High-resolution impact-based early warning system for riverine flooding.

Najafi, Husain; Shrestha, Pallav Kumar; Rakovec, Oldrich; Apel, Heiko; Vorogushyn, Sergiy; Kumar, Rohini; Thober, Stephan; Merz, Bruno et al. · Nat Commun · 2024

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Abstract

Despite considerable advances in flood forecasting during recent decades, state-of-the-art, operational flood early warning systems (FEWS) need to be equipped with near-real-time inundation and impact forecasts and their associated uncertainties. High-resolution, impact-based flood forecasts provide insightful information for better-informed decisions and tailored emergency actions. Valuable information can now be provided to local authorities for risk-based decision-making by utilising high-resolution lead-time maps and potential impacts to buildings and infrastructures. Here, we demonstrate a comprehensive floodplain inundation hindcast of the 2021 European Summer Flood illustrating these possibilities for better disaster preparedness, offering a 17-hour lead time for informed and advisable actions.