- H21Y-1304: A Multisensor Framework for Understanding Hybrid Flood Events from Hurricane Helene (2024)
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Board 1304‚ Hall EFG (Poster Hall)NOLA CC
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Alka Tiwari, The University of Texas at Austin (First Author, Presenting Author)
Dev Niyogi, University of Texas at Austin
In September 2024, Hurricane Helene brought heavy rainfall to the Southern Appalachian region of the United States. This storm was unusual because it did not behave like a typical hurricane. Instead, it interacted with another weather system and the mountainous terrain, creating what we call a “hybrid flood event.” These types of storms can lead to sudden and severe flooding, especially in areas that are already vulnerable.To better understand how much rain fell and where it caused the most problems, we combined information from several sources: satellites in space, radar systems, and weather stations on the ground. Each tool gave us a different perspective. Satellites helped track rainfall over large, remote areas. Radar offered detailed local patterns. Ground stations provided accurate measurements at specific points.
By comparing these different data sources, we learned where they agreed, where they didn’t, and how these differences can impact flood forecasts and emergency planning. Our findings are important for improving flood warnings and helping communities especially those in hilly or remote areas prepare for future storms. This study also shows how combining different kinds of technology can improve our understanding of complex weather events in a changing climate.
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