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Weather Underground is a commercial weather service, which provides real-time weather information via the Internet. Weather Underground provides weather reports for most major cities across the world on its website, as well as local weather reports for newspapers and websites. Most of its United States information comes from the National Weather Service (NWS), as federal law specifies that information from that agency falls within the public domain. The website is available in many languages, and customers can access an ad-free version of the site with additional features for an annual fee. The Weather Company, owners of The Weather Channel, has owned Weather Underground since 2012. IBM has agreed to buy the Weather Underground.〔== History == Weather Underground (WU) is based in San Francisco, California and was founded in 1995 as an offshoot of the University of Michigan's Internet weather database. The name is a reference to the 1960s militant radical student group the Weather Underground, which also originated at the University of Michigan. Jeff Masters, a doctoral candidate in meteorology at the University of Michigan working under the direction of Professor Perry Samson, wrote a menu-based Telnet interface in 1991 that displayed real-time weather information around the world. In 1993, they recruited Alan Steremberg and initiated a project to bring Internet weather into K-12 classrooms. WU's president Alan Steremberg wrote "Blue Skies" for the project, a graphical Mac gopher client, which won several awards. When the Mosaic Web browser appeared, this provided a natural transition from "Blue Skies" to the Web. In 1995 Weather Underground, Inc. became a commercial entity separate from the university.〔Weather Underground, Inc. (The First Internet Weather Service. ) Retrieved on 2008-04-05.〕 It has grown to provide weather for print sources, in addition to its online presence. In 2005, Weather Underground became the weather provider for the Associated Press; WU also provides weather reports for some newspapers (including the San Francisco Chronicle) and the Google search engine. Alan Steremberg, Weather Underground's president, also worked on the early development of Google's search engine with Larry Page and Sergey Brin. In October 2008, Jeff Masters reported that the site was #2 in Internet Weather for 2008.〔Jeff Master's WunderBlog, 10-27-2008 (Heavy Internet Weather ) Retrieved on 2008-10-27.〕 In February 2010, FullScreenWeather.com was launched, a full screen weather Web tool with integrated mapping and mobile device use in mind. On July 2, 2012, The Weather Channel announced that it would acquire Weather Underground, which will become operated as part of The Weather Channel Companies, LLC, which was later renamed "The Weather Company". The Weather Underground website continues to operate as a separate entity from The Weather Channel's primary site, weather.com, with its existing staff retained. Third-party web analytics providers Alexa and SimilarWeb rate the site as the 117th and 98th most visited website in the United States respectively, as of July 2015.〔(【引用サイトリンク】 title=wunderground.com Site Overview )〕〔(【引用サイトリンク】 title=Wunderground.com Analytics )〕 SimilarWeb rates the site as the second most visited weather website globally, attracting more than 47 million visitors per month.〔〔(【引用サイトリンク】 title=Top 50 sites in the world for News And Media > Weather )〕 The Weather Company also uses the site's San Francisco headquarters as a regional office.〔(Weather Channel buys Weather Underground, brand stays ). ''PaidContent.org''. Retrieved July 4, 2012.〕〔(Dr. Jeff Masters' WunderBlog: Wunderground.com sold to The Weather Channel Companies ), ''Weather Underground'', July 2, 2012.〕 On October 28, 2015, Jeff Masters noted that IBM had officially announced an agreement to acquire The Weather Company’s business-to-business, mobile and cloud-based web properties, including Weather Underground, WSI, weather.com, and also the Weather Company brand. Meanwhile, the television service (The Weather Channel) remains a separate entity. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Weather Underground (weather service)」の詳細全文を読む スポンサード リンク
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