The Japan Meteorological Agency (JMA) issued a Level 5 landslide warning, the highest possible, for Yakushima Island in Kagoshima prefecture on September 5, 2026, due to heavy rain from Typhoon Krovanh combined with a weather front [1, 2, 3]. The warning urges maximum vigilance especially during the morning as rainfall intensifies.
The JMA warned there is a very high possibility that some kind of disaster has already occurred in designated landslide hazard zones on the island. “There is a very high possibility that some kind of disaster has already occurred in areas designated as landslide hazard zones,” the agency said [3].
Rainfall is expected to reach up to 200 millimeters across southern Kyushu, including Kagoshima, over the 24-hour period ending at 6 a.m. Sunday, September 6 [1, 2]. Low-lying areas in western Japan may face flooding, and rivers could swell or overflow amid the combined effects of the typhoon and the weather front [1, 2].
The JMA cautioned that waiting for a special warning before evacuating could be too late. It urged residents to take immediate action, relocate away from cliffs and streams if evacuation centers are unreachable, and to follow official instructions. “To protect your own life and the lives of your loved ones, do not wait,” officials said [3].
The warning remains in effect through the heavy rain period expected to end by early Sunday morning, September 6 [1, 2]. Authorities continue to monitor the situation closely as the typhoon impacts Kagoshima and surrounding areas.
