Weather satellite of rotation and its elliptical orbit kept it from collecting a notable amount of useful data. The Explorer VI and VII satellites also contained weather-related experiments. The first weather satellite to be considered a success was TIROS-1, launched by NASA on April 1, 1960. TIROS operated for 78 days and proved to be much more successful than Vanguard 2. TIROS paved the way for the Nimbus program, whose technology and findings are the heritage of most of the Earth-observing satellites NASA and NOAA have launched since then. Beginning with the Nimbus 3 satellite in 1969, temperature information through the tropospheric
Weather Underground of Hong Kong Weather Underground of Hong Kong Weather Underground of Hong Kong (Chinese: 香港地下天文台, pinyin: xiānggǎng dìxià tiānwéntái) is a non-profit website established in 1995 and directed by Mr. Fong Chi Kong Clarence. The website provides a wide range of information related to weather and climate. Air temperature, relative humidity, barometric pressure, rain and wind chill can be found on the site. Radar and satellite views are also included in order to provide more comprehensive weather data to users. Information about local weather comes mainly from the Hong Kong Observatory (HKO), which collects data from foreign weather organizations, for example, satellite data