Torrential rain will likely continue in Kyushu, western Japan, due to a stationary, active front hovering over the Japanese archipelago.
Record rainfall has already caused flooding and landslides mainly in northern Kyushu.
In the past 48 hours, the city of Saga has had 427 millimeters of rain, more than double the average for the month of August.
Officials have issued landslide warnings for some parts of Saga, Fukuoka, Nagasaki and Aomori prefectures.
The front is expected to stay over western and eastern Japan.
There is a chance of downpours and lightning in some areas of northern Kyushu, as rain clouds are expected to develop through Thursday morning.