ROC Curve for QPF

This plot of ROC curves is for the 24-hour probabilistic QPF for the three different QPF thresholds used. The upper left corner is ideal since this represents a Probability of Detection (POD) of 1.00 and a Probability of False Detection (POFD) of 0.00. In this case the curves all reach toward the upper left which indicates good forecast discrimination skill.

Relative Operating Characteristic (ROC) Diagram for 24-hour Lead Time Precipitation Forecasts