Flash flooding remains one of the most dangerous and difficult-to-predict natural hazards, driven by short lead times, strong spatial heterogeneity, and complex interactions between meteorological forcing, hydrologic response, and human decision-making. Despite advances in precipitation estimation, numerical weather prediction, and hydrologic modeling, persistent gaps remain in translating flash flood forecast information into effective warnings and timely protective actions. This session invites contributions that examine any component of the flash flood forecasting chain—from precipitation and hydrologic prediction to interpretation, communication, and decision-making. We particularly encourage interdisciplinary perspectives that connect advances in atmospheric science, hydrology, social science, and operations.

Topics of interest include:

• Advances and limitations in precipitation estimation and prediction (QPE/QPF)
• Hydrologic modeling approaches for flash flooding
• Uncertainty characterization and probabilistic forecasting
• Lead time, latency, and operational constraints
• Decision-making under uncertainty and risk perception
• Communication, message design, and interpretation challenges
• Case studies of extreme events

• NH - Natural Hazards
• SY - Science and Society