The night of August 3 caused widespread damage in northeastern Japan, with rivers overflowing and flooding roads and houses.
The Japan Meteorological Agency issued the highest rainfall alert for some areas in the Niigata and Yamagata prefectures and urged residents to ensure their safety.
On Aug. 4, damage was seen in these areas, along with the neighboring Fukushima Prefecture.
Two people were unaccounted for on Aug. 4, according to Chief Cabinet Secretary Hirokazu Matsuno.
As of 6 a.m. on the day, seven rivers were overflowing, according to the land ministry.
Three locations were flooded along the Mogamigawa River in Yamagata Prefecture, and one location was flooded along the Yoneshirogawa River in Akita Prefecture.
In Iide, Yamagata Prefecture, an approximately 40 meter long railway bridge of the East Japan Railway Co. JR East Yonesaka Line over the Kojirakawa River was found to have collapsed on the morning of August 4. The railroad tracks fell into the river.
In Yonezawa in the same prefecture, the river swelled, bent bridge piers and forced traffic to be stopped.
A railway bridge for the JR Banetsusai Line had fallen in Kitakata, Fukushima Prefecture.
Bullet train operations between Fukushima and Shinjo stations were suspended, according to JR East.
The platform at Sakamachi Station in Murakami, Niigata Prefecture, was flooded, according to the JR East Niigata branch.
There were reports that villages were reported isolated and roads were cut off due to the flooding.
One house in Murakami was completely collapsed in a landslide, injuring one resident. A road leading to a community in the area was blocked by rocks and sand, leaving about 80 households isolated.
In Sekikawa in the same prefecture, 280 households were isolated due to landslides and flooded roads.