Hydrometeorologic extremes (e.g., droughts, floods, extreme precipitation and heatwaves) can have negative ecologic, economic, and societal impacts. The development of suitable preparation and mitigation strategies to counteract these consequences requires local and spatial estimates of the frequency, magnitude, and potential impact of such extremes under current and future conditions. However, hazard and risk assessment through statistical, hydrological, and impact modeling is challenging for several reasons, including inadequate data, the multivariate and compounding nature of extremes, and non-stationarities introduced by changes in climate, land use, or regulation.We invite contributions tackling these and other challenges related to local and regional hydrometeorological hazard and risk assessments. Potential submissions include but are not limited to: stochastic simulations; novel datasets for different components of risk; predictions in ungauged basins; multivariate frequency analyses; assessment of regional and spatial dependencies; understanding of the physical processes responsible for extremes and approaches to quantify their future changes.

• A - Atmospheric Sciences
• NH - Natural Hazards