Punxsutawney is built on the flood plain of Mahoning Creek. When water overflowed the flood wall, much of the town was inundated with water, resulting in considerable flood damage. The ABR values listed in Fig. 12 may have to be almost doubled to approximate the actual rainfall. The Mahoning Creek watershed.
Flash flooding can occur with high cell training speeds.
Rainfall can be spread over a very large area if many thunderstorms train at high speed over the same geographic area. The impact of the widespread heavy rainfall can result in both flash flooding and significant river flooding. Dissecting the Flash Flood Forecasting Problem . Detecting Flash Floods in Small Urban Watersheds. Preprints , 15th Conf.