1. A computer display for displaying one or more graphical user interfaces generated by software instructions stored on a computer readable medium, the one or more graphical user interfaces comprising: one or more data association input regions for associating a stored event with stored time series data; one or more event defining input regions for defining properties of the associated event, the one or more event defining input regions including one or more selectable event types, wherein predefined selectable event types include at least one of a pulse type event, a level shift type event, a ramp type event, or a decay type event, wherein selecting an event type defines a relationship between the time series data and the associated event, and wherein a time series analysis program uses the time series data, the selected event type, and the associated event to generate a forecast using a time series model.