This aerial footage was taken over the city of Oamishirasato in Chiba Prefecture, east of Tokyo, shortly after 8 a.m. on August 14.

The area is extensively covered by muddy brown water, indicating massive flooding.

There have also been reports of four landslides in the city.

The Japan Meteorological Agency temporarily issued the uppermost Level 5 warnings for heavy rain and landslide emergencies for more than 20 municipalities in Chiba Prefecture.

Eight people have died as a result of the heavy rain.

According to Chiba Prefecture and other authorities, a man believed to be in his 60s or 70s was found floating on a flooded road in the city of Ichikawa and was later confirmed dead.

In Yachiyo, a man was found submerged in a flooded area and was confirmed dead.

In Sakura, a 66-year-old woman was trapped in her vehicle by floodwaters and was pronounced dead at the scene, while a man found collapsed on a road was confirmed dead after being transported to a hospital.

In the city of Chiba, a man in his 40s who had been trapped in a vehicle was discovered and confirmed dead, while one person was reported missing.

In Kashiwa, a 76-year-old woman was in cardiopulmonary arrest after being trapped in her car on a flooded road and later died.

As for structural damage, authorities confirmed flooding above floor level in 45 buildings and below floor level in 39 buildings as of 7:30 a.m. on August 14.

According to the Chiba prefectural government, more than 7,300 people were staying in evacuation shelters as of 6 a.m.

Across the prefecture, emergency bulletins for short-term rainfall exceeding 100 millimeters per hour were issued 25 times between the evening of August 13 and early the following day.

Special emergency warnings for heavy rain and landslide disasters were temporarily issued, but they were downgraded to regular warnings and advisories by the morning.

At Narita Airport, train and bus services were suspended, preventing passengers from leaving, with about 7,000 people stuck at the airport at one point.

Meanwhile, the Chiba prefectural government office in the city of Chiba sheltered people unable to return home, housing up to around 1,800 people at its peak.

Upon receiving a disaster relief request from the prefecture, the Self-Defense Forces are assisting in transporting stranded commuters within the city of Chiba.