Weather Forecast
Weather forecasting is the prediction of what the atmosphere will be like in a particular place by using technology and scientific knowledge to make weather observations. In other words, it's a way of predicting things like cloud cover, rain, snow, wind speed, and temperature before they happen.
Aviation Weather Forecast
A forecast of weather elements of particular interest to aviation. These elements include the ceiling, visibility, upper winds, icing, turbulence, and types of precipitation and/or storms. Aviation weather forecasts can be subdivided into four basic categories: area forecasts, terminal forecasts, route forecasts, and flight forecasts.