Safety measures at the devastated Fukushima nuclear power plant were tightened today as the strongest storm to hit Japan this year battered the southern islands of Kyushu and Shikoku. Typhoon Vongfong brought heavy rain to Tokyo and caused extensive travel disruption across Japan, where 820,000 people have been urged to leave their homes and seek shelter. Many trains in western cities were suspended, while more than 500 domestic flights were cancelled, the public broadcaster NHK said. At least one overseas flight was cancelled, according to an airline. Scroll down for videos Stormy: People struggle with their umbrellas as they fight through the strong wind  and rain delivered by Typhoon Vongfong in Himeji, Japan, which surpassed Genevieve for the most intense western Pacific typhoon of 2014, according to Japan's Meteorological Agency
@highlight
Vongfong, Japan's second typhoon in a week, is sweeping north towards the capital city of Tokyo
@highlight
Fukushima operators increase the water transfer and storage capacity to prevent radioactive overflow
@highlight
Baseball game in Osaka between the Orix Buffaloes and the Hokkaido Nippon-Ham Fighters also postponed
On Sunday, the wind weakened significantly from the previous day when it reached a peak of 146mph, which had made @placeholder into a 'super typhoon'.