Powerful typhoon Hinnamnor may approach Japan's southwestern main island of Kyushu on Tuesday, the weather agency said, while warning of high waves, strong wind gusts and mudslides.
The season's 11th typhoon was moving slowly north over the East China Sea after passing between Ishigaki and Miyako islands in Okinawa Prefecture, the Japan Meteorological Agency said Sunday.
The agency said people in eastern and western Japan should also stay alert for heavy rain and related mudslides and floods. It upgraded the intensity rating of the typhoon from "strong" to "very strong" on Sunday afternoon.
According to a forecast for the 24 hours through 6 p.m. Monday, 180 millimeters of rain is expected in southern Kyushu and Shikoku, 150 mm in Okinawa, the Amami Islands and the Tokai region, and 120 mm in northern Kyushu.
As of 6 p.m. Sunday, Hinnamnor was located around 270 kilometers west-northwest of Kume Island, moving north at around 20 km per hour, the agency said.
It had an atmospheric pressure of 945 hectopascals at its center and was packing winds of up to 216 kph.
An evacuation advisory was issued on Saturday for 109,500 residents of Ishigaki, Miyako and other areas in Okinawa, as wind speeds of over 72 kph and rainfall of 64 mm in an hour were recorded in some areas in the southern island prefecture.