Weather forecasting is highly technical and involves numerous steps. Collecting, transmitting and compiling weather data of the entire world are the essential steps. For the collection of weather data on a global scale, there is a vast network of weather stations of various categories located on the land as well as seas. Weather data are shared intentionally through World Weather Watches. For collecting upper air data there are 4 Polar orbits, 5 geostationary orbits, and about 525 weather-satellite. The analysis all the data and plot them in charts. After carefully examining these charts, a pictorial view of the weather system as they move across any country is provided.