The storm cut power to more than 575,500 households in Tokyo Electric Power Co’s service area, and forced companies including Toyota Motor Corp , Nissan Motor and Mitsubishi Heavy Industries to close some plants, company spokesmen said.
Nissan Motor Co. said Wednesday it has halted operations at two of its domestic plants. Its engine plant in Yokohama and an auto assembly plant in Oppama, both in Kanagawa Prefecture, south of Tokyo, halted operations at 0500 GMT.
Nissan Motor Co. spokesman Chris Keeffe said workers at its Yokohama headquarters and nearby technical facilities were being told to go home early for safety reasons, and two plants were not operating.
Typhoon Roke was over Kofu city, 100 kilometers (64 miles) east of Tokyo at 5 p.m. local time. It was moving northeast at 50 kilometers per hour, the Japan Meteorological Agency said.
Also in the path of the storm is the Fukushima Dai-ichi nuclear power plant, which started spewing radiation after it was sent into meltdown by the tsunami.
“The biggest element of concern is the rise of (radioactive) water levels in turbine buildings,” Junichi Matsumoto, a Tokyo Electric official, told a news conference.