Swiss Model Simulations for Extreme Rainfall Events on the South Side of the Alps

MeteoSwiss participated in the project RAPHAEL by providing simulations of its limited-area numerical weather-prediction model, the Swiss Model. The Swiss Model data was used as input by hydrological models to simulate the runoff from a mountainous watershed. Two target watersheds were defined, one on each side of the alpine ridge: The Ticino watershed south of the Alps, and the Ammer watershed north of the Alps. Four events with heavy precipitation were defined for each of the two watersheds. Each event consisted of a few days with heavy precipitation and following high water levels in the target area.