Typhoon No. 6, named Kura, caused the Kozagawa River to overflow in Wakayama Prefecture, prompting a temporary Level 5 flood special warning this Wednesday [1].

The incident highlights the extreme vulnerability of Japan's river systems during typhoon season, where rapid water rises can trigger the highest possible emergency alerts. These warnings are designed to prompt immediate evacuation to save lives in high-risk zones.

Local authorities issued the Level 5 warning around 5:30 a.m. [1]. The surge of water caused the Kozagawa River to overflow, which subsequently submerged a prefectural road adjacent to the river [1].

In Kozagawa town, officials reported that four houses suffered floor-under-water damage [1]. Despite the severity of the overflow and the high-level alert, no human casualties have been reported in Wakayama Prefecture [1].

A reporter for TBS NEWS DIG, who was on the scene, said that the Level 5 flood special warning had been in effect for the Kozagawa River.

Following the peak of the storm's impact, the emergency status changed. The reporter said that the warnings and advisories have since been lifted [1].

Emergency crews continue to monitor the area for secondary effects of the heavy rainfall. The rapid transition from a Level 5 alert to the lifting of all advisories reflects the volatile nature of typhoon-driven flooding in the region.

The Kozagawa River overflowed, submerging a prefectural road

The issuance of a Level 5 warning, the most severe tier in Japan's disaster alert system, indicates a situation where a river's levee has collapsed or is expected to fail. While the lack of casualties suggests effective early warning and evacuation protocols, the flooding of homes and infrastructure underscores the ongoing challenge of managing extreme precipitation events caused by intensifying typhoon patterns.