A tropical disturbance began to organize just to the north of Taiwan while moving eastwards. The disturbance consolidated to a depression on August 24 and was named Tropical Storm Roger the next day. Roger then abruptly turned towards the northeast and accelerated. Roger reached peak intensity of 60 mph (97 km/h) just before landfall at Cape Muroto on Shikoku Island. 19 inches (480 mm) of rain fell across Honshū Island as Tropical Storm Roger moved through, the resulting landslides and floods killed three people.