With wide-scale flooding and landslides battering the island of Kyushu in southern Japan and causing extensive damage over the past week, JBA Risk Management has produced a flood event footprint. This includes estimates for flood extents and depths for river flooding as well as surface water (pluvial) flooding and covers affected areas within Kagishima, Miyazki, Kumamoto and Ishikawa prefectures.
In the island of Kyushu, the wide-scale reach of the heavy rain is said to have broken numerous meteorological records across the region and caused widespread disruption to over 1.1m residents in the affected areas.
By 2019, over 925,435 residents in Kagoshima prefecture and 27,227 in Miyazaki prefecture were put under evacuation orders due to the potential threat from flash flooding, landslides and heavy rain according to Japan’s Fire and Disaster Management Agency.
The heavy rain also affected the transport system within the region and sections of the high-speed Kyushu Shinkansen bullet train line were disrupted for several hours.
In the coming days, further heavy rain is expected along with strong winds and thunderstorms which signals continued flood risk in the island.