http://google.org/publicalerts/?hl=en
Public Alerts for Google Search, Google Now and Google Maps available in Japan
googleblog.blogspot.jp: Wednesday, March 06, 2013
...We’re launching Google Public Alerts today in Japan—the first international expansion of a service we debuted last year in the United States. Google Public Alerts is a platform designed to provide accurate and relevant emergency alerts when and where you’re searching for them online.
Relevant earthquake and tsunami warnings for Japan will now appear on Google Search, Google Maps and Google Now when you search online during a time of crisis. If a major earthquake alert is issued in Kanagawa Prefecture, for example, the alert information will appear on your desktop and mobile screens when you search for relevant information on Google Search and Google Maps.
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