Torrential rain and landslides hit Hiroshima, Japan. (Photo: Asahi Shimbun)

More than 50 people are missing. Rescue operations continued in disaster areas on Monday, as Japan's weather service warned the public of a continuing danger of landslides and flooding. Japanese Prime Minister Shinzo Abe warned of a “race against time” to rescue flood victims as many people Tweeted for help.  This is the worst natural disaster in Japan since 2014, when at least 74 people were killed in landslides triggered by heavy rain in Hiroshima.