Typhoon Mindulle, traveling north over waters far south of Japan, has reached the highest level on the intensity scale.
The Japan Meteorological Agency says Mindulle developed into a "violent" typhoon on Sunday.
The typhoon was slowly moving north over waters near Japan's southernmost island of Okinotorishima as of 3 a.m. on Monday.
It has an atmospheric pressure of 920 hectopascals with maximum wind speeds of 198 kilometers per hour at its center, and gusts reaching up to 270 kilometers per hour.
The Daito Islands in Okinawa Prefecture, southwestern Japan, will experience rough waves from Tuesday.
Waters around Amami-Oshima Island in Kagoshima Prefecture and the Ogasawara Islands will become rough with waves as high as 6 to 8 meters from Wednesday onwards.
Mindulle is predicted to veer northeast while maintaining its intensity. The typhoon is expected to come closest to the Izu Islands just south of Honshu on Friday.
The typhoon may bring rain and winds to the Pacific shores of eastern Japan from Thursday through Friday. Weather officials are urging people to keep updated on Mindulle.