Abstract
This paper describes a probability model of heavy storm patterns with multi-local peak intensities. The definition of a storm cluster and a storm part leads that their occurrences follow Poisson and logarithmic series probability distributions, respectively. Using combined Freund's bivariate probability distribution functions gives the joint probability distribution of depth, duration and local peak for a storm part. The joint probability distribution function of total duration, local depths and local peak intensities for a single storm cluster with multi-storm parts is derived from those of storm parts.