self-Defense Forces on Wednesday to dispatch a disaster team to help residents and emergency crews cope with landslides and floods, according to Japan's Ministry of Defense. The Chugoku region around Hiroshima, and the Hokuriku area facing the Sea of Japan, were also expected to see heavy rainfall, according to the agency.
Prime Minister Shinzo Abe has told residents of the cities to "take steps to protect their lives".
The agency said landslide warnings have been issued for parts of the three prefectures because rain is expected to intensify over the next few days.