Typhoon Faxai has made landfall near the Japanese capital bringing heavy rain and winds of up 210 kilometres per hour.
Hundreds of thousands in the greater Tokyo area have been advised to evacuate as forecasters warned the rain and wind could break records.
The storm has affected transport with about 100 bullet trains and 100 flights cancelled in the region.
It comes after North Korea was hit by a separate typhoon on Sunday leaving five people dead.
According to Tokyo Electric Power company, about 290,000 households lost power as Faxai made landfall.
Authorities issued non‑compulsory evacuation warnings to more than 390,000 people in Kanagawa, Shizuoka and Tokyo prefectures.
Faxai is now travelling north at 25km/h and is expected to hit northeastern Japan.
Authorities in the country have warned of possible landslides and swollen rivers.
The storm comes as the country is preparing to host the Rugby World Cup.