The World Weather Watch was launched in 1963. Through this program, weather and environmental conditions are monitored constantly. Information is collected, analyzed, and distributed on a world scale. This series of stamps is based on images taken by various satellites surveying our world. They were adapted as stamps by Rocco J. Callari and Robert Steen of the U.S. The 36¢ stamp shows a picture of typhoon “Abby” as it approached China. The picture was taken at midnight on September 17, 1986, from a satellite located at a height of 36,000 kilometers above the Equator. The s9.50 stamp shows a short-range forecast of precipitation in the Tokyo area of Japan. Heavy rainfalls may cause landslides and severe floods in many cities of Japan. As a measure of security, these hourly forecasts are passed on to disaster-prevention authorities and the mass media. The World Weather Watch is one of the many programs of the World Meteorological Organization.