Estimations of Probable Maximum Precipitation (PMP) for the Evinos catchment in Greece using a Storm Model approach

Abstract

AbstractA Storm Model is used to estimate Probable Maximum Precipitation (PMP) for the Evinos catchment in Greece. The model determines the maximum dew‐point temperature from the effects of solar heating, orographic lifting and convergence, in terms of the change in temperature of a rising parcel of air. From this the model estimates the maximum precipitable water over the catchment and together with storm efficiency calculates PMP. For the Evinos catchment the 12‐hour PMP is estimated to be 478 mm and the 24‐hour PMP is 494 mm, occurring in late July. Further, the total water from a maximum rainfall event taken together with a rare snowmelt is unlikely to exceed the amount of water produced by a maximum rainfall in late July; hence, the latter is taken as the catchment PMP.