QPF Verification: Challenges and Tools

QPF Verification: Challenges and Tools
This module looks at the common challenges and tools with respect to verification of quantitative precipitation forecasts (QPF). Through the use of rich illustrations, animations, and interactions, this module provides an introduction to a variety of methods and approaches for assessing the quality of QPFs. The module examines the need for, and the challenges of verifying precipitation forecasts. An overview is then presented of three verification programs available to most NWS forecast offices: the Hydrometeorological Prediction Center (HPC) verification, the National Precipitation Verification Unit (NPVU), and the Boise Verify Program (BOI Verify). For each of these programs, an introduction is provided covering the strengths and weaknesses as well as specific products available. Case examples are provided where appropriate to illustrate the application of the products in the field. Additional NWS verification tools under development are introduced: the Interactive Verification Program (IVP) and the Ensemble Verification System (EVS).