A flash flood is a sudden and intense flood that occurs within six hours of heavy rainfall or other events, like a dam break. These floods can happen quickly, often with little warning, and can be extremely dangerous. They can sweep away cars, damage homes, and pose serious risks to anyone caught in the area. Flash floods are most common in areas with steep terrain, where water can rush down hillsides rapidly. They can also occur in urban areas where the ground is covered by concrete, preventing water from soaking in. Being aware of weather alerts and knowing how to respond can help keep you safe during a flash flood.