Throughout the afternoon of September 18, Miyazaki saw over 15 inches of rain (381 mm) fall, where the JMA noted it was "raining like never before". Power lines were downed across affected areas, and at least 190,000 had experienced power outages as Nanmadol passed. In Kagoshima, over 8,000 fled their homes with another 12,000 in evacuation shelters. Prime Minister Fumio Kishida mobilized police, firefighters, self-defense forces and another authorities in affected regions. Several rivers in four prefectures, Kagoshima, Oita, Miyazaki and Kumamoto, went above flood risk levels. 100 dams were pre-discharged to prevent flooding, a higher number than the 76 discharged for Typhoon Haishen. From September 15 to 19, of rainfall fell in Minamigo, and in Morozuka Village, and in Tojo City.
