Significant rainfall threatens potential flooding under 148 municipalities' underpasses across Japan. Japanese authorities are on high alert due to these weather conditions, with safety measures being activated on a wide scale. Floods could disrupt transport communications and pose a danger to residents. The situation is being closely monitored to swiftly perform evacuation procedures if required.

In Japan, efficient flood management and preparedness are prioritized, as the country often deals with extreme weather, including typhoons and heavy rainfall. Residents are well-educated on safety guidelines, and city infrastructures are usually designed to cope with such occurrences. However, excessive rainfall that results in underpass flooding can disrupt everyday life by impacting transportation networks and posing a risk to pedestrian safety.

In comparison to the US or EU, flooding and typhoon preparedness in Japan tends to be more systematized due to its higher frequency of such incidents. Proactive flood management, including swift evacuations and safety measures, is more common in Japan, whereas in the US and EU, a higher emphasis is placed on recovery efforts after the incident occurs.