Plots of precipitation forecasts and analyses can be found here. Regional precipitation verification scores are also available Similar scores from other operational EMC models can be found here. Hourly analyses of observed precipitation from gage and radar can be obtained here. An explanation of how the precipitation verification is done can be found here. The forecasts are verified over the lower 48 states only by comparison to an analysis on a Lambert Conformal grid.
Regional scores are now available on both grids as well.
The analysis is a simple average of all gage reports within each grid box. Grid boxes containing no observations for a given day are not included in the verification.