The Japan Times, Sept. 15, 2013: Meteorological Agency projects storm will come ashore in Shizuoka but may hit Fukushima [...] In the 24 hours until Monday evening [...] 400 mm [15.75 inches of rain is expected] in Tohoku [...] Man-yi might also inundate Fukushima, where utility crews are struggling to contain highly radioactive water leaking from and flowing under the crippled Fukushima No. 1 nuclear plant and into the Pacific Ocean at an estimated rate of 300 tons a day. [...]
AFP, Sept. 15, 2013: Typhoon Man-yi advanced towards central Japan on Sunday, bringing heavy rains as officials warned of floods and strong winds [...] packing gusts up to 126 kilometres (78 miles) per hour [...] Man-yi might also hit Fukushima, where crews have struggled to contain a crippled nuclear plant that has contaminated groundwater with radioactive materials as it flows to the Pacific Ocean. [...] The weather agency issued warnings for flooding, heavy rain, mudslides and high ocean waves to areas along the Pacific coast.
UPDATE: Reports: Fears for Fukushima plant as typhoon now only a few hours away -- Officials warn of floods at site -- Storm gusting over 150 km/hr -- Workers frantically pumping up water -- Torrential rain to force more contamination into groundwater (MAP)