Damage in Okinawa, the site of Saomai's first landfall, was considerable but not unprecedented. On September 10, the provincial government established a disaster warning headquarters on Daito Island to more efficiently deal with the typhoon's effects. Rainfall peaked on Mount Yonaha, where a station recorded 537 mm (21.14 in) of rain. During the storm, 31 roads sustained damage and 26 landslides occurred. Damage in Okinawa Prefecture reached JP¥636 million (US$6 million). Overall, Saomai caused the destruction of 609 homes and the inundation of 70,017 others in Japan. Damage costs in the country totaled JP¥24.8 billion (US$223 million). Eleven people were killed and 103 others suffered injury. At the height of the storm, over 17,000 people had been displaced in emergency shelters.