Weather forecasting estimates future meteorological conditions from observations and physical models. Numerical models use an approximate initial condition and equations of fluid mechanics to simulate future conditions; forecasters also compare model outputs and apply experience and research.[ref]
https://www.weather.gov/rah/virtualtourforecast. National Weather Service, The forecast process
The forecast horizon describes how far ahead a prediction remains useful at a specified accuracy; sensitive dependence on initial conditions can limit detailed predictions under deterministic evolution. Articles by others on the same topic
Weather forecasting is the practice of predicting atmospheric conditions at a specific location over a set time period. This involves analyzing various meteorological data, including temperature, humidity, precipitation, wind speed and direction, atmospheric pressure, and cloud cover, among other factors. Forecasting utilizes a combination of observational data from weather stations, satellites, and radars, as well as computer models that simulate the atmosphere's behavior.