Increments of rainfall during a storm event were treated as stochastic variates. Statistical distributions of accumulated rain were developed at 2-hour intervals. Three-parameter lognormal distributions were then fitted simultaneously to the twelve 2-hour histograms by making two of the three parameters continuous functions of elapsed time from beginning of rainfall. After evaluation of the parametric functions by nonlinear least squares, stochastic patterns of storm rainfall can be simulated.
Research Article|August 01 1975