In meteorology, past weather events can be a great forecasting tool if a weather set-up looks similar to an event that has occurred in the past. The experience allows a meteorologist to determine whether computer forecast modeling has a chance to verify or not and in some cases it becomes obvious that the models have it all wrong. This is useful information that can be used to make better predictions and in some cases it enables the forecaster a chance to predict an exceptional event that is missed by some of the most seasoned forecasters.