Gridded daily precipitation observations over the contiguous USA are used to investigate the past observed changes in the frequency and magnitude of heavy precipitation, and to examine its seasonality. Analyses are based on the Climate Prediction Center (CPC) daily precipitation data from 1948 to 2012.

Mallakpour, I., and G. Villarini, Analysis of changes in the magnitude, frequency, and seasonality of heavy precipitation over the contiguous United States, Theoretical and Applied Climatology, 130, 345-363, 2017.