There's more to forecasting than little tricks about looking at the clouds and feeling how the wind blows. Modern forecasting involves technology, science and advanced math to accurately predict the weather.
Many people make weather forecasts, from local forecasters to national meteorologists.
The first step in weather forecasting is to get information about the weather, or weather data. Data is collected from the atmosphere from launching balloons twice a day all around the world. Weather balloons record data such as temperature, pressure, humidity, and wind speed at different heights in the atmosphere. Another useful tool for forecasters is satellite technology. Satellites allow meteorologists to see what the earth and clouds look like from space.