NH1 The predictability of meteorological and hydrological hazards .2 Uncertainty assessment in meteorology and its effect on early warning cover Convener: Tibaldi, S. Co-Convener(s): Castelli, F. Monday, 19 April 1999 Lecture Room: Prins Willem-Alexander Foyer 1 Chairperson: N.N. 11:00 BONGIOANNINI CERLINI, P.; TODINI, E.; TIBALDI, S. Evaluation and assessment of flood forecasting uncertainty 11:20 OBLED, CH.; DATIN, R.; ZIN, I. Objective use of probabilistic rainfall forecast into a flash flood forecasting system 11:40 MARSIGLI, C.; BUIZZA, R.; MOLTENI, F.; MONTANI, A.; NEROZZI, F.; PACCAGNELLA, T.; PATRUNO, P. High-resolution ensemble prediction with a Limited Area Model 12:00 ARENA, N.; CRESTA, R.; FICCA, G.; SALLINO, S.; MINGUZZI, E.; PASI, F.; SACCHETTI, D.; TESCARO, N.; TROVATORE, E. An example of operational procedure for meteorological warnings 12:20 LUNCH & POSTERS Chairperson: N.N. 14:30 MENEGUZZO, F.; GOZZINI, B.; MESSERI, G.; ROSSI, M.; GRIFONI, D. Automatic short term thunderstorm occurrence and type prediction at the regional scale (Poster) 14:40 BONI, G.; CAVALLO, A.; FERRAIS, L.; GOLLO, P.; VERSACE, C. Uncertainty of extreme events prediction: study cases in the Liguria region 15:00 CACCIAMANI, C.; CESARI, D.; GRAZZINI, F.; PACCAGNELLA, T.; PANTONE, M. Use of surface observations in the initialisation of a limited area atmospheric model 15:20 MARCHESI, S.; MORELLI, S.; STORTINI, M. The Vaison-la-Romaine intense precipitation event: mesoscale simulations (Poster) 15:30 VAN GELDER, P.H.A.J.M.; VAN NOORTWIJK, J.M. Probablistic-based selection of a river discharge frequency curve (Poster) 15:40 END OF SUB-SESSION