The basic idea of numerical weather prediction is to sample the state of the fluid at a given time and use the equations of fluid dynamics and thermodynamics to estimate the state of the fluid at some time in time. The main inputs from country-based weather services are surface observations from automated weather stations at ground level over land and from weather buoys at sea. The simplest method of forecasting the weather, persistence, relies upon today's conditions to forecast the conditions tomorrow. This method of forecasting strongly depends upon the presence of a stagnant weather pattern. It can be useful in both short range forecasts and long range forecasts. There are a lot of ways to predict the weather but you cannot predict the popularity of your website if you don’t know how. If you need some help buy targeted traffic for your website to help you reach your goal.