Why are forecasters wrong so often?

As we've all seen time and time again, the weather forecasters seem to be wrong more than right when it comes to predictions of the weather more than a few hours out. A few researches decided to investigate what the possible reasons could be for this. They were able to find out that "land-use changes (i.e. an area that had been covered in forest is suddenly bare), topography, particles in the atmosphere and population density" were the main reasons for inaccuracy in estimates. By changing the environment around us, we are changing the way that nature is going to respond. To see more possible reasons, click here.