Keywords: Social acceptability, Information overload, Digital alarmism, Scientific uncertainty, Climate change
Extreme weather events are getting massive media coverage as sign of climate change. Scientific research, for elaborating dynamic models in connection with anthropic activity, requires a closer flow of communication with citizens. In this contribution, the results of a research on the use of weather forecasting in Lombardy are discussed, collecting examples of bottom-up practices of communication and participation in hydrological risk. In particular, it emerges a widespread information overload of public weather bulletins that tends in the medium-long term to normalize the extraordinary event and atrophy the ability to mobilize resources to cope with the alarm itself.