Severe Tropical Storm Etau caused extensive and destructive floods across eastern Japan during early September 2015. Originating from a tropical disturbance near Guam on September 2, Etau was first classified a tropical depression on September 5. Tracking generally north, the cyclone gradually intensified and reached its peak strength with winds of 95 km/h (60 mph) on September 8. The following day, Etau made landfall in Honshu, Japan. It subsequently transitioned into an extratropical cyclone later that day over the Sea of Japan.