Typhoon Hagibis, one of the most powerful storms of the year, is on track to hit wide areas of eastern Japan including Tokyo on Saturday through Sunday.
Japan's Meteorological Agency has classed Hagibis as a very strong typhoon, its second highest category. It is also of a massive size and will likely bring violent wind and sustained heavy rains to wide areas.
The agency says Hagibis is moving north over the Pacific, west of the Ogasawara Islands to the south of Japan's main island of Honshu.
Wind gusts may reach more than 108 kilometers per hour in the Kansai, Shikoku, and Tokai regions as well as the Ogasawara and Izu islands.
Storm surges are expected along the coast of eastern Japan from Saturday through Sunday.
Waves may reach 10 meters high off the Ogasawara and Izu islands, 9 meters off Kansai, and 8 meters off Tokai and Shikoku.
Torrential rains are forecast on the Pacific side of eastern and western Japan from Friday through Saturday, threatening floods and landslides.
Authorities have warned that populations in the track of the storm need to prepare ahead of the weekend.